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<br />Brown Residence <br /> <br />Height: 0-15 15-20 20-40 40-60 Total <br />Resisting Moment: 4310.8 4310.8 4310.8 4310.8 4310.8 <br />x 2/3 = 2873.9 2873,9 2873.9 2873.9 2873.9 <br />Uplift Moment: 0.0 -2199.9 0.0 0.0 -2199.9 <br />lIz. Pres. Moment : -204.4 -174.1 -66.6 0.0 -445.0 <br />Overturning Mmt. = -204.4 -2374,0 -66.6 0.0 -2644.9 <br /> <br />Note: If OM < 2/3 RM, hold-downs are not required. <br /> <br />Required tie-down force (T): <br /> <br />( Factor of Safety 'built in' to Mfr's tables.) <br /> <br />Therefore: T x b + RM > or = OM. <br />where, b= building width. <br /> <br />T = (OM-RM) / b = I -26029 Ilbs <br /> <br />** Specify tie-down accordingly, FS 'built in' to Mfr's tables. <br /> <br />x.) Girder Uplift: <br />1.) Two (2) Point Bearing, Symmetric. <br /> <br />Girder Contrib. area (sf) Height (ft) Net Uplift (pst) Uplift per brg. <br />Girder 1 576.0 15.7 -11.2 -3225.6 <br />Girder 2 414.0 15.7 -11.2 -2318.4 <br />Girder 3 612.0 15.7 -11.2 -3427,2 <br /> <br />Girder <br />Mark <br /> <br />2.) Other configurations ie. three (3) point brg. <br />Contrib. Height (ft) <br />area (st) (Mn. roof) <br />15.7 <br />15.7 <br /> <br />Net Uplift (pst) <br />-11.2 <br />-11.2 <br /> <br />N/A <br /># Brg. <br />Points <br /> <br />Max. Uplift <br />Reaction (lbs) <br /> <br />Page 7 <br /> <br />