“HS-20 loading” means the force imposed by a pair of 16,000 pound concentrated loads, one located over the point in question and the other located 72 inches distant, so as to simulate the tire loads of a truck.

Source. (See Revision Note at chapter heading for Env-Wq 700) #8590, eff 3-25-06; ss by #10693, eff 10-15-14; ss by #14258, eff 7-1-25, EXPIRES: 7-1-35