W18x258 is a W-shape steel section reference for engineers, fabricators, detailers, and CAD users. This page brings together the section dimensions, sectional area, unit weight, and terminology shown in the associated AISC 16 reference data.
Use the values below as a reference when reviewing drawings, comparing W-shapes, or preparing preliminary detailing work. Final member selection, connection design, and structural verification must follow the applicable project requirements and be completed by a qualified engineer.
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 : 546.1 mm
Width : 299.7 mm
Web Thickness : 32.5 mm
Flange Thickness : 58.4 mm
Root Fillet Radius : 10.2 mm
Sectional Area : 490.32 cm2
Unit Weight : 384.9 kg/m
How to read the W18x258 reference
The listed depth and width describe the overall section envelope. Web thickness and flange thickness identify the principal plate thicknesses used to describe the W-shape. The root fillet radius describes the transition between the web and flange, which is relevant when checking clearances, connection detailing, and fabrication geometry.
Sectional area is a geometric property of the complete cross-section. It can support calculations involving material quantity and axial-resistance checks, but it should not be used alone to establish member capacity. Unit weight is useful for estimating shipping, handling, and structural steel takeoffs; project-specific assumptions and applicable design requirements still need to be verified.
Reference and CAD use
The source identifies the AISC Specification for Structural Steel Buildings, AISC 360-16, as the governing reference context. The linked DWG file can help with drafting and section-profile coordination. Review the drawing units, insertion settings, layer standards, and project conventions before using it in production documents.
For broader comparisons, connect this reference with related resources on W-shapes, steel section properties, structural steel connections, and CAD detailing practices.
W18x258 frequently asked questions
What type of section is W18x258?
It is identified in the source as a W Beam, commonly used as a reference designation for a wide-flange structural steel shape.
Which properties are listed for W18x258?
The source lists depth, width, web thickness, flange thickness, root fillet radius, sectional area, and unit weight.
What standard is referenced?
The page refers to the American Institute of Steel Construction Specification for Structural Steel Buildings, identified as AISC 360-16.
Can the DWG file be used directly for structural design?
The DWG is a drafting and profile-reference resource. It does not replace engineering checks, project specifications, connection design, or review by a qualified professional.
Why do the dimensions matter in detailing?
Section dimensions affect fit-up, clearances, connection geometry, fabrication coordination, and the way the member is represented in drawings. Confirm the source values and project units before using them.
