simpson strong-tie strongwall catalog c-l-sw14

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  • 8/9/2019 Simpson Strong-Tie Strongwall Catalog C-L-SW14

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    STRONG-WALLShearwalls

    C-L-SW14

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    and Product InnovationDesign Flexibility 

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    Every jobsite presents its own variety of parameters and

    requirements. Strong-Wall® shearwalls from Simpson Strong-Ti

    provide a systems-oriented approach to building design that

    provides enhanced design flexibility and greater lateral-force

    resistance. With unsurpassed testing capabilities and field

    experience, our factory-built shearwalls maintain the industry’s

    highest quality standards and meet code requirements for ICC

    City of Los Angeles and the State of Florida.

    Table of ContentsIntroduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

    What’s New. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

    Important Information & General Notes. . . . . . . . . . . . . . . . . 6

    Steel Strong-Wall®  9

    Standard Application on Concrete Foundations . . . . . . . . . 10

     Anchor Tension Equations. . . . . . . . . . . . . . . . . . . . . . . . . . 15

    Garage Portal Systems on Concrete Foundations . . . . . . . 16

     Alternate Garage Front Options. . . . . . . . . . . . . . . . . . . . . . 17

    First-Story Wood Floor Systems . . . . . . . . . . . . . . . . . . . . . 18

    Balloon Framing on Concrete Foundations . . . . . . . . . . . . . 20

    Cumulative Overturning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

     Two-Story Stacked on Concrete Foundations. . . . . . . . . . . 25

    Cold-Formed Steel on Concrete Foundations. . . . . . . . . . . 28

     Anchorage Solutions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Anchor Reinforcement Solutions on Grade Beams. . . . . . . 34

     Anchor Bolt Templates . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

    Strong-Wall® SB 36

    Strong-Wall® SB Shearwal l Applications . . . . . . . . . . . . . . . 37

    Standard and Balloon Framing on Concrete Foundations. . 38

    Garage Portal Systems on Concrete Foundations . . . . . . . 42

     Two-Story Stacked on Concrete Foundations. . . . . . . . . . . 46

     Anchorage Solutions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

     Anchor Bolt Templates . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

    Wood Strong-Wall®  56

    Standard Wall on Concrete Foundations.. . . . . . . . . . . . . . 57

    Garage Portal Systems on Concrete Foundations . . . . . . . 59

    Raised-Floor Walls (One- and Two-Story) . . . . . . . . . . . . . . 62

     Allowable Vertical and Out-of-Plane Loads . . . . . . . . . . . . . 65

     Anchorage Solutions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

    SSTB® Anchor Bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

     Anchor Bolt Templates . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

     Anchorage & Installation Details 69

    Steel Strong-Wall  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

    Strong-Wall SB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

    Wood Strong-Wall. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

    Steel Strong-Wall®

    Wood Strong-Wall®

     Anchorage &Installation Details

    Product Identification KeyProducts are divided into four

    general categories, identified by

    tabs along the page’s outer edge.

    Strong-Wall® SB

    9—

    56—

    69—

    36—

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    Strong-Wall ® Shearwalls

    Introduction

    Simpson Strong-Tie

    ®

     Quality PolicyWe help people build safer structures economically. We do

    this by designing, engineering and manufacturing “No Equal”

    structural connectors and other related products that meet or

    exceed our customers’ needs and expectations. Everyone is

    responsible for product quality and is committed to ensuring the

    effectiveness of the Quality Management System.

    Getting Fast Technical SupportWhen you call for engineering technical support, we can

    help you quickly if you have the following information at

    hand. This will help us to serve you promptly and efficiently.

     • Which Simpson Strong-Tie catalog are you using?

    (See the front cover for the catalog number)

     • Which Simpson Strong-Tie product are you using?

     • What is your application?

     • What is your load requirement?

     • What is your design code and building jurisdiction?

     • Is your stucture residential or commercial?

    Maple Ridge, BC

    Kent, WA 

    Stockton, CA Pleasanton, CA 

    Eagan, MN

     Addison, ILColumbus, OH

    Kansas City, KS

    Gallatin, TN

    Naples, FL

    Jacksonville, FL

    High Point, NC

    Baltimore, MDJessup, MD

    Enfield, CT

    Riverside, CA 

    Chandler, AZ

    McKinney, TX

    Canada Northwest Northeast Southwest Southeast

    Brampton, ON

    Karen Colonias

    Chief Executive Officer

    We Are ISO 9001-2008 Registered

    Simpson Strong-Tie is an ISO 9001-2008 registered

    company. ISO 9001-2008 is an internationally-

    recognized quality assurance system which lets

    our domestic and international customers know

    that they can count on the consistent quality of

    Simpson Strong-Tie® products and services.

    (800) 999-5099 | www.strongtie.com

     All rights reserved. This catalog may not be reproduced in whole or in part without the prior written approval of Simpson Strong-Tie Company Inc.

    For more than 50 years, Simpson Strong-Tie has focused on creating

    structural products that help people build safer and stronger

    homes and buildings. A leader in structural systems research and

    technology, Simpson Strong-Tie is one of the largest suppliers of

    structural building products in the world. The Simpson Strong-Tie

    commitment to product development, engineering, testing and

    training is evident in the consistent quality and delivery of its

    products and services. Simpson Strong-Tie® product lines include: • Structural connectors for wood and cold-formed-steelconstruction

     • Strong-Wall® prefabricated shearwalls

     • Strong Frame® moment frames

     • Rod systems for multi-story buildings

     • Fastening systems including Quik Drive® auto-feed screw driving systems

     • Simpson Strong-Tie® anchors and fastenersfor concrete and masonry

    The Simpson Strong -Tie Company Inc. “No Equal”

    pledge includes:

     • Quality products value-engineered for the lowest installed cost

    at the highest rated performance levels • Most thoroughly tested and evaluated products in the industry

     • Strategically located manufacturing and warehouse facilities

     • National code agency listings

     • Largest number of patented connectors in the industry

     • European locations with an international sales team

     • In-house R&D and tool and die professionals

     • In-house product testing and quality control engineers

     • Member of AITC, ASTM, ASCE, AWPA, ACI, AISC, CSI, ICFA,NBMDA, NLBMDA, SETMA, STAFDA, SREA, NFBA, WTCAand local engineering groups.

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    Simpson Strong-Tie® Strong-Wall® SB Shearwall The Simpson Strong-Tie® Strong-Wall® SB shearwall is a specially

    designed, prefabricated, engineered-wood panel that helps structures

    resist lateral forces such as those created by earthquakes and high

    winds. The Strong-Wall SB shearwall has been evaluated to the

    2012 IRC/IBC (ICC-ES ESR 2652) and conforms to the latest ICC-ES

     Acceptance Criteria (AC130). The SWSB shearwall is adjustable and m

    be field trimmed and drilled. Strong-Wall SB shearwalls are suitable

    residential, multi-family, and light-frame commercial construction a

    work in tall wall and multi-story applications.

    Strong-Wall Shearwalls Code ReportsSimpson Strong-Tie received code listing under the 2012 IRC/IBC for

    Steel Strong-Wall® shearwalls (ICC-ES ESR-1679). Steel Strong-Wall

    shearwalls conform to the latest ICC-ES Acceptance Criteria (AC322),

    and they have the most code-listed prefabricated shearwall applications

    in the industry. Code-listed applications include installation on concrete

    foundations, first-story wood-floor and two-story stacked-wall system

    balloon framing and cold-formed steel applications.

    Simpson Strong-Tie Wood Strong-Wall shearwalls are also code-list

    under the 2012 IRC/IBC (ICC-ES ESR-1267) and conform to the late

    ICC-ES Acceptance Criteria (AC130).

    Complete Anchorage Design SolutionsSimpson Strong-Tie Strong-Wall shearwalls feature the most complete

    anchorage designs for shear and tension forces of any manufacturer. The solutions featured in this catalog, including the code-listed SSWAB,

    SWSB-AB and PAB anchor bolts, have been value-engineered and

    calculated to conform to the 2012 IBC and ACI 318-11 Appendix D. In

    addition to the calculation based anchorage solutions, Simpson Strong-Tie

    offers proprietary SSTB® anchorage solutions for the Wood Strong-Wall

    shearwalls for all common footing types. These anchor bolts are also

    code listed to the 2012 IRC/IBC (ICC-ES ESR-2611) and conform to the

    latest ICC-ES Acceptance Criteria (AC399).

    Simpson Strong-Tie now provides grade beam anchorage solutions for

    the Steel Strong-Wall shearwall, which have been calculated to conform

    to ACI 318-11, Appendix D for seismic and wind uplift loads and ha

    been tested at Simpson Strong-Tie’s state-of-the-art Tyrell Gilb ResearLaboratory to validate performance. Anchor reinforcement details a

    tabulated anchorage solutions are provided in addition to commenta

    on general grade beam design guidelines as they pertain to foundati

    support for Steel Strong-Wall.

     The redesigned Strong-Wall SB shearwal l anchorage now features

    reusable template to properly locate anchor bolts similar to the Wo

    and Steel Strong-Walls. The standard or high-strength anchor bo

    now come fully assembled with all required nuts fixed in place there

    providing installers with a complete anchorage solution.

    Coming Soon:

    New Strong-WallSelector Software

     The latest vers ion of the Simpson Strong-Tie Strong-Wall Selector

     Application provides a convenient, Web-based experience that eliminates

    the need to download software. The selector has been updated to the

    2012 International Building Code (IBC) and provides complete Strong-Wall

    and anchorage solutions utilizing the Strong-Wall SB, Wood Strong-Wall

    and Steel Strong-Wall shearwalls.

    Coming Soon:

    New PrescriptiveBracing SelectorIn an effort to simpli f y the complex prescript ive wal l-bracing

    requirements in the code, Simpson Strong-Tie is soon releasing the

    Strong-Wall® Shearwall Prescriptive Bracing Selector. The Strong-Wall® 

    Prescriptive Bracing Selector software provides optimized braced wall

    panel and anchorage solutions along with comprehensive installation

    information based on wall-bracing-length requirements and project

    information. For more information about this and other related shearwall-

    related software, such as the Wall-Bracing-Length Calculator, visit

    www.strongtie.com/software.

