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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 />Specified compressive strength of masonry F'm is 1500 psi <br />Net area compressive strength of block units is 1900 psi <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 />= 4387 pounds <br />= 2193 pounds <br />2052.227 <br /> <br />Shearwall Number 1 : <br />Shearwall length <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 shearwall x 2/3 <br />Net uplift tension for shearwall action <br />Normal uplift on exterior bearing wall <br /> <br />= 96 inches <br />= .5 <br />= 1096 pounds <br />= 7.333333 feet <br />= 8041 ft-pounds <br />= 753 plf <br />= 448 plf <br />= 305 plf <br />= 2723 pounds <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 />= 8041 ft-pounds <br />= .3067969 sq. in. <br />= 42.54603 inches <br />= 49.20397 inches <br />= .864687 <br /> <br />for each grouted cell <br /> <br />Actual = 9683 psi <br />Actual = 50 psi <br />Actual = 5 psi <br /> <br />Allowable = 26666 psi <br />Allowable = 666 psi <br />Allowable = 49 psi <br /> <br />Required lap splice = 25 inches <br /> <br />*** Summary of Analysis *** <br />Shearwall COMPLIES with all Code requirements. <br />