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Hydraulic measurement and control
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Grade Resistance

IMPERIAL

The grade resistance of a vehicle is .01 times the gross weight times the percentage grade.

GR= .01 x GVW x % grade

Where:

GR = Grade resistance

GVW = Gross vehicle weight

Example:

What is the grade resistance of a vehicle having a gross weight of 10,000 lbs. on a 5% grade?

GR = .01 x 10,000 x 5 = 500 lbs

METRIC

The grade resistance of a vehicle is .0981 times the gross weight times the percentage grade.

GR= .0981 x GVW x % grade

Where:

GR = Grade resistance in newtons

GVW = Gross vehicle weight in kilograms

Example:

What is the grade resistance of a vehicle having a gross weight of 4,500 kg. on a 5% grade?

GR = .0981 x 4,500 x 5 = 2207.25 N