What is H 20 vehicle 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 H 25 loading?
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.
How much weight will my bridge hold?
In addition to Bridge Formula weight limits, Federal law states that single axles are limited to 20,000 pounds, and axles spaced more than 40 inches and not more than 96 inches apart (tandem axles) are limited to 34,000 pounds. Gross vehicle weight is limited to 80,000 pounds (23 U.S.C. 127).
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.
What is the hsah-20 load on a bridge?
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. It specifies truck axle loading of 32,000 pounds or wheel loading of 16,000 pounds.
What are the AASHTO specifications for h15-44 loads?
The AASHTO specifications also allow you to represent the truck as a single concentrated load and an uniform load. For H15-44 and HS15-44: Concentrated load 13.5 kips for moment 19.5 kips for shear
What does HS-20 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 is the AASHTO axle load?
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.