    Strong-Wall ® Shearwalls

    What’s New

    Strong-Wall® SB

    U.S. Patent

    7,712,282

    Steel

    Strong-Wall®

    U.S. Patent

    8,281,551

    8,689,518

    Canadian Patent

    2,489,845

    Wood

    Strong-Wall®

    U.S. Patents

    5,706,626

    6,006,487

    6,109,850

    6,327,831

    6,643,986

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    6

    Strong-Wall ® Shearwalls

    Important Information & General Notes

    WarningSimpson Strong-Tie Company Inc. structural connectors, anchors, and

    other products are designed and tested to provide specified design loads.

     To obtain optimal performance from Simpson Strong-Tie Company Inc.

    products and achieve maximum allowable design load, the products must

    be properly installed and used in accordance with the installation instruc-

    tions and design limits provided by Simpson Strong-Tie Company Inc. To

    ensure proper installation and use, designers and installers must carefully

    read the following General Notes, General Instructions For The Installer and

    General Instructions For The Designer, as well as consult the applicable

    catalog pages for specific product installation instructions and notes.

    Proper product installation requires careful attention to all notes and

    instructions, including these basic rules:

    1. Be familiar with the application and correct use of the product.

    2. Follow all installation instructions provided in the applicable catalog,

    website, Installer’s Pocket Guide or any other Simpson Strong-Tie

    publications.

    3. Install all required fasteners per installation instructions provided

    by Simpson Strong-Tie Company Inc.: a) use proper fastener type; b)

    use proper fastener quantity; c) fill all fastener holes; d) do not overdrive

    or underdrive nails, including when using gun nailers; and e) ensure

    screws are completely driven.4. Only bend products that are specifically designed to be bent. For

    those products that require bending, do not bend more than once.

    In addition to following the basic rules provided above as well as all notes,

    warnings and instructions provided in the catalog, installers, designers,

    engineers and consumers should consult the Simpson Strong-Tie

    Company Inc. website at www.strongtie.com to obtain additional design

    and installation information, including:

     • Instructional builder/contractor training kits containing an instructional

    video, an instructor guide and a student guide in both English and Spanish;

     • Information on workshops Simpson Strong-Tie conducts at various

    training centers throughout the country; • Product specific installation videos;

    • Specialty catalogs;

     • Code reports;

     •  Technical fliers and bulletins;

     • Master format specifications;

     • Material safety data sheets;

     • Corrosion information;

     • Simpson Strong-Tie Autocad menu;

     • Simpson Strong-Tie Strong-Wall® Selector software; and

     •  Answers to frequently asked questions and technical topics.

    Failure to follow fully all of the notes and instructions provided by Simpson

    Strong-Tie Company Inc. may result in improper installation of products.Improperly installed products may not perform to the specifications set

    forth in this catalog and may reduce a structure’s ability to resist the

    movement, stress, and loading that occurs from gravity loads as well as

    impact events such as earthquakes and high velocity winds.

    Simpson Strong-Tie Company Inc. does not guarantee the performance

    or safety of products that are modified, improperly installed or not used

    in accordance with the design and load limits set forth in this catalog.

    General NotesThese notes are provided to ensure proper selection and installation of Simpson Strong-Tie Company Inc. products andmust be followed carefully 

    a. Simpson Strong-Tie Company Inc. reserves the right to change

    specifications, designs, and models without notice or liability for

    such changes.

    b. Steel used for each Simpson Strong-Tie® product is individually

    selected based on the product’s steel specifications, including strength,

    thickness, formability, finish, and weldability. Contact Simpson Strong-

     Tie for steel information on specific products.

    c. Unless otherwise noted, dimensions are in inches, loads are in pounds.

    d. Unless otherwise noted, welds, screws, bolts and nails may not

    be combined to achieve highest load value. 8d (0.131 "x2  ½" ), 10d

    (0.148"x3" ), and 16d (0.162"x3½" ) specify common nails that meet the

    requirements of ASTM F1667. When a shorter nail is specified, it will be

    noted (for example 8dx1½ ). Refer to Simpson Strong-Tie Nailing Guide,

    NDS (National Design Specification) and ASTM F1667 (American

    Society of Testing and Materials) for more nail info.

    e. Do Not Overload. Do not exceed catalog allowable loads, which would jeopardize the product.

    f. Unless otherwise noted, allowable loads are for Douglas Fir-Larch

    under continuously dry conditions. Allowable loads for other species

    or conditions must be adjusted according to the code. In many

    cases, Simpson Strong-Tie code reports will indicate loads derived

    from Doug Fir header material only. However under ICC-ES AC13,

    loads for Douglas Fir are the same as LVL, LSL, PSL, Glulam and

    Southern Pine, since the specific gravity of these wood species fall

    within the specific gravity range of the AC13 criteria. The section

    from the AC13 criteria indicating the range of specific gravity reads

    as follows: 3.2.3 The species of lumber used shall have a specific

    gravity not greater than 0.55 as determined in accordance with the

    NDS. This chart shows specific gravity for the different wood species:

    Species Fc  ┴  Specific Gravity

    Douglas Fir-Larch (DF) 625 psi 0.50

    Southern Pine (SP) 565 psi 0.55

    Spruce-Pine-Fir (SPF) 425 psi 0.42

    Hem Fir (HF) 405 psi 0.43

    Glulam 650 psi 0.50

    LVL (DF/SP) 750 psi 0.50

    LSL (E = 1.3x106 ) 680 psi 0.50

    LSL (E ≥ 1.5x106 ) 880 psi 0.50

    Parallam® PSL 750 psi 0.50

    g. All references to bolts or machine bolts (MBs) are for structural quality

    through bolts (not lag screws or carriage bolts) equal to or better than

     ASTM Standard A307, Grade A.; SSTB, PAB, SWSB-AB, and SSWAB is

     ASTM F1554 Grade 36. SWSB-ABHS and SSWAB-HS is ASTM A449.

    h. Unless otherwise noted, bending steel in the field may cause fractures

    at the bend line. Fractured steel will not carry load and must bereplaced.

    i. A fastener that splits the wood will not take the design load. Evaluate

    splits to determine if the connection will perform as required. Dry wood

    may split more easily and should be evaluated as required. If wood

    tends to split, consider pre-boring holes with diameters not exceeding

    75% of the nail diameter (2012 NDS 11.1.6.3).

     j. Wood shrinks and expands as it loses and gains moisture, particularly

    perpendicular to its grain. Take wood shrinkage into account

    when designing and installing connections. Simpson Strong-Tie

    manufactures products to fit common dry lumber dimensions. If

    you need a connector with dimensions other than those listed in

    this catalog, Simpson Strong-Tie may be able to vary connector

    dimensions; contact Simpson Strong-Tie. The effects of wood

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    Strong-Wall ® Shearwalls

    Important Information & General Notes

    General Instructions for the Designer These general instructions for the designer are provided to ensure proper selection and installation of Simpson Strong-Tie Company Inc. products a

    must be followed carefully. These general instructions are in addition to the specific design and installation instructions and notes provided for ea

    particular product, all of which should be consulted prior to and during the design process.

    a. The term “Designer” used throughout this catalog is intended to

    mean a licensed/certified building design professional, a licensed

    professional engineer, or a licensed architect.

    b. All connected members and related elements shall be designed by

    the Designer.

    c. All installations should be designed only in accordance with the

    allowable load values set forth in this catalog.

    d. Simpson Strong-Tie strongly recommends the following addition

    to construction drawings and specifications: “Simpson Strong-Tie® 

    products are specifically required to meet the structural calculations of

    plan. Before substituting another brand, confirm load capacity based

    on reliable published testing data or calculations. The Engineer/ 

    Designer of Record should evaluate and give written approval for

    substitution prior to installation.”

    e. Simpson Strong-Tie will provide upon request code testing data on all

    products that have been code tested.

    f. For cold-formed steel applications, as a minimum all screws mus

    comply with Society of Automotive Engineers (SAE) Standard J78

    Steel Self Drilling Tapping Screws, and must have a Type II coating in

    accordance with ASTM B 633, Electrodeposited Coatings of Zinc o

    Iron and Steel. Screw strength shall be calculated in accordance with

    2007 AISI NASPEC Section E4, if applicable, or shall be based on the

    manufacturer’s design capacity determined from testing.

    g. Local and/or regional building codes may require meeting specia

    conditions. Building codes often require special inspection of anchor

    installed in concrete and masonry. For compliance with these

    requirements, it is necessary to contact the local and/or regiona

    building authority. Except where mandated by code, Simpson

    Strong-Tie products do not require special inspection.

    h. For Masterformat® specifications, visit www.strongtie.com/literature

    masterformat.html.

    General Instructions for the Installer These general instructions for the installer are provided to ensure proper selection and installation of Simpson Strong-Tie Company Inc. products a

    must be followed carefully. These general instructions are in addition to the specific installation instructions and notes provided for each particu

    product, all of which should be consulted prior to and during installation of Simpson Strong-Tie Company Inc. products.

    a. All specified fasteners must be installed according to the instructions in

    this catalog. Incorrect fastener quantity, size, placement, type, material,

    or finish may cause the product to fail.

     • 16d fasteners are common nails (0.162" dia. x 3½" long) and cannot

    be replaced with 16d sinkers (0.148" dia. x 3 ¼"  long) for full load

    value unless otherwise specified.

     • Unless otherwise noted screws may not be used to replace nails in

    connectors unless approved and recommended by the Designer/ 

    Engineer of Record. Unless stated otherwise, Simpson Strong-Tie

    cannot and does not make any representations regarding the

    suitability of use or load-carrying capacities of connectors with

    screws replacing nails.

     • When using stainless-steel connectors, use stainless-steel fasteners.

