The W21x122 is a W-shape steel beam reference entry with dimensional and mass information presented in both metric units and an AISC design context. Use the source values below when checking drawings, comparing section references, or coordinating structural steel details.
This page is intended as a practical reference for engineers, detailers, fabricators, and CAD users. For design work, verify the applicable material specification, loading, connection conditions, stability requirements, and project criteria rather than relying on the shape designation alone.
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 : 551.2 mm
Width : 315 mm
Web Thickness : 15.2 mm
Flange Thickness : 24.4 mm
Root Fillet Radius : 12.7 mm
Sectional Area : 231.61 cm2
Unit Weight : 181.8 kg/m
How to read the W21x122 reference
The source identifies this member as a W beam. Its listed dimensions describe overall depth, flange width, web thickness, flange thickness, and root fillet radius. These properties help users recognize the section in elevation, coordinate clearances, and distinguish it from other W-shape references.
The listed sectional area is useful for section-property and material-reference workflows, while the unit weight supports estimating and detailing tasks. Keep the units attached to each value: the dimensional entries are reported in millimeters, the area in square centimeters, and the unit weight in kilograms per meter.
AISC 360-16 context
The entry refers to the American Institute of Steel Construction Specification for Structural Steel Buildings (AISC 360-16), identified in the source as the 2016 edition. That specification provides the design, fabrication, and erection framework referenced here. It does not replace project-specific engineering checks or the requirements of the governing construction documents.
CAD and detailing workflow
A DWG download is provided for the W21x122 reference. Before placing downloaded geometry into production drawings, check units, layer conventions, insertion orientation, section identification, and compatibility with the project template. Related resources on W-shapes, section properties, steel connections, and structural steel detailing can help place this profile in a broader design workflow.
W21x122 FAQ
What type of section is W21x122?
The source identifies W21x122 as a W beam, commonly referenced as a wide-flange structural steel shape.
Which design specification is referenced?
The entry references AISC 360-16, the American Institute of Steel Construction Specification for Structural Steel Buildings, identified here as the 2016 edition.
What information is listed for this section?
The source lists depth, width, web thickness, flange thickness, root fillet radius, sectional area, and unit weight. The original values remain the controlling reference for this page.
Is a CAD file available?
Yes. The page includes a DWG download reference for W21x122. Confirm the file units and drafting conventions before using it in project documentation.
Can the listed properties be used as a complete design check?
No. The listed geometry and mass information are reference data. Structural design also requires verification of loads, strength, stability, serviceability, materials, connections, and applicable project requirements.
