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DESIGN MANUAL-USA

2— INTERNATIONAL BEAMS | U.S. LVL DESIGN MANUAL | OCTOBER 2016

FRAMED BYQUALITY — BUILT WITHSUCCESS

OUR COMPANY

OUR WARRANTY

OUR GUARANTEE

At International Beams Inc. we take pride in providing our customers with premium quality products and services. Our full range of engineered wood products (EWP) are manufactured to provide consistent, high performance floor and roof systems.

Our technical staff consists of highly trained technical experts available to assist with any design or construction question and to provide full support for our design/layout software.

We warrant our products to be free of manufacturer defects in material and workmanship and capable of supporting loads as specified in our product literature for the life of the structure. In the unlikely event you receive a product that has a manufacturer defect, please contact us to have the problem remedied promptly and courteously.

International Beams Inc. manufactures and tests its products to very high quality control standards. We are confident that our products will provide our customers with consistent high performance when handled and installed in accordance with our Installation Guide. We guarantee that our products are capable of supporting loads as specified in our product literature for the life of the structure.

—3INTERNATIONAL BEAMS | U.S. LVL DESIGN MANUAL | OCTOBER 2016

ENVIRONMENTAL CHOICE

In choosing wood as a construction material, you are choosing a building material that is made from renewable resources. Due to sustained forest practices, the volume of wood in our forests has actually increased by 35% over the last 25 years.

When considering total environmental impact including extraction of raw materials, energy required during manufacturing, emissions from manufacturing operations, and energy efficiency of buildings, IB's group of engineered wood products are among the most environmentally friendly building products available.

See the IB website, www.ibewp.com, for the latest information on meeting green building standards using IB products.

* Construction details reprinted with permission from the APA–The Engineered Wood Association.

INTERNATIONAL BEAMS | U.S. LVL DESIGN MANUAL | OCTOBER 20164—

Engineered wood products, and specifically laminated veneer lumber (LVL), offer advantages over conventional lumber products that result in savings for the builder and long-term performance benefits for the homeowner.

IB MAX-CORE LVL is available in 2.0E - 3100Fb. IB offers depths up to 24 inches and lengths up to 52 feet. Our water resistant coating will protect the LVL during warehousing and construction. The standard natural finish accepts good quality structural adhesives. IB MAX-CORE LVL can be built up on site for two-ply, three-ply and four-ply applications.

IB MAX-CORE LVL is recognized as an innovative solution to the building industry’s floor and roof framing needs.

IB MAX-CORE LVL is made from ultrasonically graded veneers assembled longitudinally (all plys in the same direction) to yield maximum strength. Top grade veneers with few imperfections are used.

Electronic scanners are used to identify defects and a clipper removes them. The high-quality veneers, which offer maximum strength and uniformity, are then laid up with waterproof adhesives and pressed into a billet. A unique combination of heat and pressure ensures a reliable glue line.

IB MAX-CORE LVL can be used as single ply or as assembled beams which are exceptionally strong, straight and solid. IB MAX-CORE LVL is available in custom lengths and depths, further increasing its value to builders.

IB MAX-CORE LVL bending values can be incorporated with a wide variety of design softwares.

IB MAX-CORE LVL is certified under APA program based on ASTM 5456 standard.

ENGINEERED WOOD PRODUCTS

DESIGNED TO PERFORM

RELIABLE DESIGN/ PRODUCT CERTIFICATION

INTERNATIONAL BEAMS | U.S. LVL DESIGN MANUAL | OCTOBER 2016 —5

DESIGN SERVICES

ENGINEERING RESPONSIBILITYPOSITION STATEMENT

Design and related services include, but are not limited to:

• Beam sizing

• Component framing layouts

• Coordination with architects and builders

• On-site review

• Pricing

• Shipping

These services are generally provided by your local IB distributor. There are also local lumber yards, stocking dealers, and design professionals who are familiar with our IB products and may be able to provide some of these design services. If you need help with your design project, please contact IB at [email protected], or contact your local distributor which may be indicated on the back cover of this literature.

IB manufactures and distributes proprietary engineered wood products (EWP).

We have full-time professional engineers on staff. Our engineers are active in the development, manufacture, and marketing of IB products.

Our engineering services are limited to supporting the engineered wood components that we manufacture and distribute (IB MAX-CORE LVL, IB MAX-CORE I-Joist, and

IB MAX-CORE Rimboard). We review and seal component calculations produced on our software, and provide advice on proper installation.

The design professional of record (Engineer or Architect) is responsible for design of the overall structure, global lateral stability, and interaction of various components of the structure. The limited scope of engineering services provided by IB does not replace the need on any project for a design professional of record.


Bending(2) Fb = 3100

Modulus of elasticity apparent(3) E = 2.0

Tension parallel to grain(4) Ft = 2000

Compression perpendicular to grain- joist/beam Fcp = 520

Compression perpendicular to grain - plank Fcp = 200

Compression parallel to grain Fc = 2600

Longitudinal shear perpendicular to glue line – joist/beam Fv = 290

Longitudinal shear parallel to glue line - plank Fv = 180

Specific Gravity – Lateral, Nails in Face(6) SG = 0.46

Specific Gravity – Lateral, Nails in Edge(6) SG = 0.42

Specific Gravity – Lateral, Bolts in Face(7) SG = 0.43

Specific Gravity – Withdrawal, Nails in Face and in Edge(6) SG = 0.40

NOTES:1. Tabulated values are specified strengths for standard term

duration of load. Specified strengths shall be permitted to be adjusted for other load durations as permitted by the code

2. Tabulated bending specified strength (fb) for IB MAX-CORE LVL 2.0E - 3100Fb are based on a reference depth of 12 inches. For other depth, the tabulated bending stress (fb) must be adjusted by a size factor Kzb

WHERE:Kzb= (12/d) 0.16

3. The deflection of a simple span beam with a uniformly distributed load is calculated as follows

Δ= 270 WL4

Ebd3

WHERE:D = total deflection (in) E = modulus of elasticity (psi)W = applied uniform load (lb/ft) B = member thickness (in)L = design span (ft) D = member depth (in)

4. Tabulated tension parallel to grain specified strength (Ft) is applicable to lengths up to 20 feet.

For lengths greater than 20 feet, the tabulated tension to grain specified strength (Ft) must be adjusted by the length fator Kzt

WHERE:Kzt = (20/L) 0.146

L = length of the member (Ft)

5. Applicable to all tabulated values except Specific Gravity (SG)6. Applicable for nailed connection7. Applicable for bolted connection

1 3/4"

3 1/2" to 24"

IB MAX-CORE LVL (LAMINATED VENEER LUMBER) 2.0E - 3100Fb

DESIGN PROPERTIES IB MAX-CORE LVL 2.0E - 3100Fb


HANDLING, STORAGE & USAGE GUIDELINES

IB MAX-CORE LVL INSTALLATION DETAILS

1. Keep IB MAX-CORE LVL dry.

2. Unload products carefully by lifting. Support the bundles to reduce excessive bowing. Individual products should be handled in a manner which prevents physical damage during measuring, cutting, erection, etc.

