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Job Name: Muller Santa Ana <br />Job Number: 2021-SRS004 <br />Date: 11/9/21 <br />Lateral Check of Existing Structure: <br />The existing parking garage has a weight at the upper deck as follows: <br />̗Wdeck =Έ89.7psf 47300 ft2 ⎛⎝Έ4.243 10 3 ⎞⎠ kip <br />The base shear attributable to the top deck of the concrete garage is as follows <br />(conservative as the top deck would receive more based on vertical distribution of the <br />total base shear per ASCE Section 12.8.3): <br />, ̗Cs 0.27 ̗Vgarage =ΈCs Wdeck ⎛⎝Έ1.146 10 3 ⎞⎠ kip <br />The total maximum base shear of the canopy from RISA in either principal direction is: <br />̗Vcanopy 91.8 kip <br />The increase in lateral loading is as follows: <br />< 10% =―――Vcanopy <br />Vgarage <br />0.08 <br />=>Lateral system of existing garage is OK in accordance with California Existing <br />Building Code. <br />Page 6 <br />2677 N Main St - <br />101110159-60 & <br />20175958-5902/07/23