Los Angeles City Structural Welding Code – Steel (D1.1) Certification Practice Test

The call out (W 12X60) denotes specific dimensions and weight characteristics of a structural steel beam. In this case, "W" indicates that it is a wide flange shape commonly used in construction, which is characterized by its broad flanges and deep web. The "12" specifies the height of the beam in inches, meaning that the beam is 12 inches tall. The "60" reflects the weight per linear foot of the beam, indicating that it weighs 60 pounds for every foot of its length.

Understanding the designation is crucial in structural engineering and welding contexts, as it allows for the identification of the beam’s physical characteristics important for load calculations and construction methods. This simplifies the selection of proper materials and ensures that structural integrity is maintained in the design.