W12x305 is a W-shape reference entry for structural steel detailing and preliminary section identification. The source data below lists the section dimensions, sectional area, unit weight, and related terminology from the referenced AISC material.
Use this page alongside a broader W-shape dimensions reference when comparing sections, checking drawing callouts, or preparing a CAD model. The listed properties are reference data; final member selection and design checks require the applicable project criteria and qualified engineering review.
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 : 414 mm
Width : 335.3 mm
Web Thickness : 41.4 mm
Flange Thickness : 68.8 mm
Root Fillet Radius : 15 mm
Sectional Area : 577.42 cm2
Unit Weight : 453.3 kg/m
How to read the W12x305 reference
The dimension fields describe the overall geometry and main components of the section. Depth and width identify the section envelope, while web thickness and flange thickness describe the primary plate elements. The root fillet radius represents the curved transition between the web and flange, which is important when modeling connections or measuring clear distances.
Sectional area and unit weight
Sectional area is a geometric property commonly used when evaluating steel quantity and member mass. Unit weight expresses the listed mass per unit length and can support material estimating, shipping calculations, and detailing coordination. These values should be kept consistent with the governing section database when they are used in project calculations.
AISC reference and CAD workflow
The source identifies AISC 360-16 as the referenced specification for steel building design, fabrication, and erection in the United States. The downloadable DWG can support drafting workflows, but CAD geometry should be checked against the authoritative section data before it is used for fabrication or connection detailing. For related work, see internal references on steel section properties, W-shape terminology, and structural steel connections.
Frequently asked questions
What does W12x305 identify?
It identifies a W-shape structural steel section in the source reference. The dimensional and mass properties are listed in the technical content on this page.
What is the purpose of the root fillet radius?
The root fillet is the curved transition where the web meets a flange. Accounting for this feature helps produce more accurate CAD geometry and connection clearances.
What does unit weight mean for this section?
Unit weight is the listed mass per unit length of the steel section. It is useful for quantity takeoffs and material coordination, but it does not by itself establish structural capacity.
Can the DWG be used directly for fabrication?
The DWG is a drafting reference. Confirm its geometry, units, orientation, and project requirements against the governing section data before issuing fabrication or construction documents.
Is the listed section suitable for a particular structural application?
Suitability depends on loads, unbraced conditions, connection details, material requirements, and applicable design checks. A qualified engineer should verify the complete design.
