W40x149 is a W beam reference entry for engineers, detailers, fabricators, and students working with structural steel shape data. Use the source-listed dimensions and section information below when identifying the shape in drawings, preliminary detailing, or steel-shape research.
This page also identifies the AISC reference associated with the data and provides access to a DWG download for CAD and drafting workflows. Confirm project requirements, material specifications, connection details, and design assumptions against the governing project documents before using the shape in engineering work.
W Beam
refer to : AISC 16
the American Institute of Steel Construction (AISC) Specification for Structural Steel Buildings (AISC 360-16), which is the 2016 edition of the AISC Specification for Structural Steel Buildings. It provides guidelines and requirements for the design, fabrication, and erection of steel structures in the United States.
Depth : 970.3 mm
Width : 299.7 mm
Web Thickness : 16 mm
Flange Thickness : 21.1 mm
Root Fillet Radius : 30 mm
Sectional Area : 282.58 cm2
Unit Weight : 221.8 kg/m
How to read the W40x149 reference
The listed depth and width describe the overall envelope of the W beam. Web thickness and flange thickness describe the principal plate elements that form the section. The root fillet radius identifies the curved transition between the web and flange, which is relevant when reviewing clearances, detailing, and geometric assumptions.
The source also reports sectional area and unit weight. These are distinct pieces of information: sectional area describes the steel area in the cross-section, while unit weight describes the listed mass per unit length. Keep the units shown in the source when transferring values into calculations, schedules, estimating documents, or CAD notes.
Reference and CAD use
The page cites AISC 360-16, the 2016 edition of the AISC Specification for Structural Steel Buildings, as the referenced specification. This citation provides design, fabrication, and erection context; it does not replace project-specific engineering review or the complete governing requirements.
The downloadable DWG can support drawing coordination and shape identification. Review the file and confirm its units, insertion scale, layer conventions, and geometric alignment before incorporating it into production documents. Related references that may be useful from this page include W-shape terminology, structural steel section properties, steel connection detailing, and CAD/DWG drafting guidance.
Frequently asked questions
What type of section is W40x149?
W40x149 is identified in the source as a W beam. The page lists its overall dimensions, web and flange thicknesses, root fillet radius, sectional area, and unit weight.
Which standard is referenced for this shape?
The source refers to AISC 360-16, the 2016 edition of the AISC Specification for Structural Steel Buildings. Use the complete governing project requirements when applying the reference.
Is a DWG file available for W40x149?
Yes. The page includes a downloadable W40x149 DWG file for CAD and drafting reference. Check the file’s units and scale before using it in a drawing.
Can the listed values be used directly for design?
The listed values are reference data from the source content. Design use requires verification of the applicable material, loading, stability, connection, fabrication, and project requirements by the responsible engineer.
