Force-based wind analysis for the specialty appurtenances still in development — parapets (§30.6) and attached canopies (§30.9). The six core ASCE 7-22 Chapter 29 calculators are already live under Other Structures.
ASCE 7-22 Chapter 29 structures, each handled with its own force-based procedure.
Wind pressure on the parapet itself.
Open-roof and attached-canopy structures.
These structures carry wind differently from a building, so they need a different method.
A freestanding sign or rooftop unit is an isolated body. It does not use building wall and roof pressure coefficients.
Chapter 29 applies a force coefficient (Cf) to the projected area. The result is a net force, not a zone-by-zone pressure map.
Clearance, solidity ratio, slenderness, and cross-section shape each change Cf. Small geometry changes shift the load.
Specialty is its own category — separate from MWFRS Building and from Components and Cladding. Subscribe to what you need.
Every coefficient cites its Chapter 29 section. Building officials can follow each step in the Engineering Report.
PE sign-and-seal is available in all 50 states through our licensed network, routed by project location and scope.
The same guided flow as our live calculators, tuned for Chapter 29.
Choose a sign, wall, rooftop unit, parapet, canopy, or chimney type.
Automatic design wind speed from the project location, or enter it manually.
Dimensions, clearance, and exposure. The tool selects the right force coefficient.
Get a permit-ready Engineering Report in one click. Request a seal if needed.
Join the waitlist and we'll email you the moment the Specialty Structures calculator goes live — with early access and launch details.
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ASCE 7-22 Chapter 29 structures: freestanding solid signs and walls, open signs, rooftop equipment and rooftop screens, parapets, canopies, and chimneys, tanks and similar structures. These stand on their own — they are not part of a building's MWFRS.
Specialty structures use force coefficients (Cf) and the Chapter 29 procedures rather than building wall and roof pressure coefficients. A freestanding sign or rooftop unit carries wind as an isolated body, so it gets its own force-based calculation.
ASCE 7-22, the current edition. Every coefficient traces to its Chapter 29 section so reviewers can follow the math. We provide the latest standard rather than older editions.
Yes. The tool generates a professional Engineering Report with inputs, coefficients, and step-by-step results in PDF, Excel, CSV, and print. Reports follow the same trusted format as our live Components and Cladding calculator.
Yes. PE sign-and-seal is available in all 50 states through our licensed engineering network, routed by project location and scope. Request it after running your calculation.
Join the waitlist on this page. We'll email you the moment the Specialty Structures calculator goes live, with early access and launch details. No payment is required to join.
The Specialty calculator is launching soon. In the meantime, our team can run the analysis and our engineering services include PE sign-and-seal in all 50 states.