|
Trus Joist® TJI® Joist Specifier’s Guide TJ-4000 | April 2016
<br />6
<br />SeCTion 1: 9½"–16" TJi® JoiSTS
<br />General Notes
<br />■ Design reaction includes all loads on the joist. Design shear is com puted at the
<br />inside face of supports and includes all loads on the span(s). Allowable shear
<br />may sometimes be increased at interior supports in accordance with
<br />ICC ES ESR-1153, and these increases are reflected in span tables.
<br />■ The formulas at right approximate the uniform load deflection of Δ (inches).
<br />TJI ® joists are intended
<br />for dry-use applications
<br />Some TJI ® joist series may not be available
<br />in your region. Contact your Weyerhaeuser
<br />representative for information.
<br />TJI® 110 joists
<br />1¾"
<br />3⁄8"
<br />9½"
<br />117⁄8"
<br />14"
<br />16"
<br />1¼"–13⁄8"
<br />1¼"–13⁄8"
<br />TJI® 230 joists
<br />3⁄8"
<br />25⁄16"
<br />9½"
<br />117⁄8"
<br />14"
<br />16"
<br />TJI® 360 joists
<br />3⁄8"
<br />25⁄16"
<br />13⁄8"
<br />117⁄8"
<br />14"
<br />16"
<br />TJI® 560 joists
<br />7⁄16"
<br />3½"
<br />13⁄8"
<br />117⁄8"
<br />14"
<br />16"
<br />This section contains design information for 9½"–16" deep Trus Joist® TJi® joists.
<br />These standard-size TJI® joists are readily available through your local Weyerhaeuser dealer or distributor.
<br />Offered with the flange sizes shown below, they come in lengths up to 60' (in 1' increments).
<br />21⁄16"
<br />TJI® 210 joists
<br />3⁄8"
<br />9½"
<br />117⁄8"
<br />14"
<br />16"
<br />1¼"–13⁄8"
<br />1. All blocking, hangers, rim boards, and rim joists at the end supports of the TJI® joists must be
<br /> completely installed and properly nailed.
<br />2. Lateral strength, like a braced end wall or an existing deck, must be established at the ends
<br />of the bay. This can also be accomplished by a temporary or permanent deck (sheathing)
<br />fastened to the first 4 feet of joists at the end of the bay.
<br />3. Safety bracing of 1x4 (minimum) must be nailed to a braced end wall or sheathed area (as in
<br />note 2) and to each joist. Without this bracing, buckling sideways or rollover is highly probable
<br />under light construction loads—such as a worker or one layer of unnailed sheathing.
<br />4. Sheathing must be completely attached to each TJI® joist before additional loads can be
<br />placed on the system.
<br />5. Ends of cantilevers require safety bracing on both the top and bottom flanges.
<br />6. The flanges must remain straight within a tolerance of ½" from true alignment.
<br />DO NOT walk on joists
<br />until braced.
<br />INJURY MAY RESULT.
<br />DO NOT walk on joists
<br />that are lying flat.
<br />DO NOT stack
<br /> building materials on
<br /> unsheathed joists.
<br />Stack only over
<br />beams or walls.
<br />WARNING NOTES: Lack of proper bracing during construction can result
<br />in serious accidents. Observe the following guidelines:WARNING
<br />Joists are
<br />unstable
<br />until braced
<br /> laterally
<br />Bracing includes:
<br /> •Blocking
<br /> •Hangers
<br /> •Rim Board
<br /> •Sheathing
<br /> •Rim Joist
<br /> •Strut Lines
<br />Design Properties (100% Load Duration)
<br />(1) Caution: Do not increase joist moment design properties by a repetitive member use factor.
<br />(2) See detail W on page 27 for web stiffener requirements and nailing information.
<br />Depth TJI®
<br />Basic Properties Reaction Properties
<br />Joist Weight (lbs/ft)
<br />Maximum Resistive
<br />Moment(1) (ft-lbs)
<br />Joist Only El x 106 (in.2-lbs)
<br />Maximum Vertical
<br />Shear (lbs)
<br />13 ⁄4" End Reaction (lbs)
<br />31⁄2" End
<br />Reaction (lbs)
<br />3½" Intermediate Reaction (lbs)5¼" Intermediate Reaction (lbs)
<br />No Web
<br /> Stif feners
<br />With Web
<br />Stiffeners(2)
<br />No Web
<br /> Stif feners
<br />With Web
<br />Stiffeners(2)
<br />9½"
<br />110 2.3 2,500 157 1,220 910 1,220 1,935 N.A.2,350 N.A.
<br />210 2.6 3,000 186 1,330 1,005 1,330 2,145 N.A.2,565 N.A.
<br />230 2.7 3,330 206 1,330 1,060 1,330 2,410 N.A.2,790 N.A.
<br />117⁄8"
<br />110 2.5 3,160 267 1,560 910 1,375 1,935 2,295 2,350 2,705
<br />210 2.8 3,795 315 1,655 1,005 1,460 2,145 2,505 2,565 2,925
<br />230 3.0 4,215 347 1,655 1,060 1,485 2,410 2,765 2,790 3,150
<br />360 3.0 6,180 419 1,705 1,080 1,505 2,460 2,815 3,000 3,360
<br />560 4.0 9,500 636 2,050 1,265 1,725 3,000 3,475 3,455 3,930
<br />14"
<br />110 2.8 3,740 392 1,860 910 1,375 1,935 2,295 2,350 2,705
<br />210 3.1 4,490 462 1,945 1,005 1,460 2,145 2,505 2,565 2,925
<br />230 3.3 4,990 509 1,945 1,060 1,485 2,410 2,765 2,790 3,150
<br />360 3.3 7,335 612 1,955 1,080 1,505 2,460 2,815 3,000 3,360
<br />560 4.2 11,275 926 2,390 1,265 1,725 3,000 3,475 3,455 3,930
<br />16"
<br />110 3.0 4,280 535 2,145 910 1,375 1,935 2,295 2,350 2,705
<br />210 3.3 5,140 629 2,190 1,005 1,460 2,145 2,505 2,565 2,925
<br />230 3.5 5,710 691 2,190 1,060 1,485 2,410 2,765 2,790 3,150
<br />360 3.5 8,405 830 2,190 1,080 1,505 2,460 2,815 3,000 3,360
<br />560 4.5 12,925 1,252 2,710 1,265 1,725 3,000 3,475 3,455 3,930
<br />w = uniform load in pounds per linear foot
<br />L = span in feet
<br />d = out-to-out depth of the joist in inches
<br />El = value from table above
<br />For TJI® 110, 210, 230, and 360 Joists
<br />Δ = +22.5 wL4
<br />El
<br />2.67 wL2
<br />d x 105
<br />For TJI® 560 Joists
<br />Δ = +22.5 wL4
<br />El
<br />2.29 wL2
<br />d x 105
<br />Page 13
<br />2130 N Grand Ave
<br />10/1/2024
|