What is H-20/HS-20 Loading? AASHTO’s H-20 and HS-20 are live load ratings applied to the design of bridges or other suspended items (e.g. lids for concrete vaults). Because the pavers sit on a flat aggregate surface, they are not subject to the same bending moments and shear, and therefore will not collapse under the applied loads.

2024年4月15日 · There are four standard classes of highway vehicle loadings included in the Standard Specifications: H15, H20, HS15, and HS20. The AASHTO Geometric Guide states that the minimum design loading for new bridges should be HS20 (Fig. 11.l) for all functional classes (local roads through freeways) of highways.

An “H20” or an “HS20” series truck features an 8,000-pound axle load for the drive axle and a 32,000-pound axle load for the axle(s) under the trailer. The only difference in these two vehicles is that the “HS20” truck has an additional 32,000-pound axle located under the trailer, which is

Rainstore3 has been independently field and laboratory tested to meet H-20 Bridge Loading. Lab tests determine average Rainstore3 load capacity to be 93 psi at 2x safety factor.

H-10 through H-25 loads with deflection limited to the lesser of .125 inches (3.175 mm) or L/400 to a maximum simple span of 8’- 0” (2,438mm). Automobile and forklift loads are similarly evaluated with loads calculated and distributed in accordance with the criteria shown below. If the load conditions of your application are not

2010年7月28日 · The truck loads first used had the designation of H20 (see Figure 1), which covered a two-axle truck weighing 20 tons. The front axle carried 8,000 pounds and the rear axle, 14 feet away, carried 32,000 pounds. The 1944 edition included the HS20 truck load and started a policy of affixing the year to loadings making HS20-44 the official ...

2023年12月15日 · H-20 and HS-20 are AASHTO designations for load requirements on suspended surfaces such as bridges, concrete vaults, and manhole covers. H-20 is the standard load rating for a single-unit, two-axle truck that weighs up to

2017年6月13日 · AASHTO has established the following categories for weight limits for regular vehicular traffic: H20/HS20 = 16,000-lb wheel load, 32,000-lb axle. 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.

An “H20” or an “HS20” series truck will both have an 8,000-pound axle load for the drive axle and a 32,000 pound axle load for the axle(s) under the trailer. The only difference in these two vehicles is that the “HS20” truck has an additional 32,000-pound axle located under the trailer, which is separated by a minimum distance of 14 ...

2019年8月18日 · 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). Each axle will carry the loads as follow, the first axle carries 8,000 pounds, the second axle, 14 feet away carries 32,000 pounds and a single-axle semitrailer 14-30 ...