Laserfiche WebLink
PROJECT <br />PROJECT NO. <br />ITEM <br />McGuff TI <br />RTU Unit Anchorage ENGINEER <br />DATE <br />SHEET NO. <br />CL <br />S24-0254 <br />Wood Lag Screw Design <br />Design Criteria <br />R α <br />Load: 265 lb @ 43.7 °Vector Load from V b and T b <br />Main Member Species:Douglas Fir-Larch <br />Main Member Thickness:7-1/2 in <br />Side Member Thickness:1/4 in <br />G = 0.50 Specific gravity <br />D = 0.5 in Diameter of lag screw <br />L = 4 in Length of lag screw <br />pz =3.44 in Shear penetration <br />pw =2.19 in Withdrawal penetration <br />From Table Z multiplier (Note 3) <br />Z =320 x 0.8594 Ref. NDS-2018 Table 12J - 11K <br />Allowable Lateral Load Capacity Ref. NDS-2018 Table 11.3.1 <br />Z CD CM Ct Cg C∆Ceg Cdi Ctn <br />Z' =275 1.6 1 1 1 1 1 1 1 =440 lb <br />Allowable Withdrawal Load Capacity Ref. NDS-2018 Table 11.3.1 <br />W CD CM Ct Ceg Ctn <br />W' =378 1.6 1 1 1 1 = 605 lb/in <br />W' x pw = 1324 lb <br />Allowable Vector Load Capacity Demand / Capacity Ref. NDS-2018 §12.4.1 <br />Z'α = 645 lb OK Ref. NDS-2018 Eq.12.4-1 <br />Use 1/2'' diameter 4'' long lag screw <br />Douglas Fir-Larch <br />0.5 <br />4 <br /> BRANDOW & JOHNSTON STRUCTURAL & CIVIL ENGINEERS | LOS ANGELES NEWPORT BEACH <br />"TYPE 2 ANCHORAGE" - CONTROLS DESIGN