3. Keep stored in wrapped and strapped bundles, stacked no more than 10’ high. Support and separate bundles with 2 x 4 (or larger) stickers spaced no more than 8’ apart. Keep stickers out of mud and water. Align stickers vertically.

4. Product must not be stored in contact with ground, or have prolonged exposure to the weather. Protect product from sun and water until ready to use. Slippery when wet.

5. Use forklifts and cranes carefully to avoid damaging product. Use fabric slings when hoisting by crane.

6. If damaged products are encountered, please email IB at [email protected], call 844.IB.BEAMS or contact your local distributor.

Provide specified or prescriptive bearing length

Framing details such as joists and sheathingmust be provided to prevent beam from twisting or rotating at support

Side loads are notrecommended forbeams over 5 1/4" wide (three 1 3/4" plies) unless equally appliedto both faces

Framing is appliedto sides of the beam

Provide specifiedbearing length

Provide specifiedor prescriptivebearing length

Continuous plate

Rimboard

WINDOW / DOOR HEADER

STEEL COLUMN & WOOD COLUMN

WINDOW / DOOR HEADER

SIDE LOADED BEAM


1. Use 2 rows of nails for depths to 12”. Use 3 rows of nails for depths greater than 12” up to 18”. Use 4 rows of nails for depths greater than 18” up to 24”.

2. 16d box (3 ½” x 0.135”→) or common (3 ½” x 0.162”) nails shall be used for 1 ¾” plies. 16d sinkers (3 ½” x 0.148”→) may be used for 1 ¾ plies provided the nails are driven alternating from each face (see note 3).

3. For detail A or when attaching the first two plies for details B and C (optional), the nails may be driven all from one face or alternating from both faces. If the nails do not fully penetrate the second ply, then the nails shall be driven from both faces.

4. When driving nails from each face, alternate every other nail in each row.

MULTIPLE MEMBER CONNECTION

DETAIL A Maximum 2-PLY

DETAIL B Maximum 3-PLY beams

Top Loaded Beam – Nail ConnectionMinimum nail sizes:1 ¾” & 2” plies- 16d box (3.5” x 0.135”→)1 ½ plies – 10d box (3” x 0.128”→)

Two rows for depths up to 12”Three rows for depths up to 18”

Framing is applied to top of the beamso that each ply carries an equal load

12” OC

5. For details C and D, it is permissible to nail the plies together before bolting or driving Simpson® SDS or SDW (or equal) screws. Nail two plies together then nail one additional ply to each side.

6. Beams wider than 5 ½” shall be top-loaded or side-loaded from both sides to prevent rotation. Consult a professional engineer for other options.

7. Other nail, screw or bolt configurations are possible. Consult International Beams Inc. or a professional engineer.

DETAIL C Maximum 4-PLY beams

DETAIL D Maximum 4-PLY beams

Top Loaded Beam – Bolted connectionFraming is applied to top of the beamso that each ply carries an equal load

Nails are permissible but NOT required.See notes for Connection Assemblies.

½” – diameterASTM grade A-307 (or better) bolts.Use washers on both faces.

3”

24"


BEAM HOLE DETAILS

NOTES:1. The Allowed Hole Zone in this chart is suitable for Uniformly loaded beams using maximum loads

for any tables listed. For other load conditions or hole configurations, please contact IB.2. If more than one hole is to be cut in the beam, the length of the uncut beam between holes must

be a minimum of twice the diameter of the largest hole.3. Rectangular holes are not allowed.4. Holes in cantilevers require additional analysis.

Beam Depths 5 1/2" 7 1/4" 9 1/4" 11 1/4" 11 7/8" 14" 16" 18" 24"

Maximum Hole Diameter 1 1/8" 1 1/2" 2" 2" 2" 2" 2" 2" 2"

1 foot

1/3 Beam Depth

1 footMaximum 2x Diameter

of larger hole

1/3 1/31/3 Span Length

Clear Span


PRODUCT SPECIFICATIONS & DESIGN VALUES

IB MAX-CORE LVL 2.0E - 3100Fb – ALLOWABLE DESIGN PROPERTIES

NOTES:

1. The design properties table has been developed using the provisions of National Design Specification® for Wood Construction 2015 Edition and the allowable stress design properties provided in APA Product Report® PR-L318.

2. The design properties are applicable to loading in a beam orientation with lateral support at bearing points and continuous lateral support along the compression edge of the beam.

3. Design properties are based on dry service conditions only.

4. All single ply beams are limited to a depth of 14’’ maximum. Plies that are 16’’ or deeper must be used in multiple-ply applications.

5. The design properties table does not include the repetitive load factor (Cr=1.04) for beams with two plies or more.

6. The design properties table does not include the effect of allowable holes.

7. Stiffness values (EI) are based on the apparent modulus of elasticity (E=2.0x106 psi) and the effect of shear deformation has been included.

DepthMoment (ft - lbs) Shear Moment of Inertia

(IN4)EI

106 IN2 lbsWeight (lbs/ft)100% 115% 100% 115%

5 1/2" 2,770 3,185 1,860 2,139 24 48 2.4

7 1/4" 4,492 5,165 2,452 2,820 55 111 3.1

9 1/4" 6,880 7,912 3,129 3,599 115 230 4.0

11 1/4" 9,691 11,144 3,806 4,377 207 415 4.8

11 7/8" 10,652 12,250 4,017 4,620 244 488 5.1

14" 14,209 16,341 4,736 5,447 400 800 6.0

16" 17,950 20,642 5,413 6,225 597 1,194 6.9

18" 22,059 25,368 6,090 7,003 850 1,701 7.7

24" 36,494 41,969 8,120 9,338 2,016 4,032 10.3


NOTES FOR USE OF ALLOWABLE UNIFORM FLOOR AND ROOF LOADS TABLES

1. The load tables have been developed using the provisions of National Design Specification® for Wood Construction 2015 Edition and the allowable stress design properties provided in APA Product Report® PR-L318.

2. The load tables are not intended to substitute the provision of services by a structural engineer according to local project requirements. For any beam configurations that do not correspond to the assumptions of this table, the services of a structural engineer may be required.

