🔩 ANSI/SPRI FX-1 Field Pullout Test (Lbs), FM 1-90 / FM 1-120 Wind Uplift Grid

Roof Fastener Pullout & Wind Uplift Calculator

Size commercial roof insulation and single-ply membrane mechanical attachment under ANSI/SPRI FX-1 and Factory Mutual (FM 1-90/1-120): calculate fastener pullout ultimate load (lbs into steel deck, wood, or gypsum), safety factors (2.0 to 3.0), field/perimeter/corner fastener density, and testing margins.

1. Project & Operating Inputs

Average Measured Fastener Pullout Force (Lbs e.g. 485 Lbs)

Design Wind Uplift Pressure in Field (PSF e.g. 45 PSF)

Customer Bid Price for Engineering Field Pullout Report ($)

Calibrated Pull Tester, Tech On-Site Hours & PE Stamp ($)

2. Financial Breakdown & Yield

ANSI/SPRI FX-1 PULLOUT SIZING

Turnkey Testing Profit

Roof Engineering Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost