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0 <br />0 <br />Reaction 1= 1093.75/15 + 50x15/2= 448 <br />Reaction 3 =1093.75/10 + 50x10/2= 359 <br />R2= 50x25- 448-359= 443 <br />Load on family room beam is 443 lbs per foot = 36.91 lbs per inch <br />Deflection = 213/360 0.59 inch <br />SHEET 2,� <br />I = 5 x 36.91 x 2134/384x2,000,000 x 0.59= 838 in = bh3/12 h =12.38 use 5.25 inch x 13 I <br />inch 3 piece LVL bolted together with 2 rows @ 12" centers of Simpson SDS25412 woad <br />screws <br />LENGTH OF LIVING ROOM BEAM 1S 225 INCHES OR 18.75 FEET <br />The floor joists are about 31 feet long and the unequal spans are 200 inches and 169 inches or <br />16.67 feet and 14.08 feet There is a 11 foot high partition wall which is located 161 inches <br />from the front wall or 13.42 feet. This weighs 64 lbs per foot of wall. Break down the problem <br />into two parts. <br />M= 50 x 14.083 + 50 x 16.673/ 8 x ( 14.08 + 16.67 ) = 2450 ft lbs per foot <br />Reaction 1= 2450/16.67 + 50 x 16.67/2= 563.72 pounds <br />Reaction 3 = 2450/14.08 +50x14.08/2 = 526 pounds <br />Reaction 2 at beam 30.75 x 50-563.72-526= 447.78 lbs <br />Second part of load on beam is point load at 13.42 feet from front wall. <br />Reaction 1 = pb/I 64 x 16.67/30.75= 35 lbs <br />Total load on beam is 447.78 + 35= 482.78 say 483 lbs per foot or 40.25 lbs per inch <br />Required moment of inertia I for beam which is 225 inches long allowable deflection <br />= 225/360= 0.625 inches Using laminated LVL's which are 1.75 inches thick <br />I = 5 x 40.25 x 2254/ 384 x 2,000,000 x 0.625= 1074.5=bh3/12 let b = 3.5 inches then h=15.4 <br />inches. Use 2 LVL's bolted together with 2 rows @ 12 inch centers of Simpson SDS25312 wood <br />screws. <br />UPLIFT FROM WIND house area plan view 2429 sf roof area = 2895 sf plan view `1116,1 4�.019 <br />2895- 2429= 466 sq eave area <br />110 miles per hour wind speed. Basic force = 31 psf =qs <br />Exposure C Ce=1.3 for height less than 40 feet <br />