1-1/4' timberstrand lsl and tj 1-1/8' rim board specifier ... · #tj-8000 specifier’s...

#TJ-8000 SPECIFIER’S GUIDE

1¼" TimBeRSTRand® LSL Rim BoaRd and11 ⁄8" TJ® Rim BoaRdFeaturing Selection and installation information for lateral Wind loads

WoodBYWY.Com 1.888.453.8358

• For use in aSCe/Sei 7-05 Basic Wind Speed Regions of 90 and 120 mph

• 11⁄4" Thickness matches lateral load Capacity of 2x nominal Sawn lumber in unblocked diaphragms

• easy-to-use Selection Tables Consider the Home’s Size, Shape, and Roof design

• limited product Warranty

1¼" TimberStrand® LSL and 11 ⁄8" TJ® Rim Board Specifier's Guide TJ-8000 | February 2013

2

The products in this guide are readily available through our nationwide network of distributors and dealers. For more information on other applications or other Trus Joist® products, contact your Weyerhaeuser representative.

TaBle oF ConTenTS

Lateral Load Capacity 3Design Properties 4Material Weights 4Nailing Recommendations 4Lateral Details and Specifications 5Lateral Detail Selection Tables 6–7

Code evaluations: ICC ES ESR-1387

aBouT THiS Guide

This guide for lateral wind loads is an easy-to-use design tool to help specifiers and builders select a rim board product. It provides selection information sufficient to build a home that can withstand lateral forces generated by design wind speeds of up to 120 mph.

For years, little attention was paid to the importance of lateral forces. However, recent earthquake and hurricane disasters have demonstrated the importance of proper lateral load transfer. Engineering analysis and practical experience confirm that rim board is often an essential structural link in a home’s ability to resist the lateral loads generated by high winds.

Trus Joist® 1¼" TimberStrand® laminated strand lumber (LSL) rim board supports vertical loads and provides the nailing surface necessary to adequately transfer wind and seismic loads. 1¼" TimberStrand® LSL rim board is manufactured by Weyerhaeuser under quality assurance requirements for strength, stiffness, and durability. We’re so confident about its performance that we include it in our limited product warranty and recommend it for use with the Trus Joist® TJI® Floor System.

For applications that don’t require the superior performance of 1¼" rim material, we offer 11⁄8" TJ® Rim Board. Also manufactured under our quality assurance program, 11⁄8" TJ® Rim Board has properties that comply with conventional construction framing practices and is also covered by our limited product warranty.

Quality Rim Board from Weyerhaeuser

• Longer lengths mean faster installation and fewer joints for better insulating values

• Depths are sized to match TJI® joists for less cutting and material waste

• High vertical load transfer capacity

• Recognized and accepted by major building codes

available Sizes:1¼" TimberStrand® lSl rim board is available in the following sizes: Depths: 9½", 117⁄8", 14", 16", 18", and 20" Lengths: 16', 20', 24', 32', and 48'

11 ⁄8" TJ® Rim Board is available in the following sizes: Depths: 9½", 117⁄8", 14", and 16" Lengths: 12' and 16'

T 55

uoc m

8588

u

om

8 8533 8

TJ

8488

Use support blocks at 10' on-center to keep bundles out of mud and water

Align stickers directly over support blocks

Protect product from sun and water

CAUTION: Wrap is slippery when wet or icypRoduCT

SToRaGe


3

1¼" TimBeRSTRand® lSl Rim BoaRd and laTeRal load CapaCiTY

Roof diaphragm

Floor diaphragm

Load in roof and floor diaphragms is transferred to side walls (or shear walls) by rim board, rim

joist, or blocking. Connections are essential to transfer load.

Shear walls

Side walls act as shear force collectors. Loads may accumulate

from top of house to bottom.

Wind force on a wall is resisted by wall sheathing and framing.

Roof diaphragm

Floor diaphragm

Wind force

Why is lateral load capacity of rim boards important?Lateral loading on structures is typically from wind or seismic forces, and rim board is an important structural link in resisting those lateral loads. To further explain lateral loads, let’s look at a typical home and how the wind loads travel through the building:

Why is TimberStrand® LSL rim board 11⁄4" thick?Through field experience and testing, Weyerhaeuser found that 11⁄4"-thick rim board provides an adequate nailing surface and maximizes lateral load transfer.

Consideration was given to:

Panel edge distanceSection 2305.1.2.1 of the IBC states that nails shall be placed not less than 3⁄8" from the panel edge for lateral-force-resisting systems.

Nail edge distanceTo avoid splitting, an edge distance of 2.5 x the nail diameter is recommended. This applies to the sheathing nails or fasteners and to the larger-diameter nails that transfer wall loads:

■ 8d (0.131" x 21⁄2") nail, 2.5 x 0.131" dia. = 0.33" ≈ 3⁄8" minimum edge distance

■ 16d (0.162" x 31⁄2") nail, 2.5 x 0.162" dia. = 0.41" ≈ 7⁄16" minimum edge distance

The 11⁄4" thickness is required to provide the necessary edge distance for wall nails and provides some margin for error in the placement of the sheathing nails or fasteners.

See page 5 for more detail options

2x4 or 2x6 stud wall

When sheathing thickness exceeds 7⁄8", trim sheathing tongue at rim board

11⁄4" TimberStrand® LSL rim board

TJI® joist spanning in either direction

Wall sheathing

Wall nail, typically 16d (0.135" x 31⁄2")

at 12" on-center

Floor panel nail, typically 8d (0.131" x 21⁄2")

at 6" on-center

Toe nail, 10d (0.131" x 3") at 6" on-center

How do the lateral capacities of 11⁄4" TimberStrand® LSL rim board compare to sawn lumber framing?In unblocked floor or roof diaphragms, 11⁄4" TimberStrand® LSL rim board is capable of transferring the same lateral loads allowed by code for 2" nominal framing members. This equivalency was verified by testing: International Building Code, Case 1, unblocked diaphragm at 240 plf with 23⁄32" sheathing and 8d (0.131" x 21⁄2") nails at 6" on-center.

For more information about the lateral load capacity of rim board in wind-controlled regions, see pages 6–7.

Are all 11⁄4" rim boards equal?No. Not every rim board material meets Weyerhaeuser’s tight manufacturing specifications for strength, dimensional stability, and durability.

Weyerhaeuser offers 11⁄4" TimberStrand® LSL rim board as our premium rim board product and recommends it for use with our TJI® joist floor system.

91⁄2" 117⁄8" 14" 16" 18" 20"

11⁄4"

1¼" TimberStrand® LSL rim board is manufactured to a consistent moisture content and uniform dimensions, with depths that match

other TJI® joist floor system components

Wall is supported at top by roof diaphragm and at bottom

by floor diaphragm.

Floor diaphragm

Roof diaphragm


4

deSiGn pRopeRTieS and maTeRial WeiGHTS

Allowable Design Stresses(1) (100% Load Duration)

(1) Unless otherwise noted, adjustment to the design stresses for duration of load are permitted in accordance with the applicable code.

(2) 11⁄4" TimberStrand® LSL rim board is recognized by code as providing the lateral transfer capacity equivalent to 2" nominal Douglas fir-larch or southern pine in unblocked horizontal diaphragms.

(3) 11⁄8" TJ® Rim Board is recognized as an acceptable rim board material for use in conventional construction; it has a maximum lateral transfer capacity of 180 plf.

(4) Reference modulus of elasticity for beam stability calculations, per NDS® 2005.(5) For 12" depth. For other depths, multiply by [12__

d ] 0.092

(6) Fc⊥ must not be increased for duration of load.(7) For depths up to 16". For 18" and 20" depths, capacity is 3,450 plf.

Encloses cantilevered TJI® joists

Attach to each joist with two 10d (0.131" x 3") nails, one each

at top and bottom flange.

Provides a solid surface for attachment of sheathing, siding, and deck ledgers

When attaching deck ledgers, locate bolts 2" minimum from top and bottom edges of rim board and deck ledger.

Required bolt frequency varies by application and is dictated by specific deck geometry/loading. Bolt spacing

limits match NDS® minimum recommendations.

Lag Screw Capacities

Fastener SizeAllowable Load(1) (lbs)

1¼" Rim Board

11⁄8" Rim Board

3⁄8" lag bolt 400 N.A.1⁄2" lag bolt 475 400

(1) Allowable load determined in accordance with AC 124.■ Corrosion-resistant fasteners required for wet-service

applications.

11⁄4" nailing surface increases load capacity, reduces splits, and makes subflooring easier to fasten

Nail SizeOn-Center Nail Spacing

1¼" Rim Board 11⁄8" Rim Board8d (0.113" x 21⁄2") 4" 6"8d (0.131" x 21⁄2") 4" 6"

10d (0.128" x 3"), 12d (0.128" x 31⁄4") 4" 6"10d (0.148" x 3"), 12d (0.148" x 31⁄4") 4" 6"

16d (0.135" x 31⁄2") 4" 16"(1)

16d (0.148" x 31⁄4") sinker 4" 16"(1)

16d (0.162" x 31⁄2") 6"(2) 16"(1)

(1) Can be reduced to 5" on-center with maximum nail penetration of 13⁄8" into the narrow edge (for example, nails that connect the sole plate above to the block or rim).

(2) Can be reduced to 4" on-center with maximum nail penetration of 13⁄8" into the narrow edge (for example, nails that connect the sole plate above to the block or rim).

nailinG ReCommendaTionS

Depth

Weights (plf)1¼"

TimberStrand® LSL Rim Board

11⁄8" TJ® Rim Board

91⁄2" 3.5 2.8117⁄8" 4.3 3.514" 5.1 4.216" 5.8 4.818" 6.7 –20" 7.3 –

Approximate Weights of Rim Board

TimberStrand® LSL and TJ® Rim Board are intended for dry-use applications

11⁄4" TimberStrand® LSL

Rim Board(2)

11⁄8" TJ® Rim Board(3)

Modulus of elasticity E = 1.3 x 106 psi –Adjusted modulus of elasticity Emin = 660,750(4) –Shear modulus of elasticity G = 81,250 psi –Flexural stress Fb = 1,700 psi(5) –Compression perpendicular to grain Fc⊥ = 710 psi(6) –Compression parallel to grain Fcll = 1,835 psi –Horizontal shear parallel to grain Fv = 425 psi –Vertical load capacity = 4,250 plf(7) 4,000 plf(7)

Offers high vertical load transfer capacity. Replaces TJI® rim joists and blocking panels.

Vertical load transfer at bearing

1¼" Rim Board

11⁄8" Rim Board

4,250 plf 4,000 plf


5

Rim BoaRd deTailS and inSTallaTion

(1) All sheathing shall be properly blocked and nailed.(2) Verify the lateral capacity of the wall. Not all types of code-allowed wall construction provide the same lateral resistance. Check with your local building officials or the design professional of record.(3) Detail A3.3 shall be a segmented wall, location of full-height structural sheathing per code.(4) Sheathing shall be continuous over all plate-to-plate and plate-to-rim board interfaces and may butt together at mid-depth of rim board as shown in A3.4. At foundation, fasten the bottom edge of

the sheathing to the sill plate.(5) In addition, one 6'-8" standard door opening is allowed.(6) If required, holdowns shall be Simpson Strong-Tie® CS20 (or equivalent) straps attached with four 8d (0.131" x 21⁄2") nails at each end. As an alternative to holdown straps, wall sheathing may be

attached as shown in A3.4. See footnote 4.

SpecificationsRim Board Installation Detail

A3.1(1)(2) A3.2(1)(2) A3.3(1) A3.4(1)

Rim Board Thickness 11⁄8" 11⁄4" 11⁄4" 11⁄4"Plate Nail—16d (0.135" x 31⁄2") 16" o.c. 12" o.c. 8" o.c. 12" o.c.

Floor Panel Nail—8d (0.131" x 21⁄2") 6" o.c.Rim Board to TJI® Joist—10d (0.131" x 3") One into each flange

Toe Nail—10d (0.131" x 3") 6" o.c. 6" o.c. 4" o.c. 6" o.c.TJI® Joist to Plate—8d (0.113" x 21⁄2") Two nails driven at an angle into bottom flange, one each side of web at least 11⁄2" from end

Wal

l Fra

min

g

Exte

rior

Fac

e Sheathing

Per code Per code

7⁄16" structural 1 sheathing(3)

3⁄8" structural 1sheathing in all areas(4)

Boundary Nailing 8d (0.131" x 21⁄2") at 6" o.c. 8d (0.131" x 21⁄2") at 4" o.c.Intermediate Nailing 8d (0.131" x 21⁄2") at 12" o.c.

Max. Window Opening Height 5'-4"(5)

% of Wall with Full Height Sheathing 70%

Inte

rior

Fa

ce

SheathingPer code Per code

1⁄2" gypsumBoundary Nailing 5d (0.086" x 15⁄8") at 7" o.c.

Intermediate Nailing 5d (0.086" x 15⁄8") at 10" o.c.

Holdowns90 mph Wind Zone None

120 mph Wind Zone 16" o.c. within 10' of corners(6)

16" o.c. within 6' of corners(6)

16" o.c. within 4' of corners(6) None

Rim Board Installation

a3.4 a3.4Wa3.1 a3.2 a3.3 a3.1

Wa3.2

Wa3.3

W

Exterior Deck Attachment

Structural exterior sheathing 11⁄8" TJ® Rim Board or 11⁄4" TimberStrand® LSL

Flashing

Treated 2x_ ledger

Maintain 2" distance (minimum) from edge of ledger to fastener. See fastener table on page 4.

Allowable load per Lag Screw Capacities table on page 4LA

Sheathing may be attached as shown in A3.4

TJI® joist spanning in either direction

Plate nail

Floor panel nail

Toe nail

When panel thickness exceeds 7⁄8", trim sheathing tongue at rim boardRim board to TJI® joist

Rim board to TJI® joist

TJI® joist to plate

2x4 or 2x6 stud wall at 16" on-center maximum Web stiffener required on

both sides at A3._W ONLYPlate nail

Floor panel nail

Attach sheathing per nailing schedule (above)

Toe nail

12" minimumTJI® joist spanning in either direction

Install proper blocking to support all panel edges

11⁄4" TimberStrand® LSL rim board

When sheathing thickness exceeds 7⁄8", trim sheathing tongue at rim board

TJI® joist to plate



2x4 or 2x6 stud wall at 16" on-center maximum Web stiffener required on

both sides at A3.4W ONLY

11⁄8" TJ® Rim Board or 11⁄4" TimberStrand® LSL

(see nailing schedule above)


6

laTeRal deTail SeleCTion TaBleS

General Assumptions and Limitations■ Maximum building dimensions (L1 is the longest side and L2 is the shortest side):

L1 = 80', L2 = 60'. See Example on page 7.■ Structures are regular-shaped with continuous load paths to the foundation,

as defined in ASCE/SEI 7-05.■ Tables are applicable for one- and two-story residential structures with

bottom-level wall heights of 9' or less and second-level wall heights of 8' or less.■ Wind pressures are based on: – ASCE/SEI 7-05 – 90 and 120 mph winds (3-second gust) – Exposure category A or B■ No special wind regions or topographical effects have been considered.■ User should verify that vertical load capacity of rim board is not exceeded.

See page 4.■ Tables assume wall construction per the details and specifications on page 5.■ Wall framing assumes a stud spacing of 16" on-center and a specific gravity

of 0.42.■ A higher-numbered detail may be used in place of the detail number shown.■ For other application conditions, contact your Weyerhaeuser representative.■ Shaded cells indicate that conventional construction using 11⁄8" TJ® Rim Board

is acceptable.

How to Use These TablesStep 1. Check the General Assumptions and Limitations to ensure applicability of

these tables.

Step 2. Draw a box around the foundation of the structure as shown on page 7. Carports, single story slab-on-grade garages, porches, decks, overhangs, or other such elements shall be excluded from the main structure.

Step 3. Calculate the Aspect Ratio = L1/L2

Step 4. Determine the Roof Pitch and Ridge Height.

Step 5. Using the appropriate wind speed table, find the section corresponding to your rim board application. Find the row where the Roof Pitch and Ridge Height meet or exceed those of the structure.

Step 6. To choose an appropriate detail, follow the row to the right until it intersects with an Aspect Ratio that meets or exceeds the ratio calculated in step 3.

Step 7. See page 5 for details and specifications.

90 mph or lessLegend

1 = Detail A3.1

2 = Detail A3.2

3 = Detail A3.3

4 = Detail A3.4

See page 5 for details.One

Story

Roof Pitch Ridge Height (ft)

Aspect Ratio (L1/L2)1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 2 2.25

4:12 17 1 1 1 1 1 1 1 1 1 1

6:12

17 1 1 1 1 1 1 1 1 1 118 1 1 1 1 1 1 1 1 1 119 1 1 1 1 1 1 1 1 1 220 1 1 1 1 1 1 1 1 1 2

8:12

19 1 1 1 1 1 1 1 1 2 221 1 1 1 1 1 1 1 1 2 222 1 1 1 1 1 1 2 2 2 323 1 1 1 1 1 2 2 2 2 3

10:12 to

12:12

20 1 1 1 1 1 1 1 1 2 222 1 1 1 1 1 1 1 2 2 323 1 1 1 1 1 2 2 2 2 325 1 1 1 1 2 2 2 2 3 327 1 1 1 2 2 2 2 2 3 328 1 1 2 2 2 2 2 2 3 330 1 2 2 2 2 2 2 3 3 3

Two Story

4:12 26 1 1 1 1 1 1 1 1 2 2

6:12

25 1 1 1 1 1 1 2 2 2 326 1 1 1 1 1 2 2 2 2 327 1 1 1 1 1 2 2 2 2 328 1 1 1 1 1 2 2 2 3 329 1 1 1 1 2 2 2 2 3 3

8:12

27 1 1 1 2 2 2 2 2 3 428 1 1 1 2 2 2 2 2 3 430 1 1 2 2 2 2 2 3 4 431 1 1 2 2 2 2 3 3 4 432 1 2 2 2 2 2 3 3 4 4

10:12 to

12:12

29 1 1 2 2 2 2 2 3 4 431 1 1 2 2 2 2 3 3 4 432 1 2 2 2 2 2 3 3 4 434 1 2 2 2 2 3 3 4 4 436 2 2 2 2 3 3 3 4 4 437 2 2 2 2 3 3 4 4 4 439 2 2 2 3 3 4 4 4 4 4


7

laTeRal deTail SeleCTion TaBleS

120 mph or less

Ridge Height = 30'

12

8

48'

L2

L1

40'

ExampleStep 1. Assume the house below is two stories with a Roof Pitch of 8:12

and a Ridge Height of 30'.

Step 2. Draw a box around the structure.

Step 3. L1/L2 = 48'/40' = 1.2

Step 4. Roof Pitch = 8:12 Ridge Height = 30'

Step 5. 90 mph wind zone: lateral detail = A3.2 120 mph wind zone: lateral detail = A3.4

One Story

Roof Pitch Ridge Height (ft)

Aspect Ratio (L1/L2)1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 2 2.25

4:12 17 1 1 1 1 1 1 1 2 2 2

6:12

17 1 1 1 1 2 2 2 2 3 318 1 1 1 2 2 2 2 3 3 319 1 1 1 2 2 2 2 3 3 320 1 1 1 2 2 2 2 3 3 3

