W8x24 Beam Specifications

W8x24 is a rolled structural beam with wide flanges that is used in construction and other applications.

W8x24 Beam Size and Dimensions

The dimensions and specifications of this structural steel beam are below:

Depth7.93 in
Width6.5 in
Area7.1 in2
Weight24 lb/ft
Web Thickness0.25 in
Flange Thickness0.4 in
Area Moment of Inertia81.1 in4
Elastic Section Modulus20 in3

W8x24 Profile

The depth of W8x24 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.

W8x24 Weight

Wide flange beams are designated by their depth x weight. The W8x24 designation indicates that the beam weighs 24 pounds per foot. A 10-foot section of W8x24 would weigh 240 pounds and a 50-foot section of W8x24 would weigh 1,200 pounds.

W8x24 Conversion to Metric

The metric equivalent to W8x24 is W200x35.9. This metric beam has the following specifications:

Depth201 mm
Width165 mm
Area45.7 mm2
Weight35.9 kg/m
Web Thickness6.2 mm
Flange Thickness10.2 mm

W8x24 Section Properties

W8x24 Area Moment of Inertia

The area moment of inertia (or second moment area) for a W8x24 beam about the x-axis (perpendicular to the flange) can be calculated from the equation below:

W8x24 area moment of inertia

The area moment of inertia of the W8x24 profile about the x-axis is approximately 81.1 in4.

W8x24 Section Modulus

The elastic section modulus for a W8x24 beam about the X-axis is calculated from the following equation:

W8x24 Section Modulus

The elastic section modulus for the W8x24 profile about the X-axis is approximately 20 in3.

W8x24 Properties

The properties of W8x24 beams are specified by ASTM A6 “Standard Specifications for Rolled Structural Steel Bars, Plates, Shapes and Sheet Piling

Scroll to Top
Complete... 50%
Please enter your name and email address below to receive a link to the toolkit.

You’ll also receive regular tips to help you master Excel for engineering.



By Charlie Young, P.E.

Take your engineering to the next level with advanced Excel skills.