Identify the building & engineer of record. The address (with ZIP) drives the Velocity Finder on the next step.
💡 Need help?
Enter the project address including the ZIP code — that's what the Velocity Finder uses to look up your ASCE 7-22 design wind speed (with local jurisdiction overrides). Name, company, client, job #, and engineer appear on the Engineering Report header. Your state and jurisdiction (and the building-code edition note) are detected automatically from the address — no need to enter them.
Wind Parameters
Pick the design basis, then find the wind speed for your location — our database, with jurisdiction overrides.
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Risk Category sets importance — II for most buildings; III/IV for hospitals, schools, emergency facilities. Find Wind Speed takes a ZIP or address (it auto-fills from your Step-1 Project Address) and applies ASCE 7-22 + local overrides, showing the design speed for each Risk Category (override manually if needed). Ultimate (LRFD) is strength-level; Nominal (ASD) is service-level. Exposure: B = urban/wooded, C = open (common), D = flat/coastal. Enclosure per §26.12. Elevation adjusts Ke (negligible near sea level).
Risk Category
I
Low hazard
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II
Standard
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III
Substantial hazard
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IV
Essential facility
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Velocity Finder — ZIP / Address → Design Wind Speed for your Risk Category
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✓ Set as your design wind speed V · each Risk Category card shows its own speed
If the automated velocity for your Risk Category isn't accurate, override it in the Design Wind Speed field below. You can also open the official ASCE 7 Hazard Tool ↗. If it's correct, no action needed.
Above sea level (Ke)
Speed Type
Ultimate
LRFD (strength)
Nominal
ASD (allowable)
Exposure Category
B
Urban / Suburban
C
Open Terrain
D
Coastal / Flat
Enclosure Classification
Enclosed
Partially Open
Partially Enclosed
Open
Building Geometry
Plan dimensions, height, and roof slope. Low-rise only — mean roof height h ≤ 60 ft (ASCE 7-22 §28.3).
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B and L are the two plan dimensions. Mean roof height h = average of eave and ridge (use eave for slopes ≤ 10°); the Envelope Procedure is limited to h ≤ 60 ft. Roof slope is X/12 rise-over-run, shown in degrees — it selects the (GCpf) row in Fig 28.3-1. The Envelope Procedure produces pseudo-external pressures on all 8 surfaces for 4 load cases (Fig 28.3-1); MWFRS members are governed by the worst applicable load case.
Plan dimension
Plan dimension
≈ 18.4°
Topographic Effects
Wind speed-up over hills, ridges & escarpments — ASCE 7-22 §26.8 (factor Kzt).
💡 Need help?
Flat terrain → no speed-up (Kzt = 1.0). For a 2D ridge, 3D axisymmetric hill, or escarpment, enter the feature height H, the half-length Lh (crest to where the ground is half of H), and x (distance from the crest to the building — upwind negative, downwind positive). Leave as Flat for level sites. This factor feeds qh = 0.00256·Kz·Kzt·Kd·Ke·V².
Site Topography
Flat
No speed-up
2D Ridge
Long ridge
3D Hill
Axisymmetric
Escarpment
Cliff / step-up
Hill / ridge / escarpment height
Crest → half-height point
Crest → building (±)
Calculator
Pseudo-pressures on all 8 surfaces for the 4 load cases per ASCE 7-22 Chapter 28 (Envelope Procedure, Fig 28.3-1).
💡 Need help?
Calculate gives the design pseudo-pressures p = qh·[(GCpf) − (GCpi)] (Eq. 28.3-1) on each surface (1–4 walls, roof, and the end zones 1E–4E) for all four load cases of Fig 28.3-1, using your wind parameters, geometry, and the topographic factor Kzt. Each surface is shown at both internal-pressure signs (GCpi = ±0.18). Continue to Wind Report for the permit document.
Wind Report
Permit-ready Engineering Report — building code & ASCE 7-22 reference added automatically from the project State.
💡 Need help?
Generate the Engineering Report from your inputs and results, then Print / Download it, or use ☁ Save in the header to store the project to your account. Run Calculate on the previous step first.