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Project: Ross Durant I -- Job #: 2025-04579 <br />Date: 10/30/2025 Engineer: DF <br />Description Value Unit (ASCE 7-16) <br />Anchor type: <br />Design Uplift Capacity 505 lbs <br />Design Lateral Capacity 820 lbs <br />Roof Deck Material <br />Fasteners <br />Anchor Plate tension load (Ult.)1211 lbs <br />Anchor Plate shear load (Ult.)1968 lbs <br />Factor of Safety =2.4 <br />Anchor Plate ASD tension capacity 505 <br />Anchor Plate ASD shear capacity 820 <br />Wood screw number:#12 <br />Diameter of Screw =0.22 inch <br />Minimum Embedment =0.50 inch <br />Withdrawal tension capacity =315 lbs (APA E830) <br />Shear Capacity=590 lbs (APA E830) <br />Duration factor (wind) =1.6 (NDS Table 2.3.2) <br />Factor of Safety =3 <br />Screws per conn. point =4 <br />Connection Capacity = No. screws per conn. x screw capacity x Duration factor <br />Connection Tension Capacity =672 lbs <br />Connection Capacity =No. screws per conn. x screw capacity x Duration factor <br />Connection Shear Capacity =1259 lbs <br />Shear Check <br />ANCHOR PLATE CAPACITY CALCULATION <br />Metal Anchor Capacity <br />Plywood Connection Capacity <br />Basic Info <br />Note: The anchors are proportioned by first determining the ASD capacity of the anchor. <br />To determine the number of anchors required for each array, the anchorage demand is divided by the <br />anchor capacity to determine the minimum number of anchors for that array. <br />U-Anchor 2400 (mechanically attached) <br />1/2" Plywood deck <br />#12 Wood Screws <br />Anchor Plate Test Values: <br />Tension Check <br />Screw Test Values: <br />Page 4 of 29