W12x22 is a rolled structural beam with wide flanges that is used in construction and other applications.
Table of Contents
W12x22 Beam Size and Dimensions
The dimensions and specifications of this structural steel beam are below:
|Web Thickness||0.26 in|
|Flange Thickness||0.43 in|
|Area Moment of Inertia||154 in4|
|Elastic Section Modulus||25 in3|
The depth of W12x22 beams may vary by 1/8” above and below the nominal value.
The flange width may vary by 1/4” above nominal and 3/16” below nominal. Flanges may be out of square by as much as 5/16”.
The distance from the center of the web to the center of the profile may be no greater than 3/16”.
The radii of fillets and toes for W-beams are not specified. Instead, these dimensions are left up to individual manufacturers.
Wide flange beams are designated by their depth x weight. The W12x22 designation indicates that the beam weighs 22 pounds per foot. A 10-foot section of W12x22 would weigh 220 pounds and a 50-foot section of W12x22 would weigh 1,100 pounds.
W12x22 Conversion to Metric
The metric equivalent to W12x22 is W310x32.7. This metric beam has the following specifications:
|Web Thickness||6.6 mm|
|Flange Thickness||10.8 mm|
W12x22 Section Properties
W12x22 Area Moment of Inertia
The area moment of inertia (or second moment area) for a W12x22 beam about the x-axis (perpendicular to the flange) can be calculated from the equation below:
The area moment of inertia of the W12x22 profile about the x-axis is approximately 154 in4.
W12x22 Section Modulus
The elastic section modulus for a W12x22 beam about the X-axis is calculated from the following equation:
The elastic section modulus for the W12x22 profile about the X-axis is approximately 25 in3.
The properties of W12x22 beams are specified by ASTM A6 “Standard Specifications for Rolled Structural Steel Bars, Plates, Shapes and Sheet Piling”