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Project: Ross Durant I -- Job #: 2025-04579 <br />Date: 7/29/2025 Engineer: DF <br />Number of PV Modules: 100 Modules <br />Number of Bays: 148 Bays <br />Number of Positive Attachments: 18 attachments <br />Number of ballast blocks: 112 blocks <br />Block type: 4x8x16 (Nominal) CMU Cap Block <br />Block weight, W =32.5 lb <br />Weight of PV Modules & racking: 6,003 lb Area covered by PV system: 2,762 Sq. ft <br />Weight of Ballast: 3,640 lb Average PV system dead load: 3.5 psf <br />Total weight of PV system: 9,643 lb <br />Summary by Roof: <br />Roof Name # of <br />Modules <br /># of <br />Bays <br /># of <br />Blocks N/A # of <br />Attachments <br />PV Area <br />(Sq. ft) <br />Average <br />Weight (psf) <br />Max Bay <br />Weight (lb) <br />Roof 1 52 76 58 0 9 1,436.2 3.5 85.8 <br />Roof 2 48 72 54 0 9 1,325.7 3.5 85.8 <br />Summary by Section: <br />Section Name # of <br />Modules <br /># of <br />Bays <br /># of <br />Blocks N/A # 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 52 76 58 0 9 1,436.2 3.5 85.8 <br />Roof 2 Arr 1 48 72 54 0 9 1,325.7 3.5 85.8 <br />Totals: 100 148 112 0 18 2,762 <br />1 2 3 <br />Summary of Ballast Calculations: <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 />Note: Print order for large array calculations is "RIGHT THEN DOWN" <br />4 5 6 <br />7 8 9 <br />Page 8 of 29