Formwork for Concrete Structures by R.L.Peurifoy and G.D- By EasyEngineering.net

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2½ ¼ 160 120 120 150 120 120 140 110 110
5
⁄16 210 150 150 200 140 140 180 130 130
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³⁄8 210 150 150 200 140 140 190 130 130
7
⁄ 16 320 230 230 310 210 210 290 190 190
½ 410 290 290 390 270 270 360 240 240
5
⁄8 670 430 440 640 390 420 590 330 380
¾ 1,010 550 650 960 500 610 890 430 550
7
⁄ 8 1,370 690 880 1,280 630 550 1,130 550 730
Notes:
1. Courtesy, American Forest & Paper Association.
2. See NDS, [1], for values for additional diameters of lag screws and for additional thicknesses and species of wood.
3. See NDS, [1], for additional adjustments that may be required for a particular condition.
4. Symbols: // – represents values for loads parallel to grain of wood in both members.
s⊥ – represents values for side members with loads perpendicular to grain and main members parallel to grain.
m⊥ – represents values for main members with loads perpendicular to grain and side members parallel to grain.
TABLE 4-26
Lateral Design Values for Lag Screws for Single Shear in Two Members with Both Members of Identical Species, lb
81
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