Wind Load Engineering Platform
Components & Cladding — Windows / Doors / Storm Shutters
·…▾
ENGINEERING MODE
Project Information
Identify the building & the engineer of record
?Need help?
Tip: Enter the project address with a ZIP — we'll use it on the next step to look up the design wind speed automatically. Project / company / engineer fields appear on the sealed report.
Wind Parameters
Pick the design basis, then find the wind speed for your location — our database, with jurisdiction overrides
?Need help?
Risk Category: II = standard buildings; III/IV = substantial-hazard / essential facilities. Exposure: B urban/suburban, C open terrain, D coastal. Speed Type: Nominal (ASD) or Ultimate (LRFD). Then the Velocity Finder below returns the ASCE 7-22 design speed for your selected Risk Category — including local overrides (Collier 170, Miami-Dade 175, FBC). The found value becomes your design V automatically; override it only if needed.
Risk Category i
I
Low hazard
—
II
Standard
—
III
Substantial hazard
—
IV
Essential facility
—
Exposure Category i
B
Urban / Suburban
C
Open Terrain
D
Coastal / Flat
Speed Type i
Ultimate
LRFD (strength)
Nominal
ASD (allowable)
Velocity Finder — ZIP / Address → Design Wind Speed for your Risk Category
—
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 ↗ to look up the wind speed by address — it opens right inside this app. If the automated velocity is correct, no action needed.
Building Geometry
Building dimensions set the edge-strip and velocity pressure
?Need help?
Mean Roof Height (h) is the average of the eave and ridge heights (for a flat/low-slope roof, just the roof height above grade). It drives the velocity pressure qh = 0.00256·Kz·Kzt·Kd·Ke·V² and sets the exposure-coefficient Kz. Building width/length set the edge-strip dimension a = 10% of the least horizontal dimension or 0.4h (min 3 ft). Enclosure sets the internal pressure GCpi.
Mean Roof Height — visual reference
Topographic Effects
Wind speed-up over hills, ridges & escarpments — ASCE 7-22 §26.8 (factor Kzt)
?Need help?
Pick the site topography. Flat terrain → no speed-up (Kzt = 1.0). For a 2D ridge, 3D axisymmetric hill, or escarpment, enter the feature height H, half-length Lh, and distance from the crest x — the animation shows the wind flow for the selected feature.
Site Topography
Flat
No speed-up
2D Ridge
Long ridge
3D Hill
Axisymmetric
Escarpment
Cliff / step-up
Components & Pressures
Add each window / door / shutter — design pressures auto-calculate and update live
?Need help?
Add a row per component. Each row's effective wind area and ± design pressures recompute instantly as you type. Zone 4 = interior wall, Zone 5 = corner (within the edge strip a). Drag ⠿ to reorder rows.
Zone Guide — Edge Strip (dimension a) i
Zone 5 — corners (within a of a building corner): highest suction
Zone 4 — wall field (away from corners): lower than corners
The edge-strip dimension a = the lesser of 10% of the least horizontal dimension or 0.4h, but not less than 4% of the least horizontal dimension or the code minimum: 3 ft (ASCE 7-22). Components within a of a corner are Zone 5; all other wall components are Zone 4. Corner components see higher design pressures — set each row's Zone with the ▲▼ arrows.
| # | Mark | Type | Description | W (in) | H (in) | Zone | EG i | Effective Wind Area | P(+) psf | P(−) psf | Lib i |
|---|
Wind Load Report
Engineering Report & Architectural Schedule — generated from the live schedule
🛡 Product Certifications (optional — adds a Product Certification Summary to the report, with PASS/FAIL vs. required pressure)
▾