Incredible Aashto Design Tandem References

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Aashto Design Tandem. Aashto design procedure is a result of empirical equations which were developed as a result of If the entire design tandem is to be included in the deck design it presumed to be distributed over a larger equivalent strip.

H and HS design trucks are used for the basis of loading for AASHTO
H and HS design trucks are used for the basis of loading for AASHTO from www.researchgate.net

The design tandem loading is defined as a pair of 25.0 kip axles spaced 4 ft apart. Investigation of negative moment and reactions at interior supports for pairs of the design tandem spaced from 26ft ~ 40 ft apart combined with design lane load.where can this information be found in aashto spec. The aashto specifications 3.6.1.3.2 and 2.5.2.6.2 are used to adopt the deflection limit of l/800 (where l is the span of the bridge).

H and HS design trucks are used for the basis of loading for AASHTO

The term “lane load” is new and applies to design of above grade bridge decks. The “design tandem” is the same as shown in figure 3 except that the axle load is 25,000 pounds rather than 24,000 pounds. 5 percent of the axle weights of the design tandem plus lane load. These loads are applied with the lane loading.