Roof zones, GCp by roof type, and uplift on coverings and attachments under ASCE 7-22. One C&C Roofs Bundle unlocks all six roof types — flat, gable, hip, monoslope, multi-span, and sawtooth.
Every plan unlocks all six ASCE 7-22 roof types. Pick the seat count you need and start with a 7-day free trial — no credit card required.
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A focused ASCE 7-22 tool for roof component-and-cladding wind pressures.
ASCE 7-22 divides each roof into pressure zones. The calculator maps every zone and applies the right coefficient automatically.
All six roof types — flat, gable, hip, monoslope, multi-span, and sawtooth — use different external pressure coefficients. Pick the type and the calculator loads the correct ASCE 7-22 Chapter 30 set.
Get net uplift on roof coverings and attachments by zone, with the edge-strip width a sized for you per code.
From roof geometry to permit-ready Engineering Report in minutes.
Enter the address. Design wind speed comes from the project location.
Choose from all six types — flat, gable, hip, monoslope, multi-span, or sawtooth — then set the roof slope.
Set plan dimensions and mean roof height. Dimension a is computed.
Get corner, edge, and interior uplift, then export the Engineering Report.
Size fastener spacing and attachments to net uplift by zone. Submit clean documentation with every reroof.
Run roof C&C pressures fast, with every GCp value traced to its ASCE 7-22 section.
Specify roof coverings and edge details against real wind pressures during design.
Review roof uplift submittals against a consistent, transparent ASCE 7-22 format.
Verify covering and attachment uplift on existing roofs after storm damage.
Match roof covering and fastener systems to the pressures a project demands.
Explore the rest of the ASCE 7-22 calculator family.
Components & cladding for vertical walls and openings.
Photovoltaic systems and mounting configurations.
Browse the full ASCE 7-22 catalog and pricing.
All six roof types under ASCE 7-22 Chapter 30: flat (low-slope), gable, hip, monoslope, multi-span, and sawtooth. Every C&C Roofs plan unlocks every roof type. Each uses its own external pressure coefficient (GCp) sets and zone layouts, and parapets and overhangs are included where the standard requires separate checks.
ASCE 7-22 splits each roof into corner, edge, and interior zones. Suction peaks at corners and edges, so those zones carry the highest uplift. The calculator maps every zone and applies the correct GCp for each.
The width a is the smaller of 10 percent of the least horizontal dimension or 0.4 times the mean roof height, but not less than the code minimum.
Florida projects use a 4 ft minimum per FBC; elsewhere the ASCE 3 ft minimum applies.
Yes. The tool reports net uplift pressures on roof coverings, fasteners, and attachments by zone, using the effective wind area you enter. That drives fastener spacing and attachment design decisions.
Yes. The roof calculator is built on ASCE 7-22, the latest published edition. Every coefficient traces back to its standard section, so reviewers can follow each value.
Yes. The output is a detailed Engineering Report with inputs, zone diagrams, GCp values, and pressures, exportable to PDF, Excel, CSV, or print. PE sign-and-seal is available in all 50 states through our engineering network.
C&C Roofs comes in three plans that all unlock every roof type: Starter at $28/mo (billed annually at $336/year), Pro at $47/mo ($564/year), and Premium at $119/mo ($1,428/year). Start a 7-day free trial, add a plan to your cart, and cancel anytime.
The C&C Roofs Bundle is live — every ASCE 7-22 roof type in one subscription. Start a 7-day free trial, or run our free wind speed lookup first.