🪜 C12x20.7 Stringer Channels, 12-Ga Concrete-Filled Pans & IBC Egress Codes

Commercial Steel Stair & Stringer Calculator

Size multi-story commercial steel egress stairs and pan treads under the International Building Code (IBC) and NAAMM: calculate structural stringer channels (C10x15.3 / C12x20.7), 12-gauge bent sheet steel concrete-filled pan treads, intermediate landings, 1-1/2" pipe guardrails, and misc metals shop margins.

1. Project & Operating Inputs

Total Stair Flights Fabricated (Flights e.g. 12 Flights / 6 Stories)

Flight Floor-to-Floor Rise (Feet e.g. 12 ft Rise)

Customer Invoiced Bid Price per Flight ($ / Flight e.g. $8,500)

Channel Stringers, Pan Treads, Railings, Concrete Fill & Erectors ($ / Flight)

2. Financial Breakdown & Yield

IBC COMMERCIAL STEEL STAIRS

Turnkey Stair Flight Gross Profit

Misc Metals Fabricator Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost