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r not the truck is loaded. GradeabilityThe “Gradeability” indicates the ability of the forklift to ascend a slope. This ability differs depending on whether it is loaded or not. The unit of measuring the Gradeability varies from manufacturer to manufacturer. The conversion table given below may be utilized for parison purposes. The Gradeability of Tailift forklift trucks is normally expressed in tangent percent (tan 0%).Gradeability Conversion TableDegreeFractiontan 0%sin 0%DegreeFractiontan 0%sin 0%(0)(B/A)(B/A)(B/C)(0)(B/A)(B/A)(B/C)11/241/21/251/31/261/41/271/51/281/61/291/71/301/81/311/91/321/101/331/111/341/121/351/131/361/141/371/151/381/161/391/171/401/181/411/191/421/201/431/211/441/221/451/231/WeightTruck weight: Total weight of a forklift truck without load. Gross truck weight: The truck weight plus the maximum load. In a forklift truck the gross truck weight also includes the weight of an operator.Weight distribution: The weight of a truck in both an unloaded and loaded state is distributed to the front wheels and rear wheels.WorldLift Sales Manual 2005 10