🏗️ CMAA Class D Top Running Double Girder (10-50 Ton), Max Wheel Load & Deflection

Overhead Bridge Crane & Runway Girder Calculator

Size industrial top-running and underhung overhead bridge cranes under CMAA Specification 70 & 74: calculate maximum individual end-truck wheel load (lbs with lifted load + trolley at extreme hook approach), runway girder vertical/lateral deflection (L/600 to L/1000 limits), and crane fabrication margins.

1. Project & Operating Inputs

Rated Crane Lifting Capacity (Tons e.g. 25 Ton Crane)

Bridge Clear Span (Feet e.g. 60 ft Span)

Customer Bid Price for Bridge Crane & Runway Package ($)

Steel Girders, End Trucks, Wire Rope Hoist, Busbar & Erectors ($)

2. Financial Breakdown & Yield

CMAA OVERHEAD BRIDGE CRANE

Turnkey Crane System Profit

Crane Fabricator Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost