ASSHTO Bridge Wheel Load Distribution for Permit Vehicle
ASSHTO Bridge Wheel Load Distribution for Permit Vehicle
(OP)
For an HS truck, the wheel spacing is 6 feet and there are specific rules for the load distribution to the exterior and interior girders.
Maybe, I haven't looked hard enough in our ASSHTO specifications for the answer. I have a crane vehicle that needs to cross a short simple-span bridge. The crane has 6 axles and different wheel spacings for the front 3 axles and the rear 3 axles. Should I use the actual wheel spacing and calculate the load distribution in a direct proportional manner or should I use a 6-foot spacing with the appropriate ASSHTO rules.
Maybe, I haven't looked hard enough in our ASSHTO specifications for the answer. I have a crane vehicle that needs to cross a short simple-span bridge. The crane has 6 axles and different wheel spacings for the front 3 axles and the rear 3 axles. Should I use the actual wheel spacing and calculate the load distribution in a direct proportional manner or should I use a 6-foot spacing with the appropriate ASSHTO rules.






RE: ASSHTO Bridge Wheel Load Distribution for Permit Vehicle
RE: ASSHTO Bridge Wheel Load Distribution for Permit Vehicle
This bridge is privately owned by an industrial plant. I was using an older ASSHTO (16th Ed.1996) manual for this job. I was using the Load Factor Design method rather than ASD or LRFD. There is a more experienced fellow here that is helping me. The load factors are a little baffling to me.