Laserfiche WebLink
PROJECT PROJECT NO.NO. <br />SUBJECT BY DATE <br />OF <br />The following values will control over the individual capacity of the steel bolts/screws <br />The shear force on a screw shall not exceed the least of: <br />1) 2 D <br />t1 =lb 3) <br />=lb <br />where, <br />= ksi where, <br />=ksi <br />D= in <br />=in D=in <br />=in <br />= <br />= <br />2) 2 D <br />t2 =lb <br />where, <br />= ksi <br />D= in <br />=in <br />= <br />Pull-Out <br />The nominal pull-out strength, Pnot for pulling a screw out of a threaded part, is: <br />1)For tc <= 0.125 in <br />Ks D tc =lb <br />where, <br />=in <br />= ksi <br />Ks = <br />Blaney Engineering, Inc.CMH Solutions, Inc.2016_019 <br />1040 Woodcock Road <br />Suite 214 <br />Orlando, FL 32803 <br />Tel: 407.849.8910 Fax: 407.849.8910 <br />offices@blaneyengineering.com <br />Pelican Community Park <br />Miami-Dade County, FL <br />3/8" Bolt Capacity <br />12 Gage corner to 1/4" Steel SYB 5/12/2016 <br />Ftu1 1185 for t2 <= t1 <br />nu 4.2 (t2 <br />3D)1/2 Ftu2 6216 <br />ns <br />Ftu1 (Sheet Steel)58 <br />Tensile ultimate strength of member in <br />contact with screw head <br />Ftu2 (1/8" stl)58 <br />Tensile ultimate strength of member <br />not in contact with screw head0.3750 <br />t1 (thickness of member <br />in contact with the screw <br />head) <br />0.109 0.3750 <br />t2 (thickness of member <br />not in contact with the <br />screw head) <br />0.25 <br />nu (factor of safety on <br />ultimate strength) <br />4 <br />ns (safety factor)3 <br />Ftu2 2719 <br />nu <br />Ftu2 (1/8" stl) 58 <br />Tensile ultimate strength of member <br />not in contact with screw head <br />0.3750 <br />t2 (thickness of member <br />not in contact with the <br />screw head) <br />0.25 <br />nu (factor of safety on <br />ultimate strength) <br />4 <br />Fty2 4050 <br />tc is depth of full thread engagement of <br />screw into t2 not including tapping or <br />drilling point <br />0.25 <br />Fty2 (1/8" stl) 36 <br />Tensile yield strength of member not in <br />contact with the screw head <br />1.2 <br />Pelican Community Park <br />City of Sunny Isles Beach, FL <br />Page 16 of 19