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<br /> FASTENERS SECTION 9 <br /> Table 9.3: Allowable loads On Screws And Bolts <br /> (As Recommended By Manufacturers) <br />Self-Tapping and Machine Screws Allowable Loads Tensile <br />Strength 55,000 psi; Shear 24,000 psi <br /> Metal to Metal <br />Screw Diameter Shear (Ibs.) Double Shear Pull Out <br />*flbs.) Ilbs.) <br /> #S 334 668 167 <br /> #10 418 836 209 <br /> #12 576 1,152 288 <br /> #14 734 1.468 367 <br /> 1/4" 761 1522 380 <br /> 5/16" 1,253 2,506 626 <br /> 3/S" 1,588 3,710 928 <br /> Metal to PlYwood <br /> 1/2" 4 ply 5/S" 4 ply 3/4" 4 ply <br />Screw Diameter Shear (Ibs.) Pull Out Shear (Ibs.) Pull Out Shear (Ibs.) Pull Out <br />IIbs.) IIbsJ IIbs.) <br /> #S 93 48 113 59 134 71 <br /> #10 100 55 120 69 141 78 <br /> #12 118 71 131 78 143 94 <br /> #14 132 70 145 88 157 105 <br />Wood Lag Screw Loads <br />Using Southern Pine S.G., 0.55 or Eauivalent 1-1/2" Thickness <br />Screw Diameter Shear (Ibs.) Double Shear Withdrawal <br />fibs.) Ilbs.) <br /> 1/4" 170 235 '396 <br /> 5/16'. 210 355 624 <br /> 3/S" 240 480 712 <br />Concrete Screws And Bolts In Concrete, Brick or C.M.U. <br />(Embedment Must Be a Minimum of 1.1/2" Thickness With 1.1/4" From Edge) <br /> 2,000# Concrete 3,000# Concrete <br />Screw Diameter Te nsion Shear Te nsion Shear <br />fibs.) fibs.) <br /> 1/4" 757 319 825 352 <br /> 5/16" 1,057 818 1,184 898 <br /> 3/8" 1,443 1 ,443 1,776 1,503 <br />Aluminum Rivets with Aluminum Mandrei** <br />Screw Diameter Te nsion Shear <br />fibs.) <br /> 1/S" 129 176 <br /> 5/32" 187 263 <br /> 3/16" 262 375 <br />Aluminum Rivets with Aluminum Mandrel <br />Screw Diameter Te nsion Shear <br />Ilbs.) <br /> 1/S" 210 325 <br /> 5/32" 340 490 <br /> 3/16" 445 720 <br />* Screw goes through t'M> sides of members. <br />. ** All barrel lengths; Celus Industrial Quality, Use manufacturers grip range to match total wall thickness <br />of connection, Use chart. 'fo Select screw U.S. rivet substitution of anchor specifications in drawings. <br /> Lawrence E. Bennett, P.E. <br /> aw. ENG/#EER - De\IEl.QPI&IT CONSU.TANr <br /> P.o. BOX 4388, SOUTH DAYTONA, Fl. 32121 <br /> TB..EPHCltE (804) 7fJ7-4774 <br /> FAX (1104) 787-8558 <br /> SEAL <br />@ COPYRIGHT 1998 PAGE <br />NOT TO BE REPRODUCED N WHOlE OR N PART WITHOUT TIE WFITTEN PERMSSION OF LAWRENCE E BENETT, P.E. 143 <br />