AISC v16.0 · W shape

W8X28

W8X28 weighs 28 lb/ft, has a depth of 8.06 in, a cross-sectional area of 8.25 in², and an x-axis elastic section modulus Sx of 24.3 in³. Open the full US customary property record or generate 2D, data, report, and 3D reference files locally in your browser.

W 28 lb/ft · 8.25 in² · EDI W8X28

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Nominal profile Units · inches

Building nominal profile…

Weight: 28 lb/ft
Area: 8.25 in²
Depth: 8.06 in
Elastic Sx: 24.3 in³

From designation to geometry

Reading the W8X28 record

The 8 in depth series in W8X28 is a designation. The tabulated depth d is 8.06 in and flange width bf is 6.54 in. The separately listed detailing depth ddet is 8 in.

The web thickness tw is 0.285 in and flange thickness tf is 0.465 in. Keep the exact designation with these dimensions: matching the depth series does not guarantee matching flanges, web geometry or connection fit.

Ix = 98 in⁴ and Iy = 21.7 in⁴ refer to the database x- and y-axes. Here Ix is numerically larger. Axis letters are labels, not a guarantee that x is always the larger axis. These are geometric properties, not allowable loads or complete member capacities.

Match the axis and dimension conventions to the figures in the AISC v16.0 workbook Readme. The profile above simplifies manufacturing geometry; its outline is not used to recalculate the published properties.

Worked quantity example

Nominal weight for W8X28

Assume 3 pieces, each 20 ft (6.096 m) long. This is a hypothetical quantity example, not a stock-length or lifting recommendation.

Using the published 28 lb/ft weight
Quantity	Calculation	Nominal pounds	Kilogram equivalent
One 20 ft piece	20 ft × 28 lb/ft	560 lb	254.012 kg
3 pieces	3 × 560 lb	1,680 lb	762.035 kg

Conversion: 1 lb = 0.45359237 kg; displayed results are rounded. This multiplication excludes connection plates, bolts, weld metal, coatings, cutting allowances and actual material variation. Use the material takeoff for your own lengths and quantities.

Shape family context

What is a wide-flange shape?

A W-shape is a hot-rolled, doubly symmetric wide-flange section commonly used for beams and columns. Its relatively wide flanges and web distribute material efficiently for many bending and axial-force applications.

Learn how shape properties work

Common context

Common project roles include floor beams, roof beams, girders, columns, transfer members, and parts of braced or moment frames.

Detailing watch

Confirm orientation, camber, flange and web connection access, unbraced length assumptions, copes, stiffeners, and the exact grade and availability required by the project.

Portable reference files

Download W8X28 your way.

Every file is generated locally in your browser from the same nominal profile and AISC v16.0 reference record.

2D profile

CAD, vector, and image

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Properties & report

Tables and portable data

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Length-based 3D

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Enter a member length in inches. Mesh files are generated from the nominal reference profile.

Member length in

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Dimensions & properties

W8X28 reference data.

Values below are derived from the AISC Shapes Database v16.0 in US customary units. A dash indicates that a property is not applicable or not included for this family.

Nominal dimensions

W: 28 lb/ft
A: 8.25 in²
d: 8.06 in
ddet: 8 in
bf: 6.54 in
bfdet: 6.5 in
tw: 0.285 in
twdet: 0.313 in
tf: 0.465 in
tfdet: 0.438 in
kdes: 0.859 in
kdet: 0.938 in
k1: 0.625 in

Centroid & detailing

T: 6.125 in
WGi: 4 in

X-axis properties

Ix: 98 in⁴
Zx: 27.2 in³
Sx: 24.3 in³
rx: 3.45 in
rts: 1.84 in
ho: 7.6 in

Y- and z-axis properties

Iy: 21.7 in⁴
Zy: 10.1 in³
Sy: 6.63 in³
ry: 1.62 in

Torsion, warping & perimeters

J: 0.537 in⁴
Cw: 312 in⁶
PA: 34.5 in
PB: 41 in
PC: 22.7 in
PD: 29.2 in

Compare published reference values

W8X28 alongside nearby W records

These records share the same nominal series, outside envelope or leg arrangement, depending on the family. Peers are ordered by absolute weight difference, then listed depth and designation. The table does not rank structural performance or approve a substitution.

US customary values from the same AISC v16.0 dataset
Record	Weight (lb/ft)	Depth (in)	Area (in²)	Ix (in⁴)	Iy (in⁴)
W8X28 (this record)	28	8.06	8.25	98	21.7
W8X31	31	8	9.13	110	37.1
W8X24	24	7.93	7.08	82.7	18.3

Relative to W8X28, W8X31 changes nominal weight by +3 lb/ft, listed depth by -0.06 in, and area by +0.88 in². At the same hypothetical 20 ft length, the nominal weight difference is +60 lb.

Open these records in the full comparison tool

Compare the remaining dimensions, axis conventions, grade, availability and project requirements separately. Weight or section-property similarity does not establish matching connection geometry or member capacity.

Reference use only.

Data is derived from the AISC Shapes Database v16.0, consistent with the AISC Steel Construction Manual, 16th Edition, 1st Printing. AISC advises professional verification before use in a specific application. The downloadable DXF is a nominal reference profile and may simplify rolled fillets, flange tapers, angle radii, HSS corner radii, and other manufacturing geometry. Verify all dimensions and suitability before design, detailing, ordering, or fabrication.

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