3. The load tables are based on the maximum uniform load for floor (100% duration) or roof (115% duration) applications in residential buildings, using the most restrictive of either simple spans or continuous spans of equal length. The span length is measured from the center of the supports. The loads shown in the tables may be added to the self-weight of the beam.

4. IB MAX-CORE LVL must only be used in dry service conditions where the moisture content of the LVL will be maintained at 16% or less.

5. IB MAX-CORE LVL require lateral support at beam bearing points and continuous lateral support of the compression edge of the beam.

6. All single ply beams are limited to a depth of 14’’ maximum. Plies that are 16’’ or deeper must be used in multiple-ply applications.

7. Deflection limits must be verified with local building code and project requirements. The deflection limits used in the tables for floors (100% duration) are L/360 for live load and L/240 for total load. The deflection limits used in the tables for roofs (115% duration) are L/240 for live load and L/180 for total load.

8. To use the tables, the user must check that both the live load and the total load values listed are not exceeded for a given span. Where the symbol “ * ” is shown for the allowable live load, the total load governs the design, unless the user has chosen a more stringent limit for the live load deflection (see notes 9 and 10).

9. To apply live load deflection limits of L/480 or L/600 for floor applications (100% duration), multiply the allowable load in the Live Load L/360 row by 0.75 or 0.5 respectively.

10. To apply live load deflection limits of L/360 or L/480 for roof applications (115% duration), multiply the allowable load in the Live Load L/240 row by 0.67 or 0.5 respectively.

11. If the actual span of the beam falls in between two span lengths in the SPAN column, use the allowable loads given for the greater span length.

12. The load tables include the repetitive load factor (Cr=1.04) for beams with three plies or more.

13. The load tables include the effect of allowable holes in the middle 1/3 of the depth and the middle 1/3 of the span, all according to the guidelines provided in this product manual.

14. The bearing conditions in the load table assume bearing across the full width of the beam, and a bearing material that has a bearing strength equivalent or greater than IB MAX-CORE LVL (520 psi). The load tables include an assumed maximum available bearing length of 4 ½’’ at the exterior supports of the beam.

15. For applications where the total load does not exceed the value given in the table, the length of bearing values may be reduced proportionately.


ALLOWABLE UNIFORM FLOOR LOADS (PLF) – 100%(Can be applied to the beam in addition to its own weight)

IB MAX-CORE LVL - ALLOWABLE UNIFORM FLOOR LOADS (PLF) - 100%

Span (ft) Condition

1 PLY - 1 3/4"

5 1/2" 7 1/4" 9 1/4" 11 1/4" 11 7/8" 14"

6Live Load l/360

Total Load End / Int. Bearing

332496

1.7/4.2

762776

2.6/6.5

*1,046

3.5/8.7

*1,348

4.5/11.2

*1,450

4.5/11.3

*1,477

4.5/11.3

8Live Load l/360


140208

1.5/3

321479

2.2/5.4

667736

3.3/8.2

*932

4.2/10.3

*996

4.5/11.1

*1,106

4.5/11.3

10Live Load l/360


71105

1.5/3

164243

1.5/3.4

341509

2.9/7.1

615711

4/9.9

723758

4.2/10.5

*883

4.5/11.3

11Live Load l/360


5478

1.5/3

123182

1.5/3

256381

2.4/5.9

462603

3.7/9.2

543664

4.1/10.2

*803

4.5/11.3

12Live Load l/360


4160

1.5/3

95139

1.5/3

197292

2/4.9

356506

3.4/8.5

418557

3.8/9.3

686735

4.5/11.3

13Live Load l/360


74109

1.5/3

155229

1.7/4.2

280415

3.1/7.6

329474

3.5/8.6

539633

4.5/11.3

14Live Load l/360


6086

1.5/3

124183

1.5/3.6

224331

2.6/6.5

263390

3.1/7.7

432545

4.3/10.6

15Live Load l/360


4870

1.5/3

101148

1.5/3.2

182268

2.3/5.7

214316

2.7/6.7

351 474

4/9.9

16Live Load l/360


83121

1.5/3

1502202/5

176259

2.4/5.9

289 415

3.8/9.3

17Live Load l/360


69100

1.5/3

125183

1.8/4.4

147215

2.1/5.2

241 356

3.4/8.5

18Live Load l/360


5884

1.5/3

105153

1.6/4

124181

1.9/4.7

203 299

3.1/7.6

19Live Load l/360


4970

1.5/3

89129

1.5/3.6

105153

1.7/4.2

172 253

2.8/6.8

20Live Load l/360


76110

1.5/3.2

90130

1.5/3.8

148 216

2.5/6.2

22Live Load l/360


5781

1.5/3

6796

1.5/3.1

111 161

2.1/5.1

24Live Load l/360


52 73

1.5/3

85 122

1.7/4.3

26Live Load l/360


67 95

1.5/3.7

28Live Load l/360


54 75

1.5/3.2

* Refer to notes on page 21.





Span (ft) Condition

2 PLY - 3 1/2"

5 1/2" 7 1/4" 9 1/4" 11 1/4" 11 7/8" 14" 16" 18" 24"

6Live Load l/360


665989

1.7/4.2

1,5241,547

2.6/6.5

*2,085

3.5/8.7

*2,687

4.5/11.2

*2,900

4.5/11.3

*2,954

4.5/11.3

*2,952

4.5/11.3

*2,950

4.5/11.3

* 2,945

4.5/11.3

8Live Load l/360


280411

1.5/3

643952

2.2/5.4

1,3351,464

3.3/8.2

*1,854

4.2/10.3

*1,993

4.5/11.1

*2,212

4.5/11.3

*2,211

4.5/11.3

*2,209

4.5/11.3

* 2,204

4.5/11.3

10Live Load l/360


143206

1.5/3

329481

1.5/3.4

6831,010

2.9/7.1

1,2301,4134/9.9

1,4471,517

4.2/10.5

*1,767

4.5/11.3

*1,766

4.5/11.3

*1,764

4.5/11.3

* 1,759

4.5/11.3

11Live Load l/360


108152

1.5/3

247358

1.5/3

513755

2.4/5.9

9241,198

3.7/9.2

1,0871,328

4.1/10.2

*1,606

4.5/11.3

*1,604

4.5/11.3

*1,602

4.5/11.3

* 1,597

4.5/11.3

12Live Load l/360


83115

1.5/3

190273

1.5/3

395577

2/4.9

7121,003

3.4/8.5

8371,114

3.8/9.3

1,372 1,471

4.5/11.3

*1,469

4.5/11.3

*1,467

4.5/11.3

* 1,462

4.5/11.3

13Live Load l/360


6588

1.5/3

149212

1.5/3

311451

1.7/4.2

560820

3.1/7.6

658948

3.5/8.6

1,0791,266

4.5/11.3

*1,355

4.5/11.3

*1,353

4.5/11.3

* 1,348

4.5/11.3

14Live Load l/360


5269

1.5/3

120167

1.5/3

249358

1.5/3.6

448653

2.6/6.5

527780

3.1/7.7

8641,090

4.3/10.6

*1,257

4.5/11.3

*1,255

4.5/11.3

* 1,250

4.5/11.3

15Live Load l/360


97134

1.5/3

202288

1.5/3.2

364527

2.3/5.7

428633

2.7/6.7

702948

4/9.9

1,0481,172

4.5/11.3

*1,171

4.5/11.3

* 1,166

4.5/11.3

16Live Load l/360


80108

1.5/3

166234

1.5/3

3004312/5

353519

2.4/5.9

578831

3.8/9.3

8641,052

4.5/11.3

*1,097

4.5/11.3

* 1,091

4.5/11.3

17Live Load l/360


6788

1.5/3

139193

1.5/3

250356

1.8/4.4

294431

2.1/5.2

482712

3.4/8.5

720930

4.5/11.1

*1,031

4.5/11.3

* 1,026

4.5/11.3

18Live Load l/360


117160

1.5/3

210297

1.6/4

248362

1.9/4.7

406598

3.1/7.6

606828

4.2/10.5

864973

4.5/11.3

* 968

4.5/11.3

19Live Load l/360


99133

1.5/3

179249

1.5/3.6

210306

1.7/4.2

345506

2.8/6.8

516742

4/9.9

734913

4.5/11.3

* 916

4.5/11.3

20Live Load l/360


85112

1.5/3

153211

1.5/3.2

180261

1.5/3.8

296432

2.5/6.2

442650

3.7/9.2

629822

4.5/11.3

* 869

4.5/11.3

22Live Load l/360


6480

1.5/3

115154

1.5/3

135193

1.5/3.1

222322

2.1/5.1

332485

3.1/7.6

473667

4.2/10.5

* 788

4.5/11.3

24Live Load l/360


89114

1.5/3

104146

1.5/3

171245

1.7/4.3

256370

2.6/6.4

364531

3.7/9.1

* 721

4.5/11.3

26Live Load l/360


*85

1.5/3

82113

1.5/3

134190

1.5/3.7

201288

2.2/5.4

286414

3.1/7.7

* 664

4.5/11.3

28Live Load l/360


6588

1.5/3

108150

1.5/3.2

161228

1.9/4.7

229329

2.7/6.7

544 615

4.5/11.3





Span (ft) Condition

3 PLY - 5 1/4"

5 1/2" 7 1/4" 9 1/4" 11 1/4" 11 7/8" 14" 16" 18" 24"

