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<br />**** LON G I T U DIN A L <br /> <br />SHE A R W ALL <br /> <br />A N A L Y S I S **** <br /> <br />Shearwall is 8 inch concrete masonry with Type S mortar <br />Masonry compressive strength is 1500 psi on net area <br />Steel is Grade 40 , with 1--#5 in single grouted cell at each end <br /> <br />Total lateral force on building <br />Force applied at top of walls <br />Sum of shearwall stiffnesses I/L = <br /> <br />= 5116 pounds <br />= 2558 pounds <br />1342.994 <br /> <br />Shearwall Number 1 : <br />Relative stiffness percentage ratio <br />Total shear at top and bottom of wall <br />Clear height <br />Overturning moment <br />Uplift tensile stress on masonry <br />Dead load at bottom of sheaTwall x 2/3 = <br />Net uplift tension <br /> <br />= .2359508 <br />-- 603 pou nds <br />-- 7.333333 feet <br />= 4426 ft-pounds <br />= 1062 plf <br />471 plf <br />= 591 plf <br /> <br />Moment at base of shearwall <br />Area of reinforcing steel <br />Neutral axis to compression fiber = <br />Neutral axis to reinforcing steel = <br />Value of ratio <br />Bending stresses: <br />Reinforcing steel, tension <br />Concrete masonry, compression <br />Shear stress in concrete masonry <br /> <br />= 4426 ft-pounds <br />= ~3067969 sq. in~ <br />25.4274 inches <br />30.3226 inches <br />-. .8385628 <br /> <br />for each grouted cell <br /> <br />Actual = <br />Actl~al =: <br />Actual = <br /> <br />1337 psi <br />80 psi <br />10 psi <br /> <br />Allowable = 26666 psi <br />Allowable = 666 psi <br />Allowable ~ 46 psi <br /> <br />RequiTed lap splice = 25 inches <br /> <br />*** Summary of Analysis *** <br />Shearwall COMPLIES with all Code requirements. <br /> <br />----------------------------------------------------------.----------------------- <br />