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Vocation?
Bodies are typically and open box with any auger or mixer. Low speed operation in a very dirty environment. Drivers know more about the process than the truck.
Full Truck or Tractor?
Vehicle is built with a fifth wheel and has equipment installed by upfitter.
Sleeping Compartment ?
No Sleeper
Constraints Messages- click on constraint to address issue
Body Front to Bogie/Trunnion?
1. Typical front axle rating must exceed 13,000 lbs. with a sleeper larger than 75 inches.
2. Federal Bridge allows rounding up to next foot with half feet increments.
3. Reduce Desired Total GCW/GVW to eliminate lift axle requirement
Desired Total GCW/GVW?
Desired Steer GAWR?
Adding a lift allows you to increase
GCW/GVW or shorten the wheelbase
Desired Total Drive GAWR?
Steer Axle?
Rear Axle Style?
Weight > GAWR or Fed Bridge
Lift Axle/s ?
Bridge Law/Permit ?
Cutoff/After Frame (Min) ?
Overall Bridge
Axle Count
Minimum Wheelbase
Rear Axle Spacing ?
FAX to Back of Cab?
Cab to Body Gap ?
Body Length ?
WheelBase ?
Imperial
Weights
Lift Axle Required
Inches
Inches
Metrics
Weights
Millimeters
Millimeters
<- ENTER VALUE IN POUNDS
<- ENTER VALUE IN POUNDS
<- ENTER VALUE IN POUNDS
One rolling steer axle that will be outfitted with a hydraulic driven power unit on each outer end. Typical ground load 8,000 -22,000 lbs.
Rear suspension supports two axles. No interaxle driveline exists, the rearmost axle is not powered, it rolls freely in contact with ground at all times. Typical ground load does not exceed 34,000 lbs.
Calculated weight in excess of 80K may require lift axles
No Lift Axle is being considered
Adding a lift axle allows you to increase GCW/GVW or shorten the wheelbase
Federal – Round up @ .5 feet
Inches measured from centerline of front axle to center of the rear axle group defined under Rear Axle Style.
Spacing should be close as possible for best tire wear, at least 54 inches for most lift axle applications.
Enter inches. Varies by model and axle setting. Used to arrive at wheelbase requirement and load space.
If vehicle is a semi-tractor then this field should be zero. Enter inches for trucks with a body.
If vehicle is a semi-tractor then this field should be zero. Enter inches for trucks with a body.
Takes into account the gap value. Use a zero for Cab to Body Gap if you want to calculate cab to axle.
Tractor values are static. Typically used for bodied trucks.
Review Bridge Law to verify the Overall Bridge for calculated Axle Count and compare to Desired GCW/GVW.
Calculated value.
Does not take into account lift axles, vertical exhaust behind cab/sleeper, or trailer swing/dip clearances.
Application
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