AASHTO MP 26-15 (2020) PDF Download

AASHTO MP 26-15 is a standard specification that outlines the requirements for cotton duck fabric bridge bearings. The standard states that these bearings must be able to accommodate thermal expansion and contraction, rotation, camber changes, and creep and shrinkage in structural members, as applicable. The specification covers both fixed bearings and sliding bearings made from cotton duck fabric. The term "cotton duck fabric bearings" encompasses various types of bearings including fabric bearings, preformed fabric bearings, cotton duck pads, and cotton duck bearings.

Overall, this standard ensures that cotton duck fabric bridge bearings are designed and manufactured to meet specific criteria, ensuring their proper functioning and longevity when used in bridge construction and maintenance. It provides guidance for the material properties and performance requirements for these bearings, ensuring their ability to withstand the dynamic forces and movements experienced by bridges.