🏬 ASTM E1300 Wind Load (25-50 PSF), Mullion Moment of Inertia Ixx & L/175

Commercial Storefront Wind Load & Mullion Calculator

Size commercial aluminum storefront framing under ASTM E1300 & IBC: calculate design wind load pressures (PSF based on basic wind speed and building exposure), required vertical intermediate mullion moment of inertia (Ixx in⁴ based on L/175 or 3/4" deflection limits), steel stiffener reinforcements, and commercial glazing bidding.

1. Project & Operating Inputs

Storefront Glass Elevation (Square Feet e.g. 3,500 Sq Ft)

Clear Span Mullion Height (Feet e.g. 12 ft Height)

Customer Bid Price for Installed Storefront ($ / Sq Ft e.g. $65/SqFt)

Tubular Aluminum Frames, Low-E IGUs, Steel Reinforcing & Glaziers ($ / Sq Ft)

2. Financial Breakdown & Yield

ASTM E1300 STOREFRONT MULLIONS

Turnkey Storefront Package Profit

Commercial Glazier Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost