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<br /> <br /> <br /> <br /> <br /> <br />3rd & Broadway, Santa Ana, CA <br />Volume 2 - Structural Calculations June 17, 2024 | Project # S21043.00 <br /> pg. 2 <br />TABLE OF CONTENTS <br />4.0 ETABS MODELS ............................................................................................................................................. 5 <br />4.1 INTRODUCTION .......................................................................................................................................... 6 <br />4.2 DESCRIPTION OF THE ETABS MODELS .................................................................................................. 7 <br />4.2.1 MODEL STIFFNESS .............................................................................................................................. 25 <br />4.2.2 MASS AND GRAVITY LOADING ........................................................................................................... 26 <br />4.2.3 DETERMINATION OF THE MODAL PERIODS OF STRUCTURE ........................................................ 27 <br />4.2.4 ETABS MODEL INPUT FILES ............................................................................................................... 37 <br />4.2.5 ETABS WIND VS SEISMIC RESPONSE ............................................................................................... 38 <br />4.3 VERIFICATION OF BUILDING WEIGHT AS REPORTED BY ETABS (HAND VERIFICATION) ............... 43 <br />4.4 ETABS RESULTS: VERIFICATION OF HORIZONTAL IRREGULARITIES ............................................... 48 <br />4.4.1 REDUNDANCY CHECK FOR RESIDENTIAL BUILDING AND HOTEL BUILDING .............................. 49 <br />4.4.2 TORSIONAL IRREGULARITY CHECK .................................................................................................. 50 <br />4.4.3 ASCE 7-16 BUILDING HEIGHT INCREASE ALLOWANCE CHECK ..................................................... 54 <br />4.5 ETABS RESULTS: VERIFICATION OF VERTICAL IRREGULARITIES .................................................... 57 <br />4.6 ETABS RESULTS: VERIFICATION OF BUILDING DRIFT ........................................................................ 58 <br />4.6.1 RESIDENTIAL BUILDING ...................................................................................................................... 59 <br />4.6.2 HOTEL BUILDING ................................................................................................................................. 64 <br />4.7 ETABS RESULTS: SUMMARY OF WALL SHEAR STRESSES (FOR REFERENCE ONLY) ................... 68 <br />4.7.1 RESIDENTIAL BUILDING ...................................................................................................................... 69 <br />4.7.2 HOTEL BUILDING ................................................................................................................................. 73 <br />4.8 ETABS RESULTS: SUMMARY OF COUPLING BEAM SHEAR STRESSES (FOR REFERENCE ONLY)76 <br />4.8.1 DESIGN PROCEDURE .......................................................................................................................... 76 <br />4.8.2 COUPLING BEAM DESIGN – RESIDENTIAL BUILDING ..................................................................... 78 <br />4.8.3 COUPLING BEAM DESIGN – HOTEL BUILDING ................................................................................. 80 <br />5.0 FOUNDATION DESIGN ................................................................................................................................. 82 <br />5.1 INTRODUCTION ........................................................................................................................................ 83 <br />5.2 SOIL BEARING PRESSURE ANALYSIS AND SOIL SUBGRADE REACTION ......................................... 84 <br />5.2.1 SOIL SUBGRADE MODULUS ............................................................................................................... 84 <br />5.2.2 SOIL BEARING PRESSURE ................................................................................................................. 85 <br />5.3 MAT FOUNDATION DESIGN ..................................................................................................................... 87 <br />5.3.1 INTRODUCTION .................................................................................................................................... 87 <br />5.3.2 APPLIED LOADING ............................................................................................................................... 88 <br />5.3.3 MAT FOUNDATION DESIGN ................................................................................................................ 92 <br />5.4 BASEMENT WALL DESIGN .................................................................................................................... 135 <br />6.0 APPENDIX .................................................................................................................................................... 143