    When using ZMAX ® /HDG galvanized connectors, use fasteners

    galvanized per ASTM A153.

    b. Fill all fastener holes as specified in the installation instructions for that product.

    c. Do not overdrive nails. Overdriven nails reduce shear capacity.

    d. Use the materials specified in the installation instructions. Substitution

    of or failure to use specified materials may cause the product to fail.

    e. Do not add fastener holes or otherwise modify Simpson Strong-Tie

    Company Inc. products. The performance of modified products may

    be substantially weakened. Simpson Strong-Tie will not warrant or

    guarantee the performance of such modified products.

    f. Install products in the position specified in the catalog.

    g. Do not alter installation procedures from those set forth in this catalog.

    h. Bolt holes shall be at least a minimum of " and no more than a

    maximum of ⁄" larger than the bolt diameter (per the 2012 NDS,

    section 11.1.3.2. and AISI NASPEC, section E3a if applicable).

    i. Install all specified fasteners before loading the product.

     j. Use proper safety equipment.

    k. Welding galvanized steel may produce harmful fumes; follow prop

    welding procedures and safety precautions. Welding should be

    accordance with A.W.S. (American Welding Society) standards. Unle

    otherwise noted Simpson Strong-Tie® connectors cannot be welded

    l. Pneumatic or powder-actuated fasteners may deflect and inju

    the operator or others. Pneumatic nail tools may be used to inst

    connectors, provided the correct quantity and type of nails (lengand diameter) are properly installed in the nail holes. Tools with n

    hole-locating mechanisms should be used. Follow the manufacture

    instructions and use the appropriate safety equipment. Overdrivi

    nails may reduce allowable loads. Contact Simpson Strong-T

    Powder-actuated fasteners should not be used to install connectors

    m. For wood Strong-Wall holdowns, anchor bolt nuts should be finge

    tight plus  to ½ turn with a hand wrench, with consideration giv

    to possible future wood shrinkage. Care should be taken to not ove

    torque the nut. Impact wrenches should not be used as they m

    preload the holdown.

    n. For cold-formed steel applications, all screws shall be installed

    accordance with the screw manufacturer’s recommendations.

    screws shall penetrate and protrude through the joined materials

    minimum of 3 full exposed threads per AISI Standard for Cold Form

    Steel Framing – General Provisions, section D1.3, if applicable.o. Drilling, sawing, sanding or machining wood products generates wo

    dust, a substance known to the State of California to cause cancer. F

    more information on Proposition 65, visit www.oehha.ca.gov.

    p. For additional installation information, visit the Simpson Strong-Tie pa

    at www.youtube.com/strongtie.

    shrinkage are increased in multiple lumber connections, such as floor-

    to-floor installations. This may result in the vertical rod nuts becoming

    loose, requiring post-installation tightening. (Contact Simpson

    Strong-Tie for information on Takeup Devices.)

    k. Built-up lumber (multiple members) must be fastened together to act as

    one unit to resist the applied load (excluding the connector fasteners).

     This must be determined by the Designer/Engineer of Record.

    l. Some model configurations may differ from those shown in th

    catalog. Contact Simpson Strong-Tie for details.

    m. Do not weld products listed in this catalog unless this publicati

    specifically identifies a product as acceptable for welding, or unle

    specific approval for welding is provided in writing by Simpso

    Strong-Tie. Some steels have poor weldability and a tendency to cra

    when welded. Cracked steel will not carry load and must be replace

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    8

    Strong-Wall ® Shearwalls

    Important Information & General Notes

    Strong-Wall® Selector Application This application helps design professionals select

    an appropriate Simpson Strong-Tie® Wood or Steel Strong-Wall® 

    or Strong-Wall® SB shearwall system!

    Optimized Solution

    Provides the most cost effective Strong-Wall solution

    based on the input shear load.

    Manual Solution Allows designers to choose which type and number of

    walls meet their requirements.

    ✦ Finds lowest cost solution

    ✦ Provides actual drift and uplift values

    ✦ Provides solutions for different model Codes

    ✦ Includes new anchorage solutions

    ✦ Saves, exports, and prints solutions

     You can find the Strong-Wall Selector Application

    at www.strongtie.com/software.

    Limited WarrantySimpson Strong-Tie Company Inc. warrants catalog products to be free

    from defects in material or manufacturing. Simpson Strong-Tie Company

    Inc. products are further warranted for adequacy of design when used in

    accordance with design limits in this catalog and when properly specified,

    installed, and maintained. This warranty does not apply to uses not in

    compliance with specific applications and installations set forth in this

    catalog, or to non-catalog or modified products, or to deterioration due

    to environmental conditions.

    Simpson Strong-Tie® connectors are designed to enable structures to

    resist the movement, stress, and loading that results from impact events

    such as earthquakes and high velocity winds. Other Simpson Strong-Tie

    products are designed to the load capacities and uses listed in this

    catalog. Properly-installed Simpson Strong-Tie products will perform in

    accordance with the specifications set forth in the applicable Simpson

    Strong-Tie catalog. Additional performance limitations for specific

    products may be listed on the applicable catalog pages.

    Due to the particular characteristics of potential impact events, the

    specific design and location of the structure, the building materials

    used, the quality of construction, and the condition of the soils involved,

    damage may nonetheless result to a structure and its contents even if the

    loads resulting from the impact event do not exceed Simpson Strong-Tie

    catalog specifications and Simpson Strong-Tie connectors are properly

    installed in accordance with applicable building codes.

     All warranty obligations of Simpson Strong-Tie Company Inc. shall belimited, at the discretion of Simpson Strong-Tie Company Inc., to repair

    or replacement of the defective part. These remedies shall constitute

    Simpson Strong-Tie Company Inc.’s sole obligation and sole remedy

    of purchaser under this warranty. In no event will Simpson Strong-Tie

    Company Inc. be responsible for incidental, consequential, or special loss

    or damage, however caused.

    This warranty is expressly in lieu of all other warranties, expressed

    or implied, including warranties of merchantability or fitness for a

    particular purpose, all such other warranties being hereby expressly

    excluded. This warranty may change periodically – consult our

    website www.strongtie.com for current information.

     Terms & Conditions of SaleProduct Use

    Products in this catalog are designed and manufactured for the specific

    purposes shown, and should not be used with other connectors not

    approved by a qualified Designer. Modifications to products or changes

    in installations should only be made by a qualified Designer. The

    performance of such modified products or altered installations is the sole

    responsibility of the Designer.

    Indemnity

    Customers or Designers modifying products or installations, or designing

    non-catalog products for fabrication by Simpson Strong-Tie Company

    Inc. shall, regardless of specific instructions to the user, indemnify,

    defend, and hold harmless Simpson Strong-Tie Company Inc. for any andall claimed loss or damage occasioned in whole or in part by non-catalog

    or modified products.

    Non-Catalog and Modified Products

    Consult Simpson Strong-Tie Company Inc. for applications for which there

    is no catalog product, or for connectors for use in hostile environments, with

    excessive wood shrinkage, or with abnormal loading or erection requirements.

    Non-catalog products must be designed by the customer and will be fabri-

    cated by Simpson Strong-Tie in accordance with customer specifications.

    Simpson Strong-Tie cannot and does not make any representations

    regarding the suitability of use or load-carrying capacities of non-catalog

    products. Simpson Strong-Tie provides no warranty, express or implied,

    on non-catalog products. F.O.B. Shipping Point unless otherwise specified.

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    Working with specifiers, builders

    and contractors has given

    Simpson Strong-Tie insight into

    the needs of the various players

    in the design and construction

    process. This insight has

    enabled Simpson Strong-Tie to

    design a composite shearwall

    that features some of the highes

    allowable loads in the industry

    while offering the easiest and

    fastest installation: The Steel

    Strong-Wall® shearwall.

     • Code Listed — New ICC-ES ESR-1679

    code report evaluated to the 2012 IRC/IBC

     • Stronger Wall — Load values between

    two and three times higher than the origina

    Wood Strong-Wall

     • Less Labor = Increased Production —

    Fewer anchor bolts and fasteners coupled

    with easy access to the top and bottom ofthe wall result in more efficient installation

     • Easier for All Trades — An easy-to-use

    anchor-bolt template for concrete

    contractors, pre-attached wood studs and

    predrilled holes where electricians need

    them for wiring

     • Support and Service — Simpson Strong-T

    provides the best engineering technical

    support and experienced field representatio

    available

     The Steel Strong-Wall product line has grow

    to address more applications:

     • Standard installations on concrete

     • Garage portal system

     • Anchorage solutions

     • Wood floor solutions

     • Two-story stacked shearwalls

    • Balloon framing up to 20' tall

     • Cold-formed steel applications

    Steel Strong-Wall®

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    Standard Application on Concrete Foundations

    Simpson Strong-Tie® Steel Strong-Wall® shearwalls provide

    superior performance, design flexibility and ease of installation.

     All Steel Strong-Wall shearwalls are evaluated to the

    2012 IRC/IBC and are listed by ICC-ES.

    Material: Vertical Panel—10 gauge

    Finish: Vertical Panel—Galvanized

     Top and Base Plates—Simpson Strong-Tie® gray paint

    Codes: ICC-ES ESR-1679;City of L.A. RR 25625;

    State of Florida FL5113

    SSW24x8

    Steel Strong-WallWidth(in.)

    Nominal Height(ft.)

    Naming Legend

    Wall Profiles

    SSW15

    SSW18

    SSW21

    SSW12

    SSW15

    SSW18

    SSW21

    SSW24 SSW24

    Standard Installation

    U.S. Patent 8,281,551Canadian Patent 2,489,845

     Attaches easilyto header ortop plates.

     Attach optionalblocking or framing using

    extra ¼" holes

     Additional openingsfor plumbing andelectrical

    Predrilled holes withgrommetsfor wiring

    Pre-attached woodstuds for easierintegration into

    framing

     Anchors withonly two bolts –

    form-mountedtemplates allow

    precise placementbefore the pour

    SSW24x10

    Garage Installation

    U.S. Patent 8,281,551Canadian Patent 2,489,845

    SSW12x7

     Additional 11"diameter holesallowed in woodstud at eachobround hole

    Foundation design(size and reinforcement)by Designer

    See page 17 forgarage-wall optionsbased on standardinstallation andpage 16 for higher capacitygarage portal system

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    Steel Strong-Wall ® Shearwalls

    Pre-attached wood studs are 2x4 for walls

    7'-10' tall, and 2x6 for walls 11'-13' tall.

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    Standard Application on Concrete Foundations

    Standard Installation

    U.S. Patent 8,281,551Canadian Patent 2,489,845

    Installation Information

     • Do not cut the Steel Strong-Wall® or enlarge existing holes.

    Doing so will compromise the performance of the wall.

     • Do not use an impact wrench to tighten nuts on the

    anchor bolts.

     • Maximum shim thickness between the Steel Strong-Wall

    and top plates or header is7

    " using Simpson Strong-Tie

    ®

     Strong-Drive® ¼" x 3½" SDS Heavy-Duty Connector screws.

    For additional shim thicknesses, see detail 5/SSW2 on

    page 76.

     • Walls with 2x4 pre-attached studs may also be used in 2x6

    wall framing. Install the wall flush to one face

    of the framing and add furring to the opposite side.

     • Walls may be installed with solid or multi-ply headers, see

    detail 11/SSW2 page 77 for details.

    Steel Strong-Wall® Product Data

    Model No.W

    (in.)H

    (in.)T

    (in.)

     AnchorBolts

    Numberof Screws

    in Topof Wall

    TotalWall

    Weight(lbs.)Qty.

    Dia.

    (in.)SSW12x7 12 80 3½ 2   ¾   4 74

    SSW15x7 15 80 3½ 2 1 6 86

    SSW18x7 18 80 3½ 2 1 9 99

    SSW21x7 21 80 3½ 2 1 12 117

    SSW24x7 24 80 3½ 2 1 14 127

    SSW12x7.4 12 85½ 3½ 2   ¾   4 78

    SSW15x7.4 15 85½ 3½ 2 1 6 91

    SSW18x7.4 18 85½ 3½ 2 1 9 104

    SSW21x7.4 21 85½ 3½ 2 1 12 122

    SSW24x7.4 24 85½ 3½ 2 1 14 134

    SSW12x8 12 93¼ 3½ 2   ¾   4 85

    SSW15x8 15 93¼ 3½ 2 1 6 99

    SSW18x8 18 93¼ 3½ 2 1 9 113

    SSW21x8 21 93¼ 3½ 2 1 12 132SSW24x8 24 93¼ 3½ 2 1 14 144

    SSW12x9 12 1 05¼ 3 ½ 2   ¾   4 94

    SSW15x9 15 105¼ 3½ 2 1 6 110

    SSW18x9 18 105¼ 3½ 2 1 9 125

    SSW21x9 21 105¼ 3½ 2 1 12 147

    SSW24x9 24 105¼ 3½ 2 1 14 160

    SSW12x10 12 117¼ 3½ 2   ¾   4 104

    SSW15x10 15 117¼ 3½ 2 1 6 121

    SSW18x10 18 117¼ 3½ 2 1 9 138

    SSW21x10 21 117¼ 3½ 2 1 12 162

    SSW24x10 24 117¼ 3½ 2 1 14 177

    SSW15x11 15 129¼ 5½ 2 1 6 148

    SSW18x11 18 129¼ 5½ 2 1 9 167

    SSW21x11 21 129¼ 5½ 2 1 12 193

    SSW24x11 24 129¼ 5½ 2 1 14 209

    SSW15x12 15 141¼ 5½ 2 1 6 160

    SSW18x12 18 141¼ 5½ 2 1 9 180

    SSW21x12 21 141¼ 5½ 2 1 12 208

    SSW24x12 24 141¼ 5½ 2 1 14 225

    SSW18x13 18 153¼ 5½ 2 1 9 194

    SSW21x13 21 153¼ 5½ 2 1 12 224

    SSW24x13 24 153¼ 5½ 2 1 14 243

    HeaderConnection

    (See page 77 detail11/SSW2 for multi-ply

     header option and page 16 forGarage Portal System)

    DO NOTcut wall or enlarge

    existing holes

    Place Steel Strong-Wall® shearwall over theanchor bolts and secure with heavy hexnuts (provided). Snug tight fit required, donot use an impact wrench.• 1¼" wrench/socket required for ¾" nut• 15" wrench/socket required for 1" nut

     Attach to top platesor header with

    ¼"x3½" SDS screws(provided).

    Shim asnecessary

    for tight fit

     T 

    W

    H

    Steel Strong-Wall ® Shearwalls

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    2

    Steel Strong-Wall ® Shearwalls

    Standard Application on Concrete Foundations

    SSWModel

     Allowable Axial Load

    (lbs.)

    Seismic2 Wind

     Allowable ASDShear Load V

    (lbs.)

    Drift at Allowable Shear

    (in.)

     Anchor Tension at Allowable Shear5 

    (lbs.)

     Allowable ASDShear Load V

    (lbs.)

    Drift at Allowable Shear

    (in.)

     Anchor Tension at Allowable Shear5 

    (lbs.)

    SSW12x7

    1000 955 0.36 9840 1215 0.46 13620

    4000 955 0.36 9840 1095 0.42 11765

    7500 890 0.34 9010 890 0.34 9010

    SSW15x7

    1000 1855 0.36 15655 1860 0.36 15715

    4000 1665 0.33 13550 1665 0.33 13550

    7500 1445 0.28 11340 1445 0.28 11340

    SSW18x7

    1000 2905 0.34 19660 3480 0.41 25805

    4000 2905 0.34 19660 3250 0.38 23135

    7500 2905 0.34 19660 2980 0.35 20370

    SSW21x7

    1000 4200 0.32 23755 4440 0.34 25710

    4000 4200 0.32 23755 4440 0.34 25710

    7500 4200 0.32 23755 4310 0.33 24635

    SSW24x7

    1000 5495 0.29 26270 5730 0.31 27835

    4000 5495 0.29 26270 5730 0.31 27835

    7500 5495 0.29 26270 5730 0.31 27835

    SSW12x7.4

    1000 870 0.39 9515 1105 0.49 13070

    4000 870 0.39 9515 970 0.43 10940

    7500 750 0.33 7940 750 0.33 7940

    SSW15x7.4

    1000 1685 0.39 15035 1700 0.39 15215

    4000 1500 0.34 12905 1500 0.34 12905

    7500 1270 0.29 10510 1270 0.29 10510

    SSW18x7.4

    1000 2700 0.37 19475 3255 0.44 25790

    4000 2700 0.37 19475 3040 0.42 23125

    7500 2700 0.37 19475 2790 0.38 20390

    SSW21x7.4

    1000 3890 0.35 23420 4230 0.38 26405

    4000 3890 0.35 23420 4230 0.38 26405

    7500 3890 0.35 23420 4035 0.36 24655

    SSW24x7.4

    1000 5330 0.34 27610 5450 0.34 28485

    4000 5330 0.34 27610 5450 0.34 28485

    7500 5330 0.34 27610 5450 0.34 28485

    SSW12x8

    1000 775 0.42 9180 985 0.53 12560

    4000 775 0.42 9180 865 0.47 10550

    7500 665 0.36 7630 665 0.36 7630

    SSW15x8

    1000 1505 0.42 14515 1530 0.43 14835

    4000 1345 0.37 12545 1345 0.37 12545

    7500 1135 0.32 10190 1135 0.32 10190

    SSW18x8

    1000 2480 0.41 19525 2985 0.50 25795

    4000 2480 0.41 19525 2790 0.47 23160

    7500 2480 0.41 19525 2560 0.43 20410

    SSW21x8

    1000 3560 0.39 23360 3960 0.43 27240

    4000 3560 0.39 23360 3960 0.43 27240

    7500 3560 0.39 23360 3700 0.41 24660

    SSW24x8

    1000 4865 0.37 27435 5105 0.39 29370

    4000 4865 0.37 27435 5105 0.39 29370

    7500 4865 0.37 27435 5055 0.39 28960

    SSW12x9

    1000 660 0.47 8745 840 0.60 11915

    4000 660 0.47 8745 705 0.50 9485

    7500 505 0.36 6380 505 0.36 6380

    SSW15x9

    1000 1315 0.45 14250 1315 0.47 14250

    4000 1130 0.38 11740 1130 0.40 11740

    7500 925 0.31 9235 925 0.33 9235

    SSW18x9

    1000 2145 0.47 18890 2645 0.58 25800

    4000 2145 0.47 18890 2470 0.54 23130

    7500 2145 0.47 18890 2265 0.50 20370

    SSW21x9

    1000 3145 0.46 23265 3590 0.52 28215

    4000 3145 0.46 23265 3530 0.51 27490

    7500 3145 0.46 23265 3280 0.47 24680

    SSW24x9

    1000 4285 0.44 27210 4605 0.47 30150

    4000 4285 0.44 27210 4605 0.47 30150

    7500 4285 0.44 27210 4480 0.46 28970

    See footnotes on page 13.

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    Steel Strong-Wall ® Shearwalls

    Standard Application on Concrete Foundations

    SSWModel

     Allowable Axial Load

    (lbs.)

    Seismic2 Wind

     Allowable ASDShear Load V

    (lbs.)

    Drift at Allowable Shear

    (in.)

     Anchor Tension at Allowable Shear5 

    (lbs.)

     Allowable ASDShear Load V

    (lbs.)

    Drift at Allowable Shear

    (in.)

     Anchor Tension at Allowable Shear5 

    (lbs.)

    SSW12x10

    1000 570 0.52 8345 725 0.67 11300

    4000 570 0.52 8345 570 0.52 8345

    7500 360 0.33 4930 360 0.33 4930

    SSW15x10

    1000 1110 0.53 13150 1145 0.54 13690

    4000 960 0.45 10975 960 0.45 10975

    7500 715 0.34 7775 715 0.34 7775

    SSW18x10

    1000 1860 0.53 18030 2360 0.67 25545

    4000 1860 0.53 18030 2215 0.63 23095

    7500 1860 0.53 18030 2035 0.57 20395

    SSW21x10

    1000 3045 0.50 25905 3265 0.56 28795

    4000 3045 0.50 25905 3170 0.54 27510

    7500 2780 0.45 22780 2780 0.47 22780

    SSW24x10

    1000 3835 0.50 27100 4205 0.55 30920

    4000 3835 0.50 27100 4205 0.55 30920

    7500 3790 0.49 26660 3790 0.49 26660

    SSW15x11

    1000 975 0.58 12625 1015 0.60 13285

    4000 815 0.48 10135 815 0.48 10135

    7500 550 0.33 6470 550 0.33 6470

    SSW18x11

    1000 1635 0.58 17295 2075 0.73 24280

    4000 1635 0.58 17295 2010 0.71 23110

    7500 1635 0.58 17295 1730 0.61 18645

    SSW21x11

    1000 2485 0.58 22325 2990 0.70 29230

    4000 2485 0.58 22325 2785 0.65 26220

    7500 2305 0.54 20205 2305 0.54 20205

    SSW24x11

    1000 3475 0.57 27055 3845 0.63 31285

    4000 3475 0.57 27055 3710 0.60 29680

    7500 3205 0.52 24260 3205 0.52 24260

    SSW15x12

    1000 815 0.63 11280 905 0.70 12855

    4000 690 0.53 9245 690 0.53 9245

    7500 390 0.30 4905 390 0.30 4905

    SSW18x12

    1000 1450 0.63 16605 1845 0.80 23220

    4000 1450 0.63 16605 1815 0.79 226507500 1435 0.62 16380 1435 0.62 16380

    SSW21x12

    1000 2210 0.63 21485 2755 0.79 29555

    4000 2210 0.63 21485 2420 0.69 24335

    7500 1900 0.54 17690 1900 0.54 17690

    SSW24x12

    1000 3150 0.63 26710 3540 0.71 31575

    4000 3150 0.63 26710 3250 0.65 27890

    7500 2705 0.54 21855 2705 0.54 21855

    SSW18x13

    1000 1335 0.68 16580 1695 0.87 23105

    4000 1335 0.68 16580 1580 0.81 20830

    7500 1180 0.60 14195 1180 0.60 14195

    SSW21x13

    1000 1985 0.68 20765 2520 0.87 29200

    4000 1985 0.68 20765 2110 0.73 22530

    7500 1555 0.53 15300 1555 0.53 15300

    SSW24x131000 2830 0.68 25795 3275 0.79 317554000 2830 0.68 25795 2860 0.69 26165

    7500 2280 0.55 19545 2280 0.55 19545

    1. Allowable shear loads and anchor tension forces are applicable toinstallation on concrete with minimum f'c = 2,500 psi using the ASDbasic (Section 1605.3.1) or the alternative basic (Section 1605.3.2)load combinations. Load values include evaluation of bearingstresses on the foundation and do not require further evaluationby the Designer.

    2. For seismic designs based on the 2012 IBC using R = 6.5.For other codes, use the seismic coefficients correspondingto light-frame bearing walls with wood structural panels or sheetsteel panels.

    3. Allowable shear, drift, and anchor tension values may beinterpolated for intermediate height or axial loads.

    4. High-strength anchor bolts are required for anchor tension forcesexceeding the allowable load for standard-strength bolts tabulatedon pages 29-30. High-strength anchor bolts are required forSSW12 when seismic shear x shearwall height exceeds61,600 in.-lbs. See pages 29-35 for SSWAB anchor boltinformation and anchorage solutions.

    5. Tabulated anchor tension loads assume no resisting axial load.For anchor tension loads at design shear values and including theeffect of axial load, refer to the Strong-Wall Selector Application oruse the equations on page 15. Drifts at lower design shear may belinearly reduced.

    6. See page 14 for allowable out-of-plane loads and axial capacities.

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    4

    Steel Strong-Wall ® Shearwalls

    Standard Application on Concrete Foundations

     Allowable Out-of-Plane Loads (psf)for Single-Story Walls on Concrete Foundations

    ModelWidth (in.)

     Axial Load(lbs.)

    Nominal Height of Shearwall (ft.)

    8 9 10 11 12 13

    12

    1000 200 140 105 N/A N/A N/A

    4000 150 105 70 N/A N/A N/A

    7500 90 55 25 N/A N/A N/A

    15

    1000 165 130 100 80 70 N/A

    4000 130 95 70 50 40 N/A

    7500 95 65 45 30 15 N/A

    18 7500 310 215 160 120 90 70

    21 7500 260 185 135 100 70 50

    24 7500 275 195 135 105 80 65

    1. Loads shown are at ASD level in pounds per square foot (psf) ofwall with no further increase in load allowed.

    2. Axial load denotes maximum gravity load permitted on entirepanel acting in combination with the out-of-plane load.

    3. Load considers a deflection limit of h/240.

    4. Values are applicable to either the ASD basic or alternative basic

    load combinations.

    5. Al lowable out-of-plane loads for the 12- and 15-inch walls maybe linearly interpolated between the axial loads shown.

    6. Table loads apply only to single-story walls on concretefoundations.

    7. N/A =Not Applicable.

     Axial Capacities for Single-Story Walls on Concrete Foundations

    ModelWidth(in.)

    Compression Capacity with No Lateral Loads (lbs.)

    Nominal Height of Shearwall (ft.)

    7 7.4 8 9 10 11 12 13

    12 20200 19000 17200 14500 11800 N/A N/A N/A

    15 25300 24200 22600 20000 17400 14900 12600 N/A

    18 42500 40400 37500 32900 28400 24100 20200 17200

    21 43700 41100 37500 32000 26700 22000 18400 15700

    24 51600 48800 44800 38700 32900 27400 22900 19500

    1. Compression capacity is lesser of wall buckling capacity or 2,500

    psi concrete bearing limit.2. Compression capacity of wall assumes no lateral loads present.

    See allowable in-plane or out-of-plane load tables for combinedlateral and axial loading conditions.

    3. Values are applicable to either the ASD basic or alternative basic

    load combinations.4. Table loads apply only to single-story walls on concrete

    foundations.

    5. N/A =Not Applicable.

     Allowable Tension Loads for Steel Strong-Wall® Wood Jamb Stud

    ModelWidth(in.)

    Tension Capacity per Jamb Stud (lbs.)

    Nominal Height of Shearwall (ft.)

    7 7.4 8 9 10 11 12 13

    12 1535 1535 1845 2150 2500 N/A N/A N/A

    15 1845 2150 2460 2500 2500 3070 3685 N/A

    18 1845 1845 2150 2500 2500 3380 3685 3980

    21 1845 1845 2150 2500 2500 3070 3685 398024 1845 1845 2150 2500 2500 3070 3685 3980

    1. Allowable tension load is based on capacity of the lesser of theconnection between the stud and the steel shearwall or studtension capacity. The capacity of the SSW wall anchor bolt andanchorage to the foundation must be adequate to transfer theadditional tension.

    2. Loads include a 1.60 load duration increase for wood subjectedto wind or earthquake. Reductions for other load durations mustbe taken according to the applicable code.

    3. N/A =Not Applicable.

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    6

    Steel Strong-Wall ® Shearwalls

    Garage Portal Systems on Concrete Foundations

    Simpson Strong-Tie offers a Steel Strong-Wall® shearwall option for

    garage portal systems which combines simplified installation with superior

    performance.

     • Higher capacity with reduced concrete anchorage requirements

    (see Alternate Garage Front Options on page 17 for other options)

     • Same anchor bolt template

     •

    Complete kit available to simplify the connection to theheader or beam

    Material & Finish: See page 10.

    For product data and naming scheme information, see pages 10-11.

    Suggested Example Specification: SSW12x7 with SSWP-KT

    Garage Header Rough Opening Height

    Model No. H CurbRough

    Opening Height

    SSW12x7SSW15x7SSW18x7

    5 ½"   7'-1 ½"

    6"   7'-2"

    SSW12x7.4SSW15x7.4SSW18x7.4

    0"   7'-1 ½"

    SSW12x8SSW15x8SSW18x8

    ½"   8'-2¾" 3

    6"   8'-3¼" 3

    1. The height of the garage curb above the garage slab is critical for rough headeropening at garage return walls.

    2. Shims are not provided with Steel Strong-Wall®.

    3. Furring down garage header may be necessary for correct rough opening height.

    Installation

     • Portal Frame Connection Kit is required to achieve increased load

    values listed for portal frame system.

     • SSWPS straps must be installed on exterior face of the SteelStrong-Wall® shearwall. Position header flush with exterior face of

    the Steel Strong-Wall shearwall.

     • Do not cut the Steel Strong-Wall or enlarge existing holes. Doing so

    will compromise the performance of the wall.

     • Do not use an impact wrench to tighten nuts on the

    anchor bolts.

     • Maximum shim thickness between the Steel Strong-Wall and

    header is 7" using Simpson Strong-Tie® Strong-Drive® ¼" x 3½"

    SDS Heavy-Duty Connector screws.

     • Walls with 2x4 pre-attached studs may also be used in 2x6 wall

    framing. Install the wall flush to exterior face of the framing and add

    furring to the opposite side.

     • Walls may be installed with solid or multi-ply headers,

    see detail 11/SSW2 page 77 for details.

    Portal Frame Connection KitModel No. Contents

    SSWP-KT

    (2) 10 gauge SSWPS straps

    (8) #14x1 self-drilling screws

    Installation instructions

    For a complete set of wall profile

    drawings, see page 10.

    Exterior face

    DO NOTcut wall or enlarge

    existing holes

     This installation reflects lateral load requirements of a single-wall portal system.*

    It is the Designer’s responsibility to provide a complete load path for all loads

    in accordance with the governing codes.

    *Refer to footnotes 2, 4 and 9 on page 17.

    U.S. Patent

    8,281,551

    Canadian Patent

    2,489,845

    Simpson Strong-Tie®

    LSTA24 strap (min.)at beam to post

    Header support post(design by Designer)

    Simpson Strong-Tie®

    STHD10 holdown(1000 lb. uplift capacity min.)*

    Column base detail by Designer(not shown for clarity)

    Shear transferby Designer

    (10) 10dx2½minimum nails

    Header

    Max. 7" shimas required

    SimpsonStrong-Tie®

    SSWPS straps

     Align notches withbottom of header

    SteelStrong-Wall®

    shearwall4-#14x1(provided with 

    SSWP-KT) 

    See page 11 forheader connection

    Simpson Strong-Tie®

    SSWPS straps

    Header byDesigner –

    31" min. widthx 12" min.

    nominal depth*

    Steel Strong-Wall®

    shearwall (exterior face)

    See page 11 forconnection tofoundation

    Foundation design(size and reinforcement)by Designer

    HCurb

    Roughopeningheight

    8' Min. 16'-4" Max.*

     S t e

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    Steel Strong-Wall ® Shearwalls

    Garage Portal Systems on Concrete Foundations

    HCurb

    Garage Wall Option 1 Garage Wall Option

    Note: Steel Strong-Wall® nominal 7 ft. height walls are80", that is 2" taller than WoodStrong-Wall® shearwalls.

    See page 77, detail 11/SSW2 formulti-ply header options

    SSWModel

     Allowable AxialLoad(lbs.)

    Single-Wall Garage Portal System2

    Seismic3 Wind

     Allowable ASDShearLoad V(lbs.)

    Drift at Allowable

    Shear(in.)

     AnchorTension at Allowable

    Shear8 (lbs.)

     Allowable ASDShearLoad V(lbs.)

    Drift at Allowable

    Shear(in.)

     AnchorTension at Allowable

    Shear8 (lbs.)

    SSW12x7w/ SSWP-KT

    1000 1350 0.42 11550 1645 0.51 15390

    4000 1350 0.42 11550 1435 0.45 12560

    7500 1185 0.37 9750 1185 0.37 9750

    SSW15x7

    w/ SSWP-KT

    1000 2210 0.38 15930 2210 0.38 15930

    4000 2000 0.34 13925 2000 0.34 13925

    7500 1760 0.30 11835 1760 0.30 11835

    SSW18x7

    w/ SSWP-KT

    1000 3865 0.40 25785 3865 0.40 25785

    4000 3610 0.38 23125 3610 0.38 23125

    7500 3315 0.35 20405 3315 0.35 20405

    SSW12x7.4

    w/ SSWP-KT

    1000 1275 0.45 11695 1535 0.54 15320

    4000 1275 0.45 11695 1310 0.46 12135

    7500 1045 0.37 9055 1045 0.37 9055

    SSW15x7.4

    w/ SSWP-KT

    1000 2065 0.42 15900 2065 0.42 15900

    4000 1855 0.37 13765 1855 0.37 13765

    7500 1590 0.32 11330 1590 0.32 11330

    SSW18x7.4w/ SSWP-KT

    1000 3615 0.45 25770 3615 0.45 25770

    4000 3380 0.42 23150 3380 0.42 23150

    7500 3100 0.38 20390 3100 0.38 20390

    SSW12x8

    w/ SSWP-KT

    1000 1180 0.46 11845 1375 0.55 14770

    4000 1140 0.45 11305 1140 0.45 11305

    7500 875 0.35 8110 875 0.35 8110

    SSW15x8

    w/ SSWP-KT

    1000 1865 0.42 15570 1865 0.42 15570

    4000 1640 0.37 13130 1640 0.37 13130

    7500 1380 0.31 10600 1380 0.31 10600

    SSW18x8

    w/ SSWP-KT

    1000 3280 0.47 25325 3315 0.48 25775

    4000 3100 0.45 23160 3100 0.45 23160

    7500 2840 0.41 20365 2840 0.41 20365

    1. Allowable shear loads and anchor tension forcesare applicable to Single-Wall Garage Portal Systeminstallation on concrete with minimum f'c = 2500 psiusing the ASD basic (Section 1605.3.1) or thealternative basic (Section 1605.3.2) load combinatioLoad values include evaluation of bearing stresses.

    2. A Double-Wall Garage Portal System consists of twowalls with a header continuous across both panels.

     The allowable load is twice the Single-Wall Portal valu

    3. For seismic designs based on the 2012 IBC usingR=6.5. For other codes, use the seismic coefficientscorresponding to light-frame bearing walls with woodstructural panels or sheet steel panels.

    4. The minimum header size shown in the details isthe minimum required for lateral rigidity of the portalsystem. Larger headers may be required due tovertical loading. Support post uplift connectors maybe reduced where justified by calculations.

    5. Recommended header moisture content is 19% orless at time of installation.

    6. Allowable shear, drift, and anchor tension values mabe interpolated for intermediate height or axial loads.

    7. High-strength anchor bolts are required for anchortension forces exceeding the allowable load forstandard-strength bolts tabulated on pages 29-30.High strength anchor bolts are required for SSW12

    when seismic shear x panel height exceeds61,600 in.-lbs. See pages 29-35 for SSWAB anchorbolt information and anchorage solutions.

    8. Tabulated anchor tension loads assume no resistingaxial load. For anchor tension loads at design shearvalues and including the effect of axial load, refer to tStrong-Wall Selector Application or use the equationon page 15 (include K factor in uplift calculations).Drifts at lower design shear may be linearly reduced.

    9. Longer header spans can be accommodated if largeheaders are used such that equivalent stiffness isequal to or greater than that provided by the minimuheader size and maximum length indicated.

    U.S. Patent8,281,551Canadian Patent2,489,845

     Alternate Garage Front Options These alternate garage front options may

    be used for applications when the Steel

    Strong-Wall® shearwall is installed at the full

    height (option 1) or without the additional Portal

    Frame Kit (option 2), when higher capacity or

    reduced concrete anchorage are not needed.

    Refer to the Standard Application on Concrete

    Foundations on pages 10-13 for product data

    and allowable load values.

    For Garage Wall Option 2,

    the Designer shall design for:

    1. Shear transfer

    2. Out-of-plane loading effect

    3. Increased overturning and drift

    due to additional height

    Header and postby Designer

    Column base detailby Designer(not shown)

    Sheartransfer byDesigner

    Header byDesigner –3 1" min.

    width

    HCurb

    Rough

    openingheight

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    8

    Steel Strong-Wall ® Shearwalls

    First-Story Wood Floor Systems

    Steel Strong-Wall® shearwalls designed for use on concrete

    foundations can be used with wood floor systems by extending

    the anchor bolts and installing compression nuts and solid

    blocking below the wall.

    Material & Finish: See page 10.

    Codes: ICC-ES ESR-1679:

    City of L.A. RR25625;

    State of Florida FL5113

    For product data and naming scheme information,

    see pages 10-11.

    Wood First-Floor Wall Connection KitWall Width

    (in.)Model No. Contents

    12 SSW12-1KT   (1) Shear-Transfer Plate(with #14 self-drilling screws)

    (2) ¾" or 1"x18" Threaded RodsF1554 Grade 36

    (2) Coupler Nuts(2) Heavy Hex NutsInstallation Instructions

    15 SSW15-1KT

    18 SSW18-1KT

    21 SSW21-1KT

    24 SSW24-1KT

    1. Two heavy hex nuts included with each wall.

     Alternate First-Story Installation

    Installation for first-story wood-floor system.Specify taller wall model to allow for floor framingand use load values for installation on concrete

    on pages 12-13.

    DO NOTcut wall or enlarge

    existing holes

    First-Story Wood Floor Installation

    U.S. Patent 8,281,551Canadian Patent 2,489,845

    Blocking/Connection Detail

    (See Detail 10/SSW2 on page 81 for perpendicular blocking where required)

    Solidblocking

    under centerand each

    end of wall

    Drill/notch subfloor toallow nut to sit flushwith underside of wall(Notching of rim joistmay also be required)

    Simpson Strong-Tie® A34 angle

    Place Steel Strong-Wall® shearwall over theanchor bolts and securewith heavy hex nuts(provided). Snug tight fitrequired, do not use animpact wrench.• 1¼ wrench/socketrequired for ¾" nut• 15" wrench/socketrequired for 1" nut

    CNW Nuts and Threaded Rods

    (Included with

    SSW_-1KT)

    SSWAB

    Simpson Strong-Tie®  A34 each side

    Shim asnecessaryfor tight fit

     Attach to top plates or headerwith SDS ¼" x 3½" screws (provided)

    Exterior View of

    Shear-Transfer Plate

    SSW shear-transferplate installs with 10dnails into the rim joistand #14 self-drilling

    screws into theStrong-Wall®

    (Sold separately withSSW__-1KT)

    Simpson Strong-Tie®  A34 each side

    Shear transferby Designer(Simpson Strong-Tie®

    LTP4 shown)

    Rim joist

     S t e

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    Foundation design(size and

     reinforcement)by Designer

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    Steel Strong-Wall ® Shearwalls

    First-Story Wood Floor Systems

    SSW Model

    Seismic2 Wind

     Allowable ASDShear Load V

    (lbs.)

    Drift at Allowable Shear

    (in.)

     Anchor Tension at Allowable Shear4 

    (lbs.)

     Allowable ASDShear Load V

    (lbs.)

    Drift at Allowable Shear

    (in.)

     Anchor Tension at Allowable Shear4 

    (lbs.)

    SSW12x7 525 0.30 6110 525 0.30 6110

    SSW15x7 1385 0.35 11980 1385 0.35 11980

    SSW18x7 1830 0.27 11950 1830 0.27 11950SSW21x7 2100 0.21 11015 2100 0.21 11015

    SSW24x7 2450 0.17 10740 2450 0.17 10740

    SSW12x8 450 0.36 6105 450 0.36 6105

    SSW15x8 1185 0.42 11945 1185 0.42 11945

    SSW18x8 1570 0.33 11950 1570 0.33 11950

    SSW21x8 1955 0.27 11955 1955 0.27 11955

    SSW24x8 2340 0.23 11955 2340 0.23 11955

    SSW12x9 400 0.42 6125 400 0.42 6125

    SSW15x9 1050 0.47 11945 1050 0.47 11945

    SSW18x9 1390 0.38 11945 1390 0.38 11945

    SSW21x9 1735 0.31 11975 1735 0.31 11975

    SSW24x9 2075 0.26 11965 2075 0.26 11965SSW12x10 360 0.48 6140 360 0.48 6140

    SSW15x10 885 0.52 11220 945 0.56 11980

    SSW18x10 1250 0.44 11965 1250 0.44 11965

    SSW21x10 1555 0.33 11955 1555 0.33 11955

    SSW24x10 1860 0.30 11950 1860 0.30 11950

    SSW15x11 780 0.58 10900 855 0.63 11945

    SSW18x11 1135 0.50 11975 1135 0.50 11975

    SSW21x11 1410 0.40 11950 1410 0.40 11950

    SSW24x11 1690 0.34 11970 1690 0.34 11970

    SSW15x12 670 0.63 10230 785 0.74 11985

    SSW18x12 1035 0.55 11935 1035 0.55 11935

    SSW21x12 1290 0.45 11950 1290 0.45 11950SSW24x12 1545 0.38 11960 1545 0.38 11960

    SSW18x13 955 0.60 11945 955 0.60 11945

    SSW21x13 1190 0.50 11960 1190 0.50 11960

    SSW24x13 1425 0.42 11965 1425 0.42 11965

    1. Loads are applicable to first-story raised wood floor installationssupported on concrete or masonry foundations using the

     ASD basic (Section 1605.3.1) or the alternative basic (Section1605.3.2) load combinations. Load values include evaluationof anchor rod compression capacity and do not require furtherevaluation by the Designer.

    2. For seismic designs based on the 2012 IBC using R = 6.5.For other codes, use the seismic coefficients corresponding tolight-frame bearing walls with wood structural panels or sheetsteel panels.

    3. Minimum standard-strength anchor bolts required. See pages29-35 for SSWAB anchor bolt information and anchoragesolutions.

    4. Tabulated anchor tension loads assume no resisting axia l load. Anchor rod tension at design shear load and including the effectof axial load may be determined using the Strong-Wall Selector

     Application or the following equation: T = [(V x h) / B] - P/2 , where:

     T = Anchor rod tension load (lbs.) V = Design shear load (lbs.)h = Strong-Wall® height per page 11 (in.)P = Applied axial load (lbs.)B = Anchor bolt centerline dimension (in.)

    (67" for SSW12, 9 ¼" for SSW15, 12¼" for SSW18,

    15¼" for SSW21, and 18¼" for SSW24)5. Allowable shear loads assume a maximum first-floor joist depth

    of 12". For allowable shear load with joists up to 16 " deep, multiplytable values by 0.93 for SSW12x models and 0.96 for other SSWwidths.

    6. Allowable shear loads are based on 1000 lbs. total uniformlydistributed axial load acting on the entire panel in combination withthe shear load. For allowable shear loads at 2000 lbs. uniformlydistributed axial load, multiply table values by 0.92 for SSW12xmodels, and 0.96 for other SSW widths.

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    Steel Strong-Wall ® Shearwalls

    Balloon Framing on Concrete Foundations

    Simpson Strong-Tie® offers a complete stacked-wall solution for

    balloon-framing applications. The Steel Strong-Wall® option for heights

    up to 20' combines simplified installation with superior performance.

     • Some of the highest loads in the industry

     • Same anchor bolt template as single-story installation

     • Complete kit available to simplify the connection between the walls

    Material & Finish: See page 10.

    Codes: ICC-ES ESR-1679:

    City of L.A. RR25625;

    State of Florida FL5113

    Steel Strong-Wall® Balloon FramingStacked-Wall Product Data – Bottom Walls

    Model No.W

    (in.)H

    (in.)T

    (in.)

     Anchor Bolts

    Qty. Dia. (in.)

    SSW15x8-STK 15 93¼   3 ½   2 1

    SSW15x10-STK 15 117 

    ¼   3 

    ½   2 1

    SSW18x8-STK 18 93 ¼   3 ½   2 1

    SSW18x10-STK 18 117 ¼   3 ½   2 1

    SSW21x8-STK 21 93 

    ¼   3 

    ½   2 1

    SSW21x10-STK 21 117 ¼   3 ½   2 1

    SSW24x8-STK 24 93 

    ¼   3 

    ½   2 1

    SSW24x10-STK 24 117 ¼   3 ½   2 1

    1. Specific wall combinations provided. See load table on page 22.Contact Simpson Strong-Tie for additional wall combinations.

    2. See page 11 for product data on top walls.

    Balloon-Framing Wall Connection KitModel No. Contents

    SSWBF-KT(2) 1" x 25" Threaded Rods F1554 Grade 36(4) Heavy Hex NutsInstallation Instructions

    1. Two heavy hex nuts included with each wall.

    Wood Block-to-Top Plate Connection

    Strong-Wall® Width

    TotalConnectors

    RecommendedConnectors

    15" Wall 4 (2 Each Side)

    Simpson Strong-Tie®

    LTP4 or A35

    18" Wall 4 (2 Each Side)

    21" Wall 6 (3 Each Side)

    24" Wall 6 (3 Each Side)

    1. Alternate connectors with equivalent shear capacity may bespecified by the Designer.

     S t e

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    Stacked-Wall Solution For Balloon Framing

    U.S. Patent 8,281,551; 8,689,518Canadian Patent 2,489,845

    Wood block 

    eliminates theneed for specialheight walls

    Balloon FramingStacked-WallConnector KitModel SSWBF-KT (Order separately)

    Factory installedstacked-wall option -

     To order add“-STK” suffix to

    the model number(Example:SSW18x10-STK)

    Standard SteelStrong-Wall®

    Foundation design(size and

     reinforcement)by Designer

    Top Wall: SSW18x8

    Steel Strong-Wall Nominal Height (ft.)

    Naming Legend

    Width(in.)

    Stacked Wall(For Bottom Walls Only)

    Bottom Wall: SSW18x10-STK 

    Steel Strong-WallWidth(in.) Nominal Height (ft.)

    Suggested Example Specification: SSW18x8 over SSW18x10-STK

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    Steel Strong-Wall ® Shearwalls

    Balloon Framing on Concrete Foundations

    Installation

     • Do not cut the Steel Strong-Wall® or enlarge existing holes, doing so

    will compromise the performance of the wall.

     • Do not use an impact wrench to tighten nuts on the anchor bolts.

     • Maximum top block height between the Steel Strong-Wall and

    top plates is 12". See detail 4/SSW3 on page 84.

     • Full height studs are required for balloon-framed wall installation(by Designer). Two 2x6 minimum each side with 10d nails at 16" o.c.

    Block Height (H)CS16 Nailing (0.148 x 1.5" Nails)

    Into Block Into SSW Nailer Stud

    H ≤ 8" N/A N/A

    8" < H ≤ 10" 8-10dx1 

    ½   8-10dx1½

    10" < H ≤ 12" 10-10dx1 ½   10-10dx1½

    SSWAB1

    Standard SteelStrong-Wall® panel

    Stud Nailing:

    10d at 16" O.C. stud toSSW nailer-stud andstud-to-stud

    Use SSWBF-KTconnection kit to attachstandard wall above to“-STK” model below

    Full height studs arerequired for balloonframed wall installation(by Designer)

    “-STK” SteelStrong-Wall panel

    Place Steel Strong-Wallover the anchor bolts andsecure with heavy hexnuts (provided). Snug tightfit required, do not use animpact wrench.• 15" wrench/socket

    required for 1" nut

    Balloon Framing on Concrete

    Through Wood Floor 

    Installation for first-story wood-floorsystem, specify taller wall model

    to allow for floor framing.

     Top-plate height measuredfrom bottom of Steel Strong-Wall® totop of plates

    Joist or solid blockingbelow full height studs

    Baloon Framing Installation

    U.S. Patent 8,281,551; 8,689,518Canadian Patent 2,489,845

    DO NOTcut wall or enlarge

    existing holes

    Top-of-Wall Connection

    Simpson Strong-Tie® CS16 for block heights

    greater than 8"

    Shear connectorseach side of block 

    LTP4 or A35

     Attach topof wall toblock with¼"x3½" SDSHeavy-DutyConnectorscrews(provided)

    Solid4x or 6x

    shim block 

    Balloon Framing

    Stacked-Wall

    Connection Detail

    Doublenuts

     Additionalstuds notshown forclarity

     All nutsrequire asnug tight fit

    Singlenut

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    Steel Strong-Wall ® Shearwalls

    Balloon Framing on Concrete Foundations

    NominalWall

    Height(ft.)

     ActualStacked

    SSW Height4

    (ft. - in.)

    Bottom WallSSW Model

    Top WallSSW Model

    Seismic2 Wind

     Allowable ASD Shear

    Load V(lbs.)

    Drift at Allowable

    Shear(in.)

     AnchorTension at Allowable

    Shear8 (lbs.)

     Allowable ASD Shear

    Load V(lbs.)

    Drift at Allowable

    Shear(in.)

     AnchorTension at Allowable

    Shear8 (lbs.)

    15-Inch Wide Walls

    15 14 - 5 ¼ SSW15x8-STK SSW15x7 — — — 705 1.00 12465

    16 15 - 6 ½ SSW15x8-STK SSW15x8 — — — 645 1.06 12105

    17 16 - 5 ¼ SSW15x10-STK SSW15x7 — — — 595 1.11 11820

    18 17 - 6 ½ SSW15x10-STK SSW15x8 — — — 555 1.17 11655

    19 18 - 6 ½ SSW15x10-STK SSW15x9 — — — 520 1.23 11505

    20 19 - 6 ½ SSW15x10-STK SSW15x10 — — — 485 1.29 11260

    18-Inch Wide Walls

    15 14 - 5 ¼ SSW18x8-STK SSW18x7 890 0.79 12020 1130 1.00 16105

    16 15 - 6 ½ SSW18x8-STK SSW18x8 825 0.84 11875 1050 1.07 15945

    17 16 - 5 ¼ SSW18x10-STK SSW18x7 770 0.89 11770 980 1.13 15795

    18 17 - 6 ½ SSW18x10-STK SSW18x8 — — — 915 1.20 15585

    19 18 - 6 ½ SSW18x10-STK SSW18x9 — — — 860 1.27 15440

    20 19 - 6 ½ SSW18x10-STK SSW18x10 — — — 810 1.33 15290

    21-Inch Wide Walls

    15 14 - 5 ¼ SSW21x8-STK SSW21x7 1295 0.78 14605 1670 1.00 20000

    16 15 - 6 ½ SSW21x8-STK SSW21x8 1220 0.84 14710 1550 1.07 19770

    17 16 - 5 ¼ SSW21x10-STK SSW21x7 1135 0.89 14520 1445 1.13 19550

    18 17 - 6 ½ SSW21x10-STK SSW21x8 1065 0.95 14425 1350 1.20 19300

    19 18 - 6 ½ SSW21x10-STK SSW21x9 1000 1.00 14285 1270 1.27 19145

    20 19 - 6 ½ SSW21x10-STK SSW21x10 940 1.05 14120 1195 1.33 18930

    24-Inch Wide Walls

    15 14 - 5 ¼ SSW24x8-STK SSW24x7 1680 0.72 16100 2295 1.00 23645

    16 15 - 6 ½ SSW24x8-STK SSW24x8 1630 0.81 16790 2155 1.07 23730

    17 16 - 5 ¼ SSW24x10-STK SSW24x7 1545 0.87 16950 2005 1.13 23405

    18 17 - 6 ½ SSW24x10-STK SSW24x8 1470 0.94 17115 1875 1.20 23130

    19 18 - 6 ½ SSW24x10-STK SSW24x9 1390 1.00 17095 1765 1.27 22960

    20 19 - 6 ½ SSW24x10-STK SSW24x10 1310 1.05 16945 1660 1.33 22685

    1. Allowable shear loads and anchor tension forces are applicable toinstallation on concrete with minimum f'c = 2500 psi using the ASDbasic (Section 1605.3.1) or the alternative basic (Section 1605.3.2)load combinations. Load values include evaluation of bearingstresses on the foundation and do not require further evaluationby the Designer.

