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Project: Ross Durant I -- Job #: 2025-04579 <br />Date: 7/29/2025 Engineer: DF <br />Step 1: <br />South Approach <br />Roof 1 kp_MU 0.87 Anh=43 1.00 <br />Array 3 cP_MU -0.57 F_v =123 lb <br />Anv= 43 kp_MS 0.87 Ballast:25 lb <br />nesw cP_MS -0.57 F_h =25 lb <br />Sharing:1 Panels 122.6Drag Ballast:62 lb <br />Step 2:Ballast Ballast <br />North Approach 62 lb 62 lb <br />1 pnl Roof 1 kp_MU 1.04 Anh=50 1.00 1 pnl <br />n--w Array 1 cP_MU -1.16 F_v =298 lb ne-- <br />Anv= 50 kp_MS 1.04 Ballast:130 lb <br />nesw cP_MS -1.16 F_h =50 lb <br />Ballast Sharing:1 Panels 297.73Drag Ballast:206 lb Ballast <br />62 lb 62 lb <br />1 pnl 1 pnl <br />--sw -es- <br />Step 3:Blocks 920.4 Blocks <br />Output # of Blocks 2 2 <br />#REF!65 Roof Zone 1 #REF! <br />Array Zone 1 <br />#REF! <br />Blocks Blocks <br />2 2 <br />Step 4:Anchor Blocks <br />1 2 <br />Roof Zone 1 <br />#REF! 32.5 Array Zone 1 #REF!260 8 <br />0 0 0 <br />#REF! <br />Blocks Blocks <br />2 2 <br />260 8 260 8 <br />0 0 <br />Res. Up = 0 lb <br />Res. Lat. = 0 lb <br />90-180 degree wind <br />angle per IFI report <br />If Allowable weight is <br />exceeded, reduce <br />ballast. Attachments <br />represented by black <br />bays with white text and <br />the word "Anchor". <br />Sample Ballast Calculation : <br />(Note: Red numbers are input values) <br />0-90 degree wind angle <br />per IFI report. <br />Normalized area for Drag <br />Demands from North and <br />South wind approachare <br />enveloped for per-bay ballast <br />requirements. <br />Where applicable, demands <br />on skewed arrays are <br />analyzed per IFI Figure 4.15, <br />Note: Inherent load <br />combination factors are <br />determined per ASCE 7 <br />section 2.4 <br />Normalized area for Uplift <br />See wind tunnel test report for <br />definitions of roof zones, array zones, <br />Residual forces are shown to assist the <br />user placing anchors <br />Page 7 of 29