We are checking the stresses in granite pavers, for when a forklift truck goes over them. We are having trouble finding the following information. We want to lift a 3300 pound load.

- assuming that we get a forklift with pneumatic tires, to what pressure are the tires inflated, generally?

- if we get a forklift with solid tires, how can we determine the contact area of the rubber with the pavement. We cannot contact the tire manufacturer because the contractor does not know which tires will be on the forklift that he rents for the particular project

- with pneumatic tires, is there any safety issue to reducing the tire inflation pressure about 25% so that we get a bigger tire contact area with the pavement (and therefore less flexural stress in the paver when analyzed with the Westergaard equations).

-is there any manufacturer that publishes either the centre of gravity of the unloaded unit (i.e. with no load being lifted) OR the front and rear axle loads of the unloaded unit