6Live Load l/360


998 1,476

1.7/4.2

* 2,311

2.6/6.5

* 3,116

3.5/8.7

* 4,016

4.5/11.2

* 4,351

4.5/11.3

* 4,431

4.5/11.3

* 4,428

4.5/11.3

* 4,426

4.5/11.3

* 4,418

4.5/11.3

8Live Load l/360


421 610

1.5/3

964 1,419

2.2/5.4

2,003 2,184

3.3/8.2

* 2,767

4.2/10.3

* 2,990

4.5/11.1

* 3,319

4.5/11.3

* 3,316

4.5/11.3

* 3,314

4.5/11.3

* 3,306

4.5/11.3

10Live Load l/360


215 302

1.5/3

493 713

1.5/3.4

1,025 1,503

2.9/7.1

1,845 2,106 4/9.9

2,170 2,276

4.2/10.5

* 2,651

4.5/11.3

* 2,649

4.5/11.3

* 2,646

4.5/11.3

* 2,639

4.5/11.3

11Live Load l/360


162 222

1.5/3

371 528

1.5/3

770 1,120

2.4/5.9

1,386 1,783

3.7/9.2

1,630 1,992

4.1/10.2

* 2,409

4.5/11.3

* 2,406

4.5/11.3

* 2,403

4.5/11.3

* 2,396

4.5/11.3

12Live Load l/360


124 166

1.5/3

285 401

1.5/3

593 855

2/4.9

1,068 1,491

3.4/8.5

1,256 1,671

3.8/9.3

2,058 2,206

4.5/11.3

* 2,204

4.5/11.3

* 2,201

4.5/11.3

* 2,194

4.5/11.3

13Live Load l/360


98 126

1.5/3

224 309

1.5/3

466 665

1.7/4.2

840 1,217

3.1/7.6

988 1,422

3.5/8.6

1,619 1,899

4.5/11.3

* 2,033

4.5/11.3

* 2,030

4.5/11.3

* 2,022

4.5/11.3

14Live Load l/360


* 96

1.5/3

180 242

1.5/3

373 525

1.5/3.6

672 965

2.6/6.5

791 1,171

3.1/7.7

1,296 1,635

4.3/10.6

* 1,886

4.5/11.3

* 1,883

4.5/11.3

* 1,876

4.5/11.3

15Live Load l/360


* 74

1.5/3

146 191

1.5/3

303 420

1.5/3.2

546 777

2.3/5.7

643 949

2.7/6.7

1,053 1,422 4/9.9

1,573 1,759

4.5/11.3

* 1,756

4.5/11.3

* 1,749

4.5/11.3

16Live Load l/360


120 153

1.5/3

250 340

1.5/3

450 632 2/5

529 779

2.4/5.9

868 1,247

3.8/9.3

1,296 1,578

4.5/11.3

* 1,645

4.5/11.3

* 1,637

4.5/11.3

17Live Load l/360


* 123

1.5/3

208 277

1.5/3

375 520

1.8/4.4

441 647

2.1/5.2

724 1,068

3.4/8.5

1,080 1,395

4.5/11.1

* 1,547

4.5/11.3

* 1,539

4.5/11.3

18Live Load l/360


* 99

1.5/3

175 228

1.5/3

316 431

1.6/4

372 543

1.9/4.7

609 897

3.1/7.6

910 1,242

4.2/10.5

1,296 1,460

4.5/11.3

* 1,452

4.5/11.3

19Live Load l/360


* 80

1.5/3

149 188

1.5/3

269 360

1.5/3.6

316 459

1.7/4.2

518 760

2.8/6.8

774 1,113 4/9.9

1,102 1,370

4.5/11.3

* 1,374

4.5/11.3

20Live Load l/360


* 156

1.5/3

230 303

1.5/3.2

271 391

1.5/3.8

444 649

2.5/6.2

663 975

3.7/9.2

944 1,234

4.5/11.3

* 1,304

4.5/11.3

22Live Load l/360


* 109

1.5/3

173 216

1.5/3

203 290

1.5/3.1

334 483

2.1/5.1

498 727

3.1/7.6

709 1,016

4.2/10.5

* 1,182

4.5/11.3

24Live Load l/360


* 75

1.5/3

* 157

1.5/3

157 220

1.5/3

257 368

1.7/4.3

384 555

2.6/6.4

546 797

3.7/9.1

* 1,081

4.5/11.3

26Live Load l/360


* 114

1.5/3

123 170

1.5/3

202 285

1.5/3.7

302 432

2.2/5.4

430 622

3.1/7.7

* 996

4.5/11.3

28Live Load l/360


* 83

1.5/3

98 133

1.5/3

162 225

1.5/3.2

241 342

1.9/4.7

344 493

2.7/6.7

816 922

4.5/11.3





Span (ft) Condition

4 PLY - 7"

7 1/4" 9 1/4" 11 1/4" 11 7/8" 14" 16" 18" 24"

6Live Load l/360


* 3,069

2.6/6.5

* 4,139

3.5/8.7

* 5,336

4.5/11.2

* 5,801

4.5/11.3

* 5,908

4.5/11.3

* 5,905

4.5/11.3

* 5,901

4.5/11.3

* 5,891

4.5/11.3

8Live Load l/360


1,286 1,880

2.2/5.4

2,671 2,897

3.3/8.2

* 3,671

4.2/10.3

* 3,987

4.5/11.1

* 4,425

4.5/11.3

* 4,422

4.5/11.3

* 4,418

4.5/11.3

* 4,408

4.5/11.3

10Live Load l/360


658 938

1.5/3.4

1,367 1,988 2.9/7.1

2,460 2,789 4/9.9

2,894 3,034

4.2/10.5

* 3,535

4.5/11.3

* 3,532

4.5/11.3

* 3,528

4.5/11.3

* 3,518

4.5/11.3

11Live Load l/360


494 692

1.5/3

1,027 1,478

2.4/5.9

1,848 2,358

3.7/9.2

2,174 2,656

4.1/10.2

* 3,212

4.5/11.3

* 3,208

4.5/11.3

* 3,205

4.5/11.3

* 3,195

4.5/11.3

12Live Load l/360


381 522

1.5/3

791 1,124 2/4.9

1,424 1,969

3.4/8.5

1,674 2,228

3.8/9.3

2,744 2,942

4.5/11.3

* 2,939

4.5/11.3

* 2,935

4.5/11.3

* 2,925

4.5/11.3

13Live Load l/360


299 400

1.5/3

622 871

1.7/4.2

1,120 1,603

3.1/7.6

1,317 1,896

3.5/8.6

2,158 2,532

4.5/11.3

* 2,710

4.5/11.3

* 2,707

4.5/11.3

* 2,697

4.5/11.3

14Live Load l/360


240 310

1.5/3

498 684

1.5/3.6

896 1,268

2.6/6.5

1,054 1,561

3.1/7.7

1,728 2,180

4.3/10.6

* 2,515

4.5/11.3

* 2,511

4.5/11.3

* 2,501

4.5/11.3

15Live Load l/360


* 243

1.5/3

405 545

1.5/3.2

729 1,017

2.3/5.7

857 1,266 2.7/6.7

1,405 1,896 4/9.9

2,097 2,345

4.5/11.3

* 2,342

4.5/11.3

* 2,332

4.5/11.3

16Live Load l/360


* 191

1.5/3

333 438

1.5/3

600 824 2/5

706 1,039

2.4/5.9

1,157 1,663

3.8/9.3

1,728 2,104

4.5/11.3

* 2,194

4.5/11.3

* 2,183

4.5/11.3

17Live Load l/360


* 151

1.5/3

278 354

1.5/3

500 674

1.8/4.4

589 863

2.1/5.2

965 1,424

3.4/8.5

1,440 1,860

4.5/11.1

* 2,063

4.5/11.3

* 2,052

4.5/11.3

18Live Load l/360


* 120

1.5/3

* 288

1.5/3

421 556

1.6/4

496 724

1.9/4.7

813 1,196

3.1/7.6

1,213 1,657

4.2/10.5

1,728 1,946

4.5/11.3

* 1,936

4.5/11.3

19Live Load l/360


* 94

1.5/3

* 236

1.5/3

358 461

1.5/3.6

421 612

1.7/4.2

691 1,013

2.8/6.8

1,032 1,484 4/9.9

1,469 1,826

4.5/11.3

* 1,832

4.5/11.3

20Live Load l/360


* 74

1.5/3

* 193

1.5/3

307 384

1.5/3.2

361 522

1.5/3.8

592 865

2.5/6.2

884 1,300

3.7/9.2

1,259 1,645

4.5/11.3

* 1,738

4.5/11.3

22Live Load l/360


* 129

1.5/3

* 270

1.5/3

271 387

1.5/3.1

445 644

2.1/5.1

664 970

3.1/7.6

946 1,354

4.2/10.5

* 1,577

4.5/11.3

24Live Load l/360


* 85

1.5/3

* 190

1.5/3

209 293

1.5/3

343 490

1.7/4.3

512 740

2.6/6.4

729 1,063 3.7/9.1

* 1,442

4.5/11.3

26Live Load l/360


* 133

1.5/3

164 226

1.5/3

269 380

1.5/3.7

402 576

2.2/5.4

573 829

3.1/7.7

* 1,328

4.5/11.3

28Live Load l/360


* 91

1.5/3

131 177

1.5/3

216 300

1.5/3.2

322 456

1.9/4.7

459 658

2.7/6.7

1,088 1,230

4.5/11.3


ALLOWABLE UNIFORM ROOF LOADS (PLF) – 115% (SNOW)(Can be applied to the beam in addition to its own weight)


Span (ft) Condition

1 PLY - 1 3/4"

5 1/2" 7 1/4" 9 1/4" 11 1/4" 11 7/8" 14"

