Biloxi Wind Pressure & DP Rating Calculator

Estimates the design wind pressure acting on a window, door, or shutter opening in the Biloxi coastal wind zone, following ASCE 7 velocity-pressure methods. Educational estimator — a licensed engineer must verify final design pressures.

Basic wind speed V (mph, 3-sec gust) 150 mph — Biloxi coast, Risk II (ASCE 7-16) 160 mph — Risk III/IV coastal 140 mph — inland Harrison/Jackson Co. 130 mph — northern MS Custom… Mean roof height h (ft) Exposure category C — open terrain / coastal (typical Biloxi waterfront) B — suburban with houses/trees Opening location Zone 5 — near a building corner (edge strip) Zone 4 — mid-wall interior Envelope status during the storm Sealed — windows/doors intact (GCpi ±0.18) Breached — one opening lost (GCpi ±0.55) Calculate Pressure

Estimated wind pressure on your openings

Velocity pressure q_h = psf (at roof height ft, exposure , K_z=)

Demand	Zone 4 mid-wall	Zone 5 corner
Outward suction (negative)
Inward pressure (positive)

Method: q_h = 0.00256·K_z·K_zt·K_d·K_e·V² (K_zt=1 flat site, K_d=0.85, K_e=1 sea level). Wall C&C coefficients per ASCE 7 Fig 30.4-1 for ~10-20 SF effective area (Zone 4 ≈ +0.9/−1.2, Zone 5 ≈ +0.9/−2.4). Estimates only — verify with the product's Miami-Dade NOA / TAS 201 rating and a licensed engineer.