The W33x318 is a W-shaped structural steel section identified by its nominal depth and unit-weight designation. This reference entry organizes the supplied profile data so engineers, detailers, fabricators, and students can quickly review the section geometry and mass-related information.
Use the source values below as the authoritative local reference for this shape. For broader context, connect this page to related resources on W shapes, steel section properties, AISC terminology, and structural steel detailing.
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 : 894.1 mm
Width : 406.4 mm
Web Thickness : 26.4 mm
Flange Thickness : 48 mm
Root Fillet Radius : 20.1 mm
Sectional Area : 604.51 cm2
Unit Weight : 474.5 kg/m
How to read the W33x318 reference
The listed depth and width describe the overall envelope of the W section. Web thickness and flange thickness describe the main plate elements that form the section, while the root fillet radius identifies the curved transition between the web and each flange. These dimensions are useful when checking clearances, detailing framing connections, and coordinating the shape with adjacent components.
Section area and unit weight
Sectional area describes the amount of steel in the cross-section. It is commonly used with material density and member length when estimating mass. The listed unit weight expresses the profile’s mass per unit length; it should not be treated as a complete structural resistance or design capacity.
Design and detailing context
The source identifies the AISC 360-16 context for structural steel design, fabrication, and erection in the United States. Applying this shape in a project still requires the relevant design checks, material specification, connection design, stability evaluation, and detailing review by a qualified engineer. The profile data here should therefore be used as a reference input rather than as a design approval.
CAD reference
A DWG download is provided with this entry for drafting and coordination workflows. Before using the file in production documentation, verify units, scale, layer conventions, and the project team’s CAD standards. Pair this resource with internal guides on DWG file use, steel connection detailing, and W-shape identification.
Frequently asked questions
What type of section is W33x318?
W33x318 is a W-shaped structural steel beam designation. The source content identifies it as a W beam and provides its profile dimensions, section area, and unit weight.
What do the numbers in W33x318 indicate?
The designation identifies the W-shape series and its nominal depth and unit-weight classification. The detailed dimensions and properties should be taken from the supplied reference values rather than inferred from the designation alone.
What is the root fillet on a W beam?
The root fillet is the rounded transition where the web meets a flange. It affects the true profile boundary and can matter when checking connection clearances, copes, and fit-up.
Can the W33x318 data be used directly for structural design?
The data can serve as a reference input, but it does not replace member design, connection design, stability checks, material verification, or project-specific engineering review.
Is a CAD file available for W33x318?
Yes. The source entry includes a DWG download reference for the W33x318 profile. Confirm file units and drafting conventions before incorporating it into project drawings.
