🪝 ASME B30.9 Slings (Vertical, Choker & Basket Hitch Angle Derates 60°/45°/30°)

Rigging Sling Hitch & Angular Derate Calculator

Calculate Working Load Limit (WLL) and angular tension multipliers for wire rope, synthetic webbing, round slings, and Grade 100 alloy chain bridles under ASME B30.9 & OSHA 1926.251: calculate sling tension (Tension Lbs = [Load / N] x [1 / sin(θ)]), choke angle reduction factors, D/d ratio bending efficiency, and rigging equipment profits.

1. Project & Operating Inputs

Gross Pick Weight (Lbs e.g. 48,000 Lbs Equipment Load)

Horizontal Sling Angle (Degrees e.g. 45° Bridle Angle = 1.414 Multiplier)

Customer Bid Price for Supplied & Certified Rigging Tackle ($)

Grade 100 Chain Bridle, Spreader Bar, Shackles, Magnetic Taglines ($)

2. Financial Breakdown & Yield

ASME B30.9 RIGGING SLING SIZING

Turnkey Rigging Package Profit

Rigging Supply & Inspection Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost