Tapersplit shakes have a natural taper that is similar to the taper of a shingle. Straight-. split shakes are of the same thickness throughout the length of the shake. No. 1 Handsplit and tapersawn shakes of clear heartwood with no more than 20% flat-grained pieces in.
The axle load of a wheeled vehicle is the total weight felt by the roadway for all wheels connected to a given axle.Viewed another way, it is the fraction of total vehicle weight resting on a given axle.xle load is an important design consideration in the engineering of roadways and railways, as both are designed to tolerate a maximum weight-per-axle (axle load); exceeding the maximum rated axle load will cause damage to the roadway or rail tracks.
Federal weight limits of vehicles and axle loading limits are governed by the Federal Bridge Law (FBL), which has four primary rules: 1  The maximum weight allowed on a single axle is 20,000 lbs. 2  The maximum total weight allowed on any two consecutive axles spaced eight or fewer feet apart (like tandem axles) is 34,000 lbs.