8:12

19 1 2 2 2 3 3 3 3 3 421 2 2 2 3 3 3 3 3 3 422 2 2 2 3 3 3 3 3 4 423 2 2 3 3 3 3 3 3 4 4

10:12 to

12:12

20 2 2 2 2 3 3 3 3 3 422 2 2 2 3 3 3 3 3 4 423 2 2 3 3 3 3 3 3 4 425 2 2 3 3 3 3 3 4 4 427 2 3 3 3 3 4 4 4 4 428 3 3 3 3 3 4 4 4 4 –30 3 3 3 4 4 4 4 4 4 –

Two Story

4:12 26 2 2 2 3 3 3 3 3 4 4

6:12

25 2 3 3 3 3 4 4 4 4 –26 3 3 3 3 4 4 4 4 4 –27 3 3 3 3 4 4 4 4 4 –28 3 3 3 3 4 4 4 4 4 –29 3 3 3 3 4 4 4 4 4 –

8:12

27 3 3 4 4 4 4 4 4 – –28 3 3 4 4 4 4 4 4 – –30 3 4 4 4 4 4 4 4 – –31 3 4 4 4 4 4 4 4 – –32 4 4 4 4 4 4 4 4 – –

10:12 to

12:12

29 3 3 4 4 4 4 4 4 – –31 3 4 4 4 4 4 4 4 – –32 4 4 4 4 4 4 4 4 – –34 4 4 4 4 4 4 4 – – –36 4 4 4 4 4 4 – – – –37 4 4 4 4 4 4 – – – –39 4 4 4 4 4 – – – – –

Legend

1 = Detail A3.1

2 = Detail A3.2

3 = Detail A3.3

4 = Detail A3.4

See page 5 for details.

See How to Use These Tables and General Assumptions and Limitations on page 6.

February 2013 • Reorder TJ-8000This document supersedes all previous versions. If this is more than one year old, contact your dealer or Weyerhaeuser rep.

You want to build solid and durable structures—we want to help. Weyerhaeuser provides high-quality building products and unparalleled technical and field assistance to support you and your project from start to finish.

Floors and Roofs: Start with the best framing components in the industry: our Trus Joist® TJI® joists; TimberStrand® LSL rim board; and TimberStrand® LSL, Microllam® LVL, and Parallam® PSL headers and beams. Pull them all together with our self-gapping and self-draining Weyerhaeuser Edge GoldTM floor panels and durable Weyerhaeuser roof sheathing.

Walls: Get the best value out of your framing package—use TimberStrand® LSL studs for tall walls, kitchens, and bathrooms, and our traditional, solid-sawn lumber everywhere else. Cut down installation time by using TimberStrand® LSL headers for doors and windows, and Weyerhaeuser wall sheathing with its handy two-way nail lines. Use our TJ® Shear Brace for extra support in walls with large openings or in high wind or seismic areas.

Software Solutions: Whether you are a design professional or lumber dealer, Weyerhaeuser offers an array of software packages to help you specify individual framing members, create cut lists, manage inventories—even help you design a complete structural frame. Contact your Weyerhaeuser representative to find out how to get the software you need.

Technical Support: Need technical help? Weyerhaeuser has one of the largest networks of engineers and sales representatives in the business. Call us for help, and a skilled member from our team of experts will answer your questions and work with you to develop solutions that meet all your structural framing needs.

We Can Help You Build SmaRTeR

, Weyerhaeuser, Microllam, Parallam, TimberStrand, TJ, TJI, and Trus Joist are registered trademarks and Edge Gold is a trademark of Weyerhaeuser NR. © 2013 Weyerhaeuser NR Company. All rights reserved. Printed in the USA.

Visit woodbywy.com/warranty for copies of this and other Trus Joist® Engineered Wood Product warranties.

ConTaCT uS

1.888.453.8358 • woodbywy.com/contact

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1-1/4' timberstrand lsl and tj 1-1/8' rim board specifier ... · #tj-8000 specifier’s...

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