6Live Load l/240


499 647

2.2/5.4

* 893

3/7.4

* 1,204 4/10

* 1,478

4.5/11.3

* 1,478

4.5/11.3

* 1,477

4.5/11.3

8Live Load l/240


210 278

1.5/3.1

482 610

2.7/6.8

* 847

3.8/9.4

* 1,072

4.5/11.3

* 1,107

4.5/11.3

* 1,106

4.5/11.3

10Live Load l/240


107 141

1.5/3

246 326

1.9/4.6

512 597

3.4/8.3

* 819

4.5/11.3

* 873

4.5/11.3

* 883

4.5/11.3

11Live Load l/240


81 105

1.5/3

185 244

1.5/3.8

385 493

3.1/7.6

* 695

4.3/10.6

* 764

4.5/11.3

* 803

4.5/11.3

12Live Load l/240


62 80

1.5/3

142 187

1.5/3.2

296 391

2.7/6.6

534 583

3.9/9.7

628 641

4.3/10.7

* 735

4.5/11.3

13Live Load l/240


49 63

1.5/3

112 146

1.5/3

233 307

2.3/5.6

420 496

3.6/9

494 545

4/9.9

* 678

4.5/11.3

14Live Load l/240


90 116

1.5/3

186 245

2/4.8

336 427

3.4/8.4

395 469

3.7/9.2

* 627

4.5/11.3

15Live Load l/240


73 94

1.5/3

151 198

1.7/4.2

273 359

3.1/7.6

321 408

3.5/8.6

526 546

4.5/11.3

16Live Load l/240


60 77

1.5/3

125 163

1.5/3.7

225 295

2.7/6.7

264 348

3.2/7.8

434 479

4.3/10.7

17Live Load l/240


50 63

1.5/3

104 135

1.5/3.3

187 245

2.4/5.9

220 289

2.8/6.9

362 423

4.1/10.1

18Live Load l/240


87 113

1.5/3

158 206

2.1/5.3

186 243

2.5/6.2

304 377

3.8/9.5

19Live Load l/240


74 95

1.5/3

134 174

1.9/4.7

158 205

2.3/5.6

259 338

3.6/9

20Live Load l/240


64 81

1.5/3

115 149

1.7/4.3

135 175 2/5

222 290

3.3/8.2

22Live Load l/240


48 60

1.5/3

86 110

1.5/3.5

101 130

1.7/4.2

167 216

2.7/6.8

24Live Load l/240


66 84

1.5/3

78 99

1.5/3.5

128 165

2.3/5.7

26Live Load l/240


52 65

1.5/3

61 77

1.5/3

101 128

2/4.9

28Live Load l/240


49 60

1.5/3

81 102

1.7/4.2






Span (ft) Condition

2 PLY - 3 1/2"

5 1/2" 7 1/4" 9 1/4" 11 1/4" 11 7/8" 14" 16" 18" 24

6Live Load l/240


998 1,290

2.2/5.4

* 1,781 3/7.4

* 2,400 4/10

* 2,947

4.5/11.3

* 2,956

4.5/11.3

* 2,954

4.5/11.3

* 2,952

4.5/11.3

* 2,950

4.5/11.3

* 2,945

4.5/11.3

8Live Load l/240


421 552

1.5/3.1

964 1,214

2.7/6.8

* 1,686

3.8/9.4

* 2,135

4.5/11.3

* 2,214

4.5/11.3

* 2,212

4.5/11.3

* 2,211

4.5/11.3

* 2,209

4.5/11.3

* 2,204

4.5/11.3

10Live Load l/240


215 278

1.5/3

493 646

1.9/4.6

1,025 1,186

3.4/8.3

* 1,628

4.5/11.3

* 1,746

4.5/11.3

* 1,767

4.5/11.3

* 1,766

4.5/11.3

* 1,764

4.5/11.3

* 1, 759

4.5/11.3

11Live Load l/240


162 206

1.5/3

371 482

1.5/3.8

770 978

3.1/7.6

* 1,380

4.3/10.6

* 1,528

4.5/11.3

* 1,606

4.5/11.3

* 1,604

4.5/11.3

* 1,602

4.5/11.3

* 1,597

4.5/11.3

12Live Load l/240


124 157

1.5/3

285 368

1.5/3.2

593 775

2.7/6.6

1,068 1,157

3.9/9.7

1,256 1,283

4.3/10.7

* 1,471

4.5/11.3

* 1,469

4.5/11.3

* 1,467

4.5/11.3

* 1,462

4.5/11.3

13Live Load l/240


98 121

1.5/3

224 287

1.5/3

466 606

2.3/5.6

840 983

3.6/9

988 1,091 4/9.9

* 1,357

4.5/11.3

* 1,355

4.5/11.3

* 1,353

4.5/11.3

* 1,348

4.5/11.3

14Live Load l/240


78 95

1.5/3

180 227

1.5/3

373 482

2/4.8

672 845

3.4/8.4

791 939

3.7/9.2

* 1,255

4.5/11.3

* 1,257

4.5/11.3

* 1,255

4.5/11.3

* 1,250

4.5/11.3

15Live Load l/240


63 75

1.5/3

146 182

1.5/3

303 389

1.7/4.2

546 710

3.1/7.6

643 817

3.5/8.6

1,053 1,092

4.5/11.3

* 1,172

4.5/11.3

* 1,171

4.5/11.3

* 1,166

4.5/11.3

16Live Load l/240


120 148

1.5/3

250 318

1.5/3.7

450 581

2.7/6.7

529 696

3.2/7.8

868 958

4.3/10.7

* 1,098

4.5/11.3

* 1,097

4.5/11.3

* 1,091

4.5/11.3

17Live Load l/240


100 121

1.5/3

208 262

1.5/3.3

375 481

2.4/5.9

441 579

2.8/6.9

724 847

4.1/10.1

* 1,033

4.5/11.3

* 1,031

4.5/11.3

* 1,026

4.5/11.3

18Live Load l/240


84 100

1.5/3

175 218

1.5/3

316 402

2.1/5.3

372 486

2.5/6.2

609 754

3.8/9.5

910 954

4.5/11.3

* 973

4.5/11.3

* 968

4.5/11.3

19Live Load l/240


* 83

1.5/3

149 183

1.5/3

269 339

1.9/4.7

316 411

2.3/5.6

518 676

3.6/9

774 855

4.5/11.3

* 921

4.5/11.3

* 916

4.5/11.3

20Live Load l/240


* 69

1.5/3

128 155

1.5/3

230 288

1.7/4.3

271 351 2/5

444 580

3.3/8.2

663 770

4.4/10.8

* 874

4.5/11.3

* 869

4.5/11.3

22Live Load l/240


96 112

1.5/3

173 211

1.5/3.5

203 261

1.7/4.2

334 433

2.7/6.8

498 634

4/9.8

709 781

4.5/11.3

* 788

4.5/11.3

24Live Load l/240


* 83

1.5/3

133 158

1.5/3

157 199

1.5/3.5

257 331

2.3/5.7

384 498

3.4/8.5

546 654

4.5/11.3

* 721

4.5/11.3

26Live Load l/240


* 120

1.5/3

123 154

1.5/3

202 257

2/4.9

302 389

2.9/7.2

430 555

4.1/10.2

* 664

4.5/11.3

28Live Load l/240


* 92

1.5/3

98 121

1.5/3

162 204

1.7/4.2

241 308

2.5/6.3

344 443

3.6/8.9

* 615

4.5/11.3


(Can be applied to the beam in addition to its own weight)



