14 joists 2020s pdf - openlab.citytech.cuny.edu
TRANSCRIPT
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ARCH 2331BUILDING TECHNOLOGY II
Joist Layout Plans
Cite: "Passive House Blanden / HASA Architects" 26 Oct 2018. ArchDaily. Accessed 30 Oct 2018. <https://www.archdaily.com/904328/passive-house-blanden-hasa-architects/> ISSN 0719-8884
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Joist Layout Plan
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Graphic Guide to Frame Construction, Rob Thalon, Taunton Press
ELEMENTS OF A FLOOR SYSTEM
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Crushed stone drainage fill has been placed within this foundation wall of a full basement. The vapor barrier and a concrete slab will be added to provide the basement floor. Pockets to receive first floor beams have been blocked out at the top of the wall.
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Note, the lightwells in this photograph.
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A crawl space isolates the first floor wood platform from the earth and provides space for electrical and plumbing lines. A concrete "rat slab" has been poured over the vapor barrier. The headroom is just sufficient for a small person to stand up.
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TYPICAL WOOD FRAME CONSTRUCTION
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Graphic Guide to Frame Construction, Rob Thalon, Taunton Press
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STUD
SUBFLOOR
FLOOR JOIST
FOUNDATION WALL
ANCHOR BOLT
MINIMUM 8” TO 12” PER CODE
SLOPED GROUND SURFACE
SILL PLATE SEALER
MUDSILL (SILL PLATE)
RIM JOIST (HEADER)
SOLE PLATE
(BOTTOM PLATE)
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A double 2X6 sill has been secured with anchor bolts and the 2X10 floor joists - 16" o.c. are toe- nailed to them. A strip of sealant is seen between the wood and concrete. Back-filling is not done on the outside of the basement wall until the floor framing is in place to serve as bracing.
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Sill sealer being applied and pressed straight through the anchor bolts.
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Graphic Guide to Frame Construction, Rob Thalon, Taunton Press
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This foundation wall is forming a crawl space. Porous gravel or crushed stone fill is placed on its floor to assure good drainage and a sheet plastic as a vapor barrier is laid on top. Steel beams may support the first floor wood joists.
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Graphic Guide to Frame Construction, Rob Thalon, Taunton Press
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Plywood: Plywood subflooring should be installed with its long dimension and face grain perpendicular to the joists. Installing plywood with the subfloor parallel to the joists makes the flooring weaker.
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Some of the interior support for the floor framing is provided by the CMU interior walls of the basement space. Beams made up of triple joists provide other support. Where a partition will fall parallel to the floor joists, and around an opening for a stairway, the joists are doubled.
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It is necessary to brace long joist at midspan against twisting or buckling. The method being used here is solid blocking with short pieces of floor joist. The blocking is staggered so that the pieces may be end nailed to the joists.
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Graphic Guide to Frame Construction, Rob Thalon, Taunton Press
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After the floor joist are in place plywood deck is installed on top of them. A mastic adhesive is gunned onto each joist just before the plywood is put down to increase the ridgity of the floor and to prevent squeaks.
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The plywood sheets form the subfloor of the house. The sheets are placed with their long dimension at right angles to the joists and their ends are supported at the mid-line of a joist. An air or electrically powered nailier is used for the nailing.
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B Final\Perla_Ronald
In this preliminary layout, different bays have different joist spacing.
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Graphic Guide to Frame Construction, Rob Thalon, Taunton Press
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2015 IRC - International Residential Code for One and Two Family Dwellingshttps://codes.iccsafe.org/content/document/553?site_type=public
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http://www.fp-supply.com/st-louis-trusjoist-tji-i-joists.html
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Graphic Guide to Frame Construction, Rob Thalon, Taunton Press
Half the class will design with TJI or engineered I Joists the other will design with Solid-Sawn Joists.
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Perla, Ronald BT2, 2018F
For next class:
• Joist Layout plan
• Joist layout Pinup
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Links: • American Wood Council (AWC)
https://awc.org/codes-standards/calculators-software/spancalc
• Forest Products Supplyhttp://www.fp-supply.com/st-louis-trusjoist-tji-i-joists.html
• The Engineered Wood Association (APA) Advanced Framing Guide
• Span Tables Tutorialhttps://www.awc.org/codes-standards/spantables/tutorial
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Floor Joist Spacing and Layouthttps://awc.org/codes-standards/calculators-software/spancalc
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Assume:• Species: Douglas
Fir-Larch• Size: PER YOUR
DESIGN• Grade: No. 1 • Member Type:
Floor Joists • Deflection Limit: L/360• Spacing: 12” or 16” or 24” PER YOUR DESIGN• Live Load (psf): 40• Dead Load (psf): 20
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Floor Joist Spacing and Layout
•Forest Products Supplyhttp://www.fp-supply.com/st-louis-trusjoist-tji-i-joists.html
or TJI's
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Assume:• Deformation limit L/360• 40-psf live load • 20-psf dead load• 12” or 16” or 24”
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Be consistent on your project use only one size of TJI (110 or 210 joists)
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BT2 2019S Amir, Tasfia
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BT2 2019S Amir, Tasfia
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BT2 2019F Szpin, Hubert
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Cite: "Passive House Blanden / HASA Architects" 26 Oct 2018. ArchDaily. Accessed 30 Oct 2018. <https://www.archdaily.com/904328/passive-house-blanden-hasa-architects/> ISSN 0719-8884