On drawings, abbr. for alarm

Gravel, sand, silt, soil, or other material that is deposited by running water.

Steel containing one or more alloying elements other than carbon, such as chromium, molybdenum, or nickel, which have been added

A composition of two or more metals fused together, usually to obtain a desired property.

In the design of structures, the maximum unit stress permitted under working loads by codes and specifications.