AISC v16.0 · W shape

W14X398

W14X398 weighs 398 lb/ft, has a depth of 18.3 in, a cross-sectional area of 117 in², and an x-axis elastic section modulus Sx of 656 in³. Open the full US customary property record or generate 2D, data, report, and 3D reference files locally in your browser.

W 398 lb/ft · 117 in² · EDI W14X398

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Nominal profile Units · inches

Building nominal profile…

Weight: 398 lb/ft
Area: 117 in²
Depth: 18.3 in
Elastic Sx: 656 in³

From designation to geometry

Reading the W14X398 record

The 14 in depth series in W14X398 is a designation. The tabulated depth d is 18.3 in and flange width bf is 16.6 in. The separately listed detailing depth ddet is 18.25 in.

The web thickness tw is 1.77 in and flange thickness tf is 2.85 in. Keep the exact designation with these dimensions: matching the depth series does not guarantee matching flanges, web geometry or connection fit.

Ix = 6,000 in⁴ and Iy = 2,170 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 W14X398

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 398 lb/ft weight
Quantity	Calculation	Nominal pounds	Kilogram equivalent
One 20 ft piece	20 ft × 398 lb/ft	7,960 lb	3,610.595 kg
3 pieces	3 × 7,960 lb	23,880 lb	10,831.786 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 W14X398 your way.

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

2D profile

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Properties & report

Tables and portable data

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Length-based 3D

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Member length in

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Dimensions & properties

W14X398 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: 398 lb/ft
A: 117 in²
d: 18.3 in
ddet: 18.25 in
bf: 16.6 in
bfdet: 16.625 in
tw: 1.77 in
twdet: 1.75 in
tf: 2.85 in
tfdet: 2.875 in
kdes: 3.44 in
kdet: 4.125 in
k1: 2.125 in

Centroid & detailing

T: 10 in
WGi: 7.5 in
WGo: 3 in

X-axis properties

Ix: 6,000 in⁴
Zx: 801 in³
Sx: 656 in³
rx: 7.16 in
rts: 5.05 in
ho: 15.5 in

Y- and z-axis properties

Iy: 2,170 in⁴
Zy: 402 in³
Sy: 262 in³
ry: 4.31 in

Torsion, warping & perimeters

J: 273 in⁴
Cw: 129,000 in⁶
PA: 81.8 in
PB: 98.4 in
PC: 53.2 in
PD: 69.8 in

Compare published reference values

W14X398 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)
W14X398 (this record)	398	18.3	117	6,000	2,170
W14X426	426	18.7	125	6,600	2,360
W14X370	370	17.9	109	5,440	1,990

Relative to W14X398, W14X426 changes nominal weight by +28 lb/ft, listed depth by +0.4 in, and area by +8 in². At the same hypothetical 20 ft length, the nominal weight difference is +560 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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