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Project: Muir Chase Plumbing Santa <br />Date: 7/29/ <br />Summary of Ballast Calculations: <br />Number of PV Modules: 72 Modules <br />Number of Bays: 93 Bays <br />Number of Positive Attachments: 5 attachments <br />Number of ballast blocks: 172 blocks <br />Block type: 4x8x16 (Nominal) CMU Cap Block <br />Block weight, W = 32.5 lb <br />CITY OF SANTA ANA <br />'la ft*V a0Z4QggtM!)g Agency <br />I Engineer: PZSE <br />Approved <br />FOR PERMIT ISSUANCE <br />Master ID. <br />Date: <br />The block weight is a critical component of these calculations. If the actual block weight(s) differ from that shown here, these <br />calculations shall be considered invalid. Please contact PZSE so that accurate ballast counts may be provided. <br />Weight of PV Modules & racking: 4,440 lb <br />Weight of Ballast: 5,590 lb <br />Total weight of PV system: 10,030 lb <br />Summary by Roof: <br />Area covered by PV system: 2,044 Sq. ft <br />Average PV system dead load: 4.9 psf <br /># of <br /># of <br /># of <br /># of <br />PV Area <br />Average <br />Max Bay <br />Roof Name <br />Modules <br />Bays <br />Blocks <br />Attachments <br />(Sq- ft) <br />Weight (psf) <br />Weight (lb) <br />Roof 1 <br />72 <br />93 <br />172 <br />5 <br />2,044.1 <br />4.9 <br />156.1 <br />Summary by Section: <br />Section Name <br /># of <br />Modules <br /># of <br />Bays <br /># of <br />Blocks <br /># of <br />Attachments <br />Array Area <br />(Sq. ft) <br />Average <br />Weight (psf) <br />Max Bay <br />Weight (lb) <br />Roof 1 Arr 1 <br />72 <br />93 <br />172 <br />5 <br />2,044.1 <br />4.9 <br />156.1 <br />Totals: 72 93 172 5 2,044 <br />Note: Print order for large array calculations is "RIGHT THEN DOWN" <br />1 <br />2 <br />3 <br />4 <br />5 <br />6 <br />7 <br />8 <br />9 <br />Page 8 of 20 <br />