What is an H-20 loading?
What is an H-20 loading?
H-20 loading, also known as HS-20 loading, is the design criteria of the American Association of State Highway Transportation Officials, or AASHTO. It “means” a truck axle loading of 32,000 pounds or wheel loading of 16,000 pounds.
What is the HL93 Highway loading and how is it different than HS-20?
The HL93 “design truck” wheel load is the same as the HS20 wheel load. The HL93 “design tandem” wheel load is 12,500 pounds compared with the “Alternate Military Load” of 12,000 pounds. The extra 500-pound wheel load is not a large increase and will only affect those designs that did not have excess capacity.
What is the difference between H-20 and HS-20 loading?
What’s the Difference Between H-20 and HS-20? The difference between an H-20 and HS-20 is an H series truck has two loaded axles, one for the drive axle and one for the trailer, and an HS series truck has more than two loaded axles, one for the drive axle and more than one for the trailer.
What is HL93 loading?
HL-93 is a type of theoretical vehicular loading proposed by AASHTO in 1993. It is used as the design loading for highway structures in USA and other countries where AASHTO code is followed. AASHTO HL-93 vehicular live load is a combination of three different loads, HL-93 Design Truck (formerly, HS20-44 Truck)
What is the rear wheel load for hs-20?
45,136 lbs
One of the differences between these ratings, is HS-20 refers to traffic loading conditions with wheel loads up to 45,136 lbs, when considering impact and load factors, while Tier 22 is using a 33,750 lbs wheel load tested in a vertical position.
What is HS20 44 loading?
Example of an HS truck loading: HS20-44 indicates a vehicle with a front tractor axle weighing 4 tons, a rear tractor axle weighing 16 tons, and a semi- trailer axle weighing 16 tons. The H and HS vehicles do not represent actual vehicles, but can be considered as “umbrella” loads.
What do you mean by HS20 44 loading?
What does H25 pound mean?
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. If a specification requires H20/HS20 loading it simply requires a cover meet the design load of 16,000 pounds per wheel without a safety factor.
What does HS mean on a tire?
H-Rated tires with shorter life spans become more common Speed ratings indicate the highest speed a tire maker considers safe for that tire to travel and is designated by letters such as Q, S, T, H, V, and Z along with the tire size information on the sidewall.
What is h15 loading?
Most bridges in the United States were designed to accommodate either an H-15 or HS-20 loading. An H-15 loading is represented by a two-axle single unit truck weighing 30,000 pounds (15 tons) with 6,000 pounds on its steering axle and 24,000 pounds on its drive axle.
Can you use a tire with a higher load index?
If you’re thinking about up-sizing, you can switch to a tire with a higher load index, because that means your tire can safely carry more weight, but you can never go down.
How many pounds does a HS20 truck load carry?
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 designation.
What does the HS-20 traffic rating mean?
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. It also takes into consideration the additional loading that occurs from moving vehicles.
What do you mean by H-20 loading?
Home › World View › What Is H-20 Loading? What Is H-20 Loading? H-20 loading, also known as HS-20 loading, is the bridge design criteria established by the American Association of State Highway Transportation Officials, states the National Precast Concrete Association 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).
