FRICTION COEFFICIENT & DECELERATION PHYSICS

Dunnage & Friction Mat WLL Calculator

Model forward (0.8g), lateral (0.5g), and rearward (0.5g) cargo sliding resistance. Calculate how high-density rubber friction mats reduce required tie-down counts while preventing metal-on-metal slide.

Cargo Mass & Deck Interface

49 CFR 393.102

Total Heavy Cargo Mass (lbs)

Deck Surface Material

Cargo Contact Interface

Front Bulkhead Headerboard

Chain Working Load Limit (WLL)

Frictional Sliding Resistance

HIGH RETENTION

Effective Friction

μ = 0.60

Surface grip factor

Passive Braking Hold

28,800 lbs

Gravity resistance

Min Chains Required

4 Chains

Aggregate WLL ≥ 50%

Forward Deceleration Demand (0.8g): 38,400 lbs

Lateral Turning Demand (0.5g): 24,000 lbs

Net Braking Deficit to Chains: 9,600 lbs

Driver Securement Camera Verification Exspeedite Safety App

Drivers submit geotagged photos of chain binders, dunnage layout, and friction mat edges to safety dispatch prior to departure, preventing DOT out-of-service orders.

Request Safety Dispatch Demo