Span (ft) Condition

3 PLY - 5 1/4"

5 1/2" 7 1/4" 9 1/4" 11 1/4" 11 7/8" 14" 16" 18" 24"

6Live Load l/240


1,497 1,929

2.2/5.4

* 2,662 3/7.4

* 3,588 4/10

* 4,406

4.5/11.3

* 4,434

4.5/11.3

* 4,431

4.5/11.3

* 4,428

4.5/11.3

* 4,426

4.5/11.3

* 4,418

4.5/11.3

8Live Load l/240


631 821

1.5/3.1

1,447 1,812

2.7/6.8

* 2,517

3.8/9.4

* 3,189

4.5/11.3

* 3,321

4.5/11.3

* 3,319

4.5/11.3

* 3,316

4.5/11.3

* 3,314

4.5/11.3

* 3,306

4.5/11.3

10Live Load l/240


323 410

1.5/3

740 960

1.9/4.6

1,538 1,768

3.4/8.3

* 2,428

4.5/11.3

* 2,619

4.5/11.3

* 2,651

4.5/11.3

* 2,649

4.5/11.3

* 2,646

4.5/11.3

* 2,639

4.5/11.3

11Live Load l/240


243 303

1.5/3

556 714

1.5/3.8

1,156 1,455

3.1/7.6

* 2,056

4.3/10.6

* 2,293

4.5/11.3

* 2,409

4.5/11.3

* 2,406

4.5/11.3

* 2,403

4.5/11.3

* 2,396

4.5/11.3

12Live Load l/240


187 228

1.5/3

428 543

1.5/3.2

890 1,152

2.7/6.6

1,602 1,721

3.9/9.7

1,884 1,924

4.3/10.7

* 2,206

4.5/11.3

* 2,204

4.5/11.3

* 2,201

4.5/11.3

* 2,194

4.5/11.3

13Live Load l/240


147 175

1.5/3

337 421

1.5/3

700 898

2.3/5.6

1,260 1,460 3.6/9

1,482 1,637 4/9.9

* 2,035

4.5/11.3

* 2,033

4.5/11.3

* 2,030

4.5/11.3

* 2,022

4.5/11.3

14Live Load l/240


* 136

1.5/3

270 332

1.5/3

560 712

2/4.8

1,008 1,253

3.4/8.4

1,186 1,409 3.7/9.2

* 1,883

4.5/11.3

* 1,886

4.5/11.3

* 1,883

4.5/11.3

* 1,876

4.5/11.3

15Live Load l/240


* 106

1.5/3

219 264

1.5/3

455 572

1.7/4.2

820 1,050

3.1/7.6

964 1,226

3.5/8.6

1,580 1,638

4.5/11.3

* 1,759

4.5/11.3

* 1,756

4.5/11.3

* 1,749

4.5/11.3

16Live Load l/240


* 84

1.5/3

180 213

1.5/3

375 465

1.5/3.7

675 858

2.7/6.7

794 1,044

3.2/7.8

1,302 1,437

4.3/10.7

* 1,648

4.5/11.3

* 1,645

4.5/11.3

* 1,637

4.5/11.3

17Live Load l/240


* 66

1.5/3

* 173

1.5/3

313 382

1.5/3.3

563 708

2.4/5.9

662 868

2.8/6.9

1,086 1,271

4.1/10.1

* 1,549

4.5/11.3

* 1,547

4.5/11.3

* 1,539

4.5/11.3

18Live Load l/240


* 141

1.5/3

263 316

1.5/3

474 589

2.1/5.3

558 729

2.5/6.2

914 1,132

3.8/9.5

1,365 1,432

4.5/11.3

* 1,460

4.5/11.3

* 1,452

4.5/11.3

19Live Load l/240


* 116

1.5/3

224 263

1.5/3

403 495

1.9/4.7

474 617

2.3/5.6

777 1,014 3.6/9

1,161 1,283

4.5/11.3

* 1,382

4.5/11.3

* 1,374

4.5/11.3

20Live Load l/240


* 95

1.5/3

* 221

1.5/3

346 418

1.7/4.3

407 527 2/5

666 871

3.3/8.2

995 1,156

4.4/10.8

* 1,311

4.5/11.3

* 1,304

4.5/11.3

22Live Load l/240


* 65

1.5/3

* 157

1.5/3

260 303

1.5/3.5

305 392

1.7/4.2

501 650

2.7/6.8

747 952

4/9.8

1,064 1,172

4.5/11.3

* 1,182

4.5/11.3

24Live Load l/240


* 113

1.5/3

* 223

1.5/3

235 298

1.5/3.5

385 496

2.3/5.7

576 747

3.4/8.5

820 981

4.5/11.1

* 1,081

4.5/11.3

26Live Load l/240


* 81

1.5/3

* 166

1.5/3

185 231

1.5/3

303 386

2/4.9

453 583

2.9/7.2

645 832

4.1/10.2

* 996

4.5/11.3

28Live Load l/240


* 125

1.5/3

148 182

1.5/3

243 306

1.7/4.2

362 463

2.5/6.3

516 665

3.6/8.9

* 922

4.5/11.3

ALLOWABLE UNIFORM ROOF LOADS (PLF) – 115% (SNOW)





Span (ft) Condition

4 PLY - 7"

7 1/4" 9 1/4" 11 1/4" 11 7/8" 14" 16" 18" 24"

6Live Load l/240


* 3,537 3/7.4

* 4,769 4/10

* 5,855

4.5/11.3

* 5,912

4.5/11.3

* 5,908

4.5/11.3

* 5,905

4.5/11.3

* 5,901

4.5/11.3

* 5,891

4.5/11.3

8Live Load l/240


1,929 2,404 2.7/6.8

* 3,341

3.8/9.4

* 4,233

4.5/11.3

* 4,429

4.5/11.3

* 4,425

4.5/11.3

* 4,422

4.5/11.3

* 4,418

4.5/11.3

* 4,408

4.5/11.3

10Live Load l/240


987 1,267

1.9/4.6

2,051 2,342

3.4/8.3

* 3,219

4.5/11.3

* 3,493

4.5/11.3

* 3,535

4.5/11.3

* 3,532

4.5/11.3

* 3,528

4.5/11.3

* 3,518

4.5/11.3

11Live Load l/240


742 940

1.5/3.8

1,541 1,924

3.1/7.6

* 2,723

4.3/10.6

* 3,057

4.5/11.3

* 3,212

4.5/11.3

* 3,208

4.5/11.3

* 3,205

4.5/11.3

* 3,195

4.5/11.3

12Live Load l/240


571 712

1.5/3.2

1,187 1,520 2.7/6.6

2,136 2,276

3.9/9.7

2,512 2,566

4.3/10.7

* 2,942

4.5/11.3

* 2,939

4.5/11.3

* 2,935

4.5/11.3

* 2,925

4.5/11.3

13Live Load l/240


449 550

1.5/3

933 1,182

2.3/5.6

1,680 1,928 3.6/9

1,976 2,183 4/9.9

* 2,714

4.5/11.3

* 2,710

4.5/11.3

* 2,707

4.5/11.3

* 2,697

4.5/11.3

14Live Load l/240


360 430

1.5/3

747 934

2/4.8

1,345 1,652

3.4/8.4

1,582 1,879

3.7/9.2

* 2,510

4.5/11.3

* 2,515

4.5/11.3

* 2,511

4.5/11.3

* 2,501

4.5/11.3

15Live Load l/240


* 340

1.5/3

607 747

1.7/4.2

1,093 1,381

3.1/7.6

1,286 1,635

3.5/8.6

2,017 2,184

4.5/11.3

* 2,345

4.5/11.3

* 2,342

4.5/11.3

* 2,332

4.5/11.3

16Live Load l/240


* 272

1.5/3

500 604

1.5/3.7

901 1,125 2.7/6.7

1,059 1,393

3.2/7.8

1,736 1,916

4.3/10.7

* 2,197

4.5/11.3

* 2,194

4.5/11.3

* 2,183

4.5/11.3

17Live Load l/240


* 218

1.5/3

417 493

1.5/3.3

751 925

2.4/5.9

883 1,158

2.8/6.9

1,448 1,695

4.1/10.1

* 2,066

4.5/11.3

* 2,063

4.5/11.3

* 2,052

4.5/11.3

18Live Load l/240


* 176

1.5/3

* 406

1.5/3

632 767

2.1/5.3

744 972

2.5/6.2

1,219 1,509

3.8/9.5

1,820 1,909

4.5/11.3

* 1,946

4.5/11.3

* 1,936

4.5/11.3

19Live Load l/240


* 142

1.5/3

* 335

1.5/3

538 641

1.9/4.7

632 823

2.3/5.6

1,037 1,352 3.6/9

1,548 1,711

4.5/11.3

* 1,842

4.5/11.3

* 1,832

4.5/11.3

20Live Load l/240


* 115

1.5/3

* 279

1.5/3

461 538

1.7/4.3

542 703 2/5

889 1,161

3.3/8.2

1,327 1,541

4.4/10.8

* 1,749

4.5/11.3

* 1,738

4.5/11.3

22Live Load l/240


* 74

1.5/3

* 193

1.5/3

* 385

1.5/3.5

407 523

1.7/4.2

668 866

2.7/6.8

997 1,269 4/9.8

1,419 1,562

4.5/11.3

* 1,577

4.5/11.3

24Live Load l/240


* 134

1.5/3

* 279

1.5/3

314 398

1.5/3.5

514 662

2.3/5.7

768 997

3.4/8.5

1,093 1,308

4.5/11.1

* 1,442

4.5/11.3

26Live Load l/240


* 92

1.5/3

* 203

1.5/3

247 309

1.5/3

404 515

2/4.9

604 778

2.9/7.2

860 1,110

4.1/10.2

* 1,328

4.5/11.3

28Live Load l/240


* 61

1.5/3

* 147

1.5/3

197 243

1.5/3

324 408

1.7/4.2

483 617

2.5/6.3

688 887

3.6/8.9

* 1,230

4.5/11.3


MINIMUM BEARING LENGTH REQUIREMENTS

IB MAX-CORE LVL 2.0E - 3100Fb

Reaction (lbs) 1 ply (1 3/4'') 2 ply (3 1/2'') 3 ply (5 1/4'') 4 ply (7'')

1,000 1.5 1.5 1.5 1.5

2,000 2.25 1.5 1.5 1.5

3,000 3.5 1.75 1.5 1.5

4,000 4.5 2.25 1.5 1.5

5,000 5.5 2.75 2 1.5

6,000 6.75 3.5 2.25 1.75

7,000 7.75 4 2.75 2

8,000 9 4.5 3 2.25

9,000 10 5 3.5 2.5

10,000 5.5 3.75 2.75

11,000 6.25 4.25 3.25

12,000 6.75 4.5 3.5

13,000 7.25 5 3.75

14,000 7.75 5.25 4

15,000 8.25 5.5 4.25

16,000 9 6 4.5

17,000 9.5 6.25 4.75

18,000 10 6.75 5

19,000 7 5.25

20,000 7.5 5.5

21,000 7.75 6

22,000 8.25 6.25

23,000 8.5 6.5

24,000 9 6.75

25,000 9.25 7

26,000 9.75 7.25

27,000 10 7.5

28,000 7.75

29,000 8

30,000 8.25

31,000 8.75

32,000 9

33,000 9.25

34,000 9.5

35,000 9.75

36,000 10

NOTES:

1. The minimum bearing length table has been developed using the provisions of National Design Specification® for Wood Construction 2015 Edition and the allowable stress design properties provided in APA Product Report® PR-L318.

2. Minimum required bearing length is 1 ½” at beam end supports and 3 ½” at interior supports.

3. Bearing across the full width of the beam is required.

4. Bearing lengths are based on an allowable bearing stress perpendicular to grain of 520 psi for IB MAX-CORE LVL. The structural adequacy of the support material or member must also be verified by the user.

5. Bearing lengths are based on dry service conditions only.

6. No decrease in bearing length is permitted for duration of load.


1. Deflection limits must be verified with local building code and project requirements. The deflection limits used in the tables for floors (100% duration) are L/360 for live load and L/240 for total load. The deflection limits used in the tables for roofs (115% duration) are L/240 for live load and L/180 for total load.

2. The bearing conditions in the load table assume bearing across the full width of the beam, and a bearing material that has a bearing strength equivalent or greater than IB MAX-CORE LVL (520 psi). The load tables include an assumed maximum available bearing length of 4 ½’’ at the exterior supports of the beam.

NOTES FOR ALLOWABLE UNIFORM FLOOR AND ROOF LOADS (PLF)


NOTES

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