W12x50

W12x50 is a standard designation for a wide-flange structural steel beam in the W-shape family. In the common AISC naming system, the number 12 refers to the beam’s approximate depth in inches, while the 50 indicates roughly 50 pounds per foot of weight. The W12x50 serves as a general-purpose beam for moderate-to-long spans in steel-frame structures.

Physical characteristics are typical of a rolled I-beam: an overall depth near 12 inches, flange widths around 6.8 to 7.0 inches, web thickness about 0.28 to 0.34 inches, and flange thickness around 0.5 to 0.6 inches. The cross-section is optimized for bending about the strong axis, providing a balance of strength and weight for mid-range applications. Exact dimensions vary slightly by manufacturer and edition of the shape catalog.

Standards and manufacturing: W-shapes are hot-rolled sections produced to standards such as ASTM A6/A6M and specified in accordance with AISC specifications. They are commonly available in standard stock lengths, typically up to 40 feet, with additional processing (cutting, drilling, end preparation) offered by fabricators. Tolerances and nominal properties (such as section modulus and moments of inertia) vary among producers and exact grade or specification.

Applications and design considerations: W12x50 beams are used as primary beams in building frames, floor and roof girders, and other supporting members where a moderate-to-high load-carrying capacity is required without excessive weight. Designers account for bending and shear, deflection limits, and connection details (to columns and other members), ensuring compatibility with fabricated connections and available stock sizes. Availability is broad in many regions, though exact dimensions and weights can differ slightly between manufacturers and catalogs.