    2. For seismic designs based on the 2012 IBC using R = 6.5.For other codes, use the seismic coefficients corresponding to

    light-frame bearing walls with wood structural panels or sheetsteel panels.

    3. Allowable shear, drift, and anchor tension values apply to thenominal wall heights listed and may be linearly interpolatedfor intermediate heights.

    4. Solid shim blocks (12" maximum) shall be used to attain specifiednominal wall height. See detail 4/SSW3 on page 84 for additionaldetails.

    5. Full-height studs are required for balloon framed wall installation,which must be designed for out-of-plane loads in accordance withthe applicable code. Two 2x6 minimum are required on each sideand fastened together with 10d common nails at 16 inches oncenter.

    6. Loads are based on a 1000 lbs. maximum axial load acting on theentire panel in combination with the shear load. For shear loads at2000 lbs. maximum axial load, multiply allowable shears by 0.91

    for SSW15x models; no reduction required for other wall models.7. High-strength anchor bolts are required for anchor tension forces

    exceeding the allowable load for standard-strength bolts tabulatedon pages 29-30. See pages 29-35 for SSWAB anchor boltinformation and anchorage solutions.

    8. Tabulated anchor tension loads assume no resisting axial load.For anchor tension loads at design shear values and including theeffect of axial load, refer to the Strong-Wall Selector Application oruse the equations on page 15. Drifts at lower design shear maybe linearly reduced.

     S t e

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    Steel Strong-Wall ® Shearwalls

    Cumulative Overturning

    Key Consideration inStrong-Wall® ShearwallSpecification ProcessWhen specifying a pre-manufactured shearwall for a project, several

    factors need to be considered, such as load values, seismic/wind

    requirements, wall width and height, wall placement, etc. Cumulative

    Overturning is another critical factor often overlooked in multi-story

    applications.

    Calculating Cumulative Overturning for

    Pre-Manufactured Shearwalls

    Designers are accustomed to accounting for cumulative overturning

    when specifying multi-story, site-built plywood shearwalls. However,

    when specifying pre-manufactured shearwalls, Designers typically

    calculate shear loads based on the building geometry and code

    loading requirements. A wall is then selected based on its ability to

    meet or exceed the required shear load using manufacturer-provided

    allowable shear load tables.What can get lost when considering shear capacity only is that the

    shearwall is not only governed by shear, but also by a combination

    of other limit states, including drift, tension and compression, flexure,

     anchor rod tension, and concrete or wood bearing stress. For single-

    story walls, the allowable shear given in the load tables is the lowest

    value of the various limit states. However, additional care must be

    taken in the analysis of multi-story shearwalls to account for the way

    the loads are distributed over the height of the building.

    Cumulative Overturning and Stacked-Wall Applications

    In multi-story structures, shear and the associated overturning

    forces due to seismic/wind requirements must be carried down to

    the foundation by the building’s lateral force resisting system. These

    forces are cumulative over the height of the building, and shear forcesapplied at the second or third levels of a structure will generate much

    larger base overturning moments than the same shears applied at the

    first story. If cumulative overturning is not considered, the design may

    result in forces several times higher than the capacity of the lower

    wall, anchor bolts and foundation anchorage.

    When specifying stacked shearwall applications, it’s important to

    consider cumulative overturning. The load values for Simpson

    Strong-Tie® stacked Steel Strong-Wall® and Strong-Wall® SB

    applications reflect the impact of cumulative overturning and thus

    appear significantly different than other shearwall manufacturers.

    To learn more about cumulative overturning and

    Simpson Strong-Tie

    ®

     Strong-Wall

    ®

     shearwall testing,visit www.strongtie.com/co.

    Simpson Strong-Tie® Steel Strong-Wall ® 

     shearwall rendered in Finite Element Analysis

    (FEA). When evaluating the performance of

    complex structural components, our engineers

    use this computer simulation to complement

    our full-scale testing program.

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    4

    Steel Strong-Wall ® Shearwalls

    Cumulative Overturning

    *Example calculations: 

    (2nd-Story Shear Load x Total Story Height) + (1st-Floor Shear Load x 1st-Story Height) = Overturning Moment > Baseline Limit of the Lowest Panel

    (3,000 lbs. x 18') + (2,000 lbs. x 9') = 72,000 ft-lbs. > 45,000 ft-lbs.

    (Overturning Moment) ÷ (Moment Arm) = Overturning Force > Baseline Limit of the Lowest Panel (72,000 ft-lbs.) ÷ (2 ft.) = 36,000 lbs. > 22,500 lbs.

    Note: Loads shown are for illustrative purposes only. Redistribution of earthquake loads per building code requirements will compound the effects

    of cumulative overturning.

    2nd-StoryShear Load

    1st-StoryShear Load

    9 Feet

    9 Feet

    5,000 LBS.

    Figure A – ONE-STORY WALL

    Reference ✘ Shear Only

    2,000 LBS.

    3,000 LBS.

    ✔ Shear and Cumulative Overturning

    1,250 LBS.

    1,875 LBS.

    Total BaseShear Reaction Maximum

    Shear Capacity

    5,000 LBS.

    Adequate Designfor Shear

    3,125 LBS.

    Adequate Designfor Shear

    5,000 LBS.

    OverturningMoment Maximum

    Moment Capacity

    45,000 FT-LBS.

    Adequate Designfor Moment

    45,000 FT-LBS.

    ExceedsMoment by 60%*

    72,000 FT-LBS.

    Overturning Force(Assumes 2 ft.Moment Arm) Maximum

    Overturning Force

    22,500 LBS.

    Adequate Designfor Overturning Force

    22,500 LBS.

    ExceedsOverturning Force by 60%*

    36,000 LBS.

    Figure B – TWO-STORY WALL Figure C – TWO-STORY WALL

    Shear only vs. Shear and Cumulative Overturning Analysis The graphic illustration below compares how the total allowable

    shear load is impacted when the effects of cumulative overturning are

    included in the analysis. As a point of reference (Figure A), a one-story,

    nine-foot tall shear wall with a 5,000-lb. lateral load capacity is used.

     The reference wall has a resulting base overturning moment capacity of

    45,000 foot-lbs. and an overturning force of 22,500 lbs. assuming a 2 ft.

    moment arm. As illustrated, if the same base shear is applied over two

    stories, the overturning at the base of the wall exceeds the one-story

    application by 60% (Figure B). When proper consideration of cumulative

    overturning is included in the design, the total allowable shear load on a

    stacked wall is reduced (Figure C).

     S t e

     e l  S t r o n g - W a l l®

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    Steel Strong-Wall ® Shearwalls

    Two-Story Stacked on Concrete Foundations

    Simpson Strong-Tie offers a complete stacked-wall solution for two-story

    applications. This Steel Strong-Wall® Shearwall option combines simplified

    installation with superior performance.

     • Some of the highest loads in the industry and design procedures that account

    for cumulative overturning, see pages 23-24 for more information.

     • Complete concrete-anchorage designs for two-story applications

    (foundation design by Designer)

     • No bearing plates to install, walls can now be placed flush against a corner.

     • Uses the same anchor bolt template as single-story installation.

     • Compression loads transferred by nut/rod – reducing wood crushing under load.

    Material & Finish: See page 10.

    Codes: ICC-ES ESR-1679:

    City of L.A. RR25625;

    State of Florida FL5113

     Two-Story Stacked-Wall Product Data –Bottom Walls

    ModelNo.

    W(in.)

    H(in.)

    T(in.)

     Anchor Bolts Number ofScrews in Top of

    WallQty.Dia.(in.)

    SSW15x8-STK 15 93 ¼   3½   2 1 6

    SSW18x8-STK 18 93 

    ¼   3½   2 1 9

    SSW21x8-STK 21 93 ¼   3½   2 1 12

    SSW24x8-STK 24 93 ¼   3½   2 1 14

    SSW15x9-STK 15 105 

    ¼   3½   2 1 6

    SSW18x9-STK 18 105 ¼   3½   2 1 9

    SSW21x9-STK 21 105 ¼   3½   2 1 12

    SSW24x9-STK 24 105 ¼   3½   2 1 14

    SSW15x10-STK 15 117 

    ¼   3½   2 1 6

    SSW18x10-STK 18 117 ¼   3½   2 1 9

    SSW21x10-STK 21 117 ¼   3½   2 1 12

    SSW24x10-STK 24 117 

    ¼   3½   2 1 14

    SSW15x11-STK 15 129 ¼   5½   2 1 6

    SSW18x11-STK 18 129 ¼   5½   2 1 9

    SSW21x11-STK 21 129 ¼   5½   2 1 12

    SSW24x11-STK 24 129 

    ¼   5½   2 1 14

    SSW15x12-STK 15 141 ¼   5½   2 1 6

    SSW18x12-STK 18 141 ¼   5½   2 1 9

    SSW21x12-STK 21 141 

    ¼   5½   2 1 12

    SSW24x12-STK 24 141 

    ¼   5½   2 1 14

    SSW18x13-STK 18 153 ¼   5½   2 1 9

    SSW21x13-STK 21 153 ¼   5½   2 1 12

    SSW24x13-STK 24 153 

    ¼   5½   2 1 14

    1. See page 11 for product data on top wall.

     Two-Story Stacked-Wall Connection KitWall Width

    (in.)Model

    No.Contents

    15 SSW15-2KT   (1) Shear-Transfer Plate (with#14 self-drilling screws)

    (2) 1"x48" Threaded Rods F1554 Grade 36(6) Heavy Hex NutsInstallation