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7.0 Design Loads - Seismic (Cont.):
<br />7.4 Vertical Seismic Force Check:
<br />Mechanical attachments may be required for several reasons including building code, roof load limits and array shape. The table
<br />below provides the mechanical attachment requirements for each sub-array within this project.
<br />Nomenclature:
<br />WP = Sub-Array Weight
<br />FPV = Vertical Seismic Force
<br />FRV = Vertical Seismic Resisting Force
<br />Array Information Vertical Force Verification Results
<br />Sub-
<br />Array
<br />Name
<br />WP
<br />(lbs.)
<br />FPV
<br />(lbs.)
<br />FRV
<br />(lbs.)
<br />0.7 FPV -
<br />FRV (lbs.)
<br />MA's
<br />Required
<br />Total MA
<br />Capacity
<br />(lbs.)
<br />Total
<br />MA's
<br />Provided
<br />Acceptable
<br />1.1 1,600 334 960 -726 0 2,940 9 Yes
<br />1.2 3,888 812 2,333 -1,764 0 3,998 13 Yes
<br />1.3 11,380 2,378 6,828 -5,163 0 7,623 23 Yes
<br />1.4 12,264 2,563 7,359 -5,565 0 4,005 12 Yes
<br />1.5 11,153 2,330 6,692 -5,060 0 3,860 11 Yes
<br />1.6 9,889 2,066 5,934 -4,487 0 3,088 10 Yes
<br />1.7 9,778 2,043 5,867 -4,437 0 3,443 10 Yes
<br />1.8 8,254 1,725 4,952 -3,745 0 3,441 10 Yes
<br />Total:68,206 lbs.14,252 lbs.40,924 lbs.-30,947 lbs.0 32,397 98
<br />Table7.2 - Summary of Mechanical Attachment Requirements
<br />* MA's Required = 0.7 FPV - FRV/MA strength
<br />07/09/2024
<br />15
<br />PanelClaw, Inc., 1600 Osgood Street, Suite 2023, North Andover, MA 01845
<br />(978) 688.4900 - www.panelclaw.com
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