CALCULATING CENTER OF GRAVITY (Continued).
Use the data and formulas provided below to determine if the trailer is loaded properly and within its
limits. Known information for the trailer is provided. Information for the payload will need to be
calculated through measurements and from data contained on the payload, vehicle, or equipment.
CG = Center of Gravity
CL = Center Line
WB = 448.06 in. (37 ft 4 1/16 in.)
EWF = Trailer Empty Weight at Front
EWF = 7,840 lb (3,556.2 kg)
EWR = Trailer Empty Weight at Rear
EWR = 15,320 lb (6,940.0 kg)
WB = Wheelbase
(X) x Payload Weight + EWR = Axle Load
(Y) x Payload Weight + EWF = Kingpin Load
Calculating Trailer Center of Gravity with Payload