Document V3QOp5Xj2Eo8BEyq8y4JKRQ5q
TABLE 46-B BASIC STRESSES FOR LAMINATED STRUCTURAL MEMBERS
Extreme fiber in bending or tension parallel
to Kratn
(P'0
Maximum longi
tudinal shear
(p*0
Compression perjien-
du ular Hr grain
(pu)
Compression iwrattel to gram (pst)
Modulus of elaituity in bending (1,000 psx)
Batdcypress (southern cypress) Cedars
Redcedar western
White-cedar Atlantic (southern white cedar) and northern
White-cedar Port-Orford Yellow-cedar Alaska
(Aiaska-cedar) Douglas-fir, coast type Douglas-fir, coast type
close-grained Douglas-fir, Rocky Mountain type Douglas-fir all regions, dense Fir, balsam Fir California red grand, noble
and white Hemlock eastern Hemlock, western
(west coast hemlock) Larch, western Pine, eastern white (northern
(white) ponderosa. sugar, and western white (Idaho white) Pine jack Pine lodgepole Pine, red (Norway pine) Pine southern yeJtow Pine, southern yellow, dense Redwood Redwood, close-grained Spruce Engelmann Spruce red white and Sitka Tamarack
SOFTWOODS
2,400 1,600
170 135
1 400 2,000
2 000 2 750
2 950 2,000 3200 1 600
2000 2.000
2.400 2 750
115 150
150 150
ISO 135 150 115
115 115
125 ISO
1 600 2 000 1 600 2 000 2 750 3,200 2200 2 400 1,400 2 000 2 200
135
135 too
135 180 ISO 115 115 115 135 160
330
220
195 275
275 350
375 310 410 165
330 330
330 350
275 240 240 240 350 410 275 295 195 275 330
2000
1 300
1 050 1 650
1 450 2000
2 150 1,450 2 350 1300
1 300 1 300
1,650 2000
1 400 1 450 t 300 1 450 2 000 2350 1,850 2,000 1 100 1 450 1,850
HARDWOODS
Ash, black
Ash, white Beech, American Birch sweet and yellow Cottonwood, eastern Elm American and slippery
(white or soft elm) Elm rock Hickory and pecan Maple black and sugar
(hard maple)
Oak red and white Sweetgum (redgum or sapgum) Tupelo black (blackgum) Tupelo water Yellow-poplar
1,800 2,550 2 750 2 750 1 400
2 000 2 750 3 500
2,750 2 550 2 000 2 000 2 000 1.800
150 330 210 550 210 550 210 550 100 165
170 275 210 550 235 660
210 550 210 550 170 330 170 330 170 330 150 240
Courtesy Forest Products Laboratory Note This table is for clear material under dry conditions as in most covered structures
1450
1 150 2,000 2 200 2300 1.100
1 450 2 200 2 750
2 200 1 850 1 450 1,450 1,450 1.450
1 300
1,100
900 1 600
1.300 1,800
1 800 1 300 1 800 1,100
1 200 1300
1,500 1800
1 100 1 200 1.100 1 300 1,800 1800 1 300 1 300 1,100 1.300 1,400
1300 1,600 1.800 1 800 1 100
1 300 1 400 2000
1.800 1 600 1.300 1 300 1300 1,300