The W21x182 is a wide-flange structural steel shape listed with reference dimensions, section area, unit weight, and a root fillet radius. This page presents the source data for use in steel detailing, drafting, and preliminary section identification.
Use the dimensional information together with the applicable project requirements, material specification, connection details, and engineering calculations. The accompanying DWG resource can support CAD workflows, but it should be checked against the project standard before fabrication or construction use.
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 : 576.6 mm
Width : 317.5 mm
Web Thickness : 21.1 mm
Flange Thickness : 37.6 mm
Root Fillet Radius : 12.7 mm
Sectional Area : 345.81 cm2
Unit Weight : 271.5 kg/m
How to read the W21x182 reference
The listed depth and width describe the overall envelope of the W-shape. Web thickness identifies the thickness of the central web, while flange thickness describes the thickness of the horizontal flange elements. These dimensions are useful when checking clearances, framing layouts, drafting geometry, and compatibility with connection details.
Section area and unit weight
Sectional area is a cross-sectional property used in structural calculations and material takeoffs. Unit weight expresses the mass associated with a length of the member and is useful for estimating handling, shipping, and gravity-load effects. Keep the stated units in view when transferring values into design software or project spreadsheets.
Root fillet and detailing
The root fillet is the curved transition between the web and flange. It affects the internal geometry of the rolled shape and may be important when checking connection fit-up, bearing surfaces, cope details, and clearance around attachments. Do not assume that a nominal dimension represents every localized feature needed for fabrication detailing.
Reference standard and CAD use
The source identifies AISC 16, including the AISC 360-16 Specification for Structural Steel Buildings. Refer to the project’s governing design requirements and verified section-property data before using the shape in a structural design. The downloadable DWG is intended as a drafting reference; confirm scale, units, layer conventions, and geometry before incorporating it into production drawings.
Related resources may include the W-shapes reference, steel section properties, AISC terminology, and the structural steel CAD/DWG library.
W21x182 FAQ
What type of section is the W21x182?
It is a W-shape, also called a wide-flange structural steel section. The source content provides its dimensional and mass-related reference data.
What does the root fillet radius describe?
It describes the curved transition at the inside junction of the web and flange. This feature should be considered when developing connection, cope, and clearance details.
Can the DWG file be used directly for fabrication?
The DWG should be treated as a CAD reference. Verify its geometry, units, scale, and project-specific detailing requirements before using it for fabrication or construction documentation.
What is AISC 16 in this reference?
The page identifies AISC 16 as the AISC 360-16 specification reference for the design, fabrication, and erection of steel structures in the United States.
Are the listed properties sufficient for structural design?
No. The listed values are reference data and do not replace a complete engineering check. Design also depends on material requirements, loads, stability, connections, applicable project criteria, and professional verification.
