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   Willamette  StrucJoist SJ-32-42-55  

StrucJoist SJ-32-42-55 - Page 40

 

 

Table 1

ALLOWABLE STRESSES1 FOR STRUCLAM LVL

Grade Modulus Of Elasticity ( X 106 psi) Flexure2

Fb psi

Tension4

Ft psi

Compression3 psi Horizontal Shear psi
Parallel Perpendicular Joist Fv Plank Fv
Fc Joist Fcp Plank Fcp
2.2E 2.20 3100 2200 3000 700 450 285 165
2.0E 2.00 2950 1900 2750 700 450 285 165
1,9E 1.90 2600 1700 2400 700 450 285 165
1.8E 1.80 2600 1700 2400 700 450 285 165

For Sl: 1 psi = 6.89 kPa

  1. Adjustments to allowable design stresses, except for E and Fc l , shall be in accordance with the applicable code. Increases in Fb for repetitive member use shall be 4 percent.
  2. Values are for plank orientation with a maximum 3.5 inch (88.9 mm) depth and for joist orientation with a 12 inch (310.9 mm) depth. In joist orientation, adjust Fb for other depths by (12/d).1333. For depths less than 3.5 inch (88.9 mm), use the value for 3.5 inch (88.9mm).
  3. Values for Fc l are based on 0.04 inch (1 mm) displacement per ASTM D 143.
  4. Tension value are for a 4-foot (1243 mm) LVL length. For longer LVL lengths, the value shall be adjusted by multiplying by (4.0 / LVL length In feet) 0.125. For lengths less than 4 feet (1243 mm), use the table value for 4 feet (1243 mm) .

Table 2

SECTION PROPERTIES AND ALLOWABLE SHEAR AND MOMENT CAPACITY

2.0E StrucLam 1-3/4-inches WIDE
Depth (inches) Weight (Ibs/ft) AIlowable Shear (lbs) Allowable Moment (ft-lbs) El (x10^6)

Ibs-in2

100% 115% 125% 100% 115% 125%
5-1/2 2.51 1829 2103 2286 2407 2768 3009 49
7-1/4 3.3 2411 2773 3014 4031 4636 5039 111
9-1/2 4 33 3159 3633 3949 6676 7677 8345 250
11-7/8 5.41 3948 4540 4935 10125 11644 12656 488
14 6.38 4655 5353 5819 13768 15833 17210 800
16 7.29 5320 6118 6650 17665 20315 22081 1195
18 8.2 5985 6883 7481 22009 25310 27511 1701

 

1.9E StrucLam 1-3/4-inches WIDE
Depth (inches) Weight (Ibs/ft) Allowable Shear (lbs) Allowable Moment (ft-lbs) El (x10^6)

Ibs-in2

100% 115% 125% 100% 115% 125%
5-1/2 2.51 1829 2103 2286 2121 2439 2651 46
7-1/4 3.3 2411 2773 3014 3552 4085 4440 106
9-1/2 4.33 3159 3633 3949 5884 6767 7355 238
11-7/8 5.41 3948 4540 4935 8924 10263 11155 464
14 6.38 4655 5353 5819 12134 13954 15168 760
16 7.29 5320 6118 6650 15569 17904 19461 1135
18 8.2 5985 6883 7481 19397 22307 24246 1616

For Sl; 1 inch = 25.4 mm, 1 plf= 1.488 kg/m, 1 lbf = 4.45N, 1 lbf ft=1.36 N m.

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