Live load differnces
Live load differnces
(OP)
What is the difference between H-20 traffic load and HS-20 traffic load? The size and weight of the truck?
Richard A. Cornelius, P.E.
WWW.amlinereast.com





RE: Live load differnces
H-20 adds another 32k axle, with a variable spacing of 14' to 30'.
If you're not designing a bridge, use a 16k wheel load, plus impact if necessary.
RE: Live load differnces
Richard A. Cornelius, P.E.
WWW.amlinereast.com
RE: Live load differnces
Richard A. Cornelius, P.E.
WWW.amlinereast.com
RE: Live load differnces
HL-93 is a bridge loading using the LRFD specs. It's an HS-20 truck + 640plf of uniform load spread over a 10' width. Whether you would apply the lane load in your situation is a matter of DOT policy. I designed some oddball drainage structures recently and we weren't required to use it. I would believe for a pipe under a road the lane load wouldn't be used.
RE: Live load differnces
Richard A. Cornelius, P.E.
WWW.amlinereast.com
RE: Live load differnces