What is H-20 traffic loading?

What does HS-20 traffic rating mean? This is the term used by AASHTO and ACI to describe normal MOVING traffic loading conditions up to 18-wheeler loading. This loading assumes a 16,000 lbs wheel load and therefore a 32,000 lbs axle load.

What is load capacity H25?

H25/HS25 = 20,000-lb wheel load, 40,000-lb axle. Covers designed to meet the basic requirements for these loads need only be tested with a proof load to meet these minimums.

What do you mean by dead load?

: a constant load in a structure (such as a bridge, building, or machine) that is due to the weight of the members, the supported structure, and permanent attachments or accessories.

How deep should you bury a culvert?

Cover the culvert with soil to a depth of at least 12 inches, or at least 1/2 of the diameter for larger culverts (Figure 6). For example, a 36-inch culvert should have a soil cover at least 18 inches in depth.

When did the HS20 truck load become official?

The 1944 edition included the HS20 truck load and started a policy of affixing the year to loadings making HS20-44 the official designation. The additional ‘S’ made an allowance for heavier tractor-trailers that were available at the time. Figure 2 describes the load and load spacing for HS20-44.

What does the HS-20 traffic rating mean?

What is the proof load on a H-20?

The 40,000-pound proof load signifies a 2.5 safety factor over the H-20 design load of 16,000 pounds. Medium duty castings can carry loading ranging from 16,000 to 40,000 pounds, and it can receive traditional loading, according to the NPCA foundation.

What does HS-20 stand for in AASHTO?

HS-20 is the truck live loadings of the AASHTO specification, where H stands for highway, S stands for semi-trailer, 20 stands for 20-ton weight of the tractor (first two axles).