HP 16×121 (ASTM A572)

Source: AISC Shapes Database v16.0. Verified fields: A, G, It, Iw, Iy, Iz, Wply, Wplz, Wy, Wz, b, h, iy, iz, tf, tw. Other fields remain unverified unless identified as calculated. Native AISC x-x maps to stored major Iy; native y-y maps to stored minor Iz. Display uses native x-x/y-y.

h = 401 mm · b = 404 mm · tw = 19.1 mm · tf = 19.1 mm · G = 181 kg/m

ASTM A572 I/H section
Cross-Section Profile — HP 16×121 (to scale)

All dimensions in mm · I/H section · G = 181 kg/m · ASTM A572

181
kg / m
231
A (cm²)
66200
Ix (cm⁴)
3290
Sx (cm³)

Reference values — verify against the current edition of the applicable standard or manufacturer's table before design use.

Section Properties

Overall depth h 401 mm
Width b 404 mm
Web thickness tw 19.1 mm
Flange thickness tf 19.1 mm
Area A 231 cm²
Mass per length G 181 kg/m
Second moment (x-x) Ix 66200 cm⁴
Elastic modulus (x-x) Sx 3290 cm³
Plastic modulus (x-x) Zx 3700 cm³
Radius (x-x) rx 16.9 cm
Second moment (y-y) Iy 21000 cm⁴
Elastic modulus (y-y) Sy 1040 cm³
Plastic modulus (y-y) Zy 1600 cm³
Radius (y-y) ry 9.53 cm
Torsion constant It 348 cm⁴
Warping constant Iw 7650000 cm⁶

Using this section record

Read the axis labels before using inertia or modulus: the major and minor axes are not interchangeable. Dimensions are in millimetres; area is in cm², second moments in cm⁴, moduli in cm³ and radii in cm. Convert powers of length consistently when transferring values to a calculation.

A Source line covers only its listed verified fields. Other fields remain subject to verification. A dash is unavailable, never zero. Withheld values must not be inferred from the remaining dimensions. Nominal mass and dimensions are reference values rather than measured tolerances or procurement guarantees. Confirm the exact product, manufacturing route, grade and thickness with the manufacturer. Section properties alone do not establish member resistance: stability, effective length, connections and project design requirements need separate assessment.