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HP 305x149

Production class: hot rolled (ASTM A 6/A 6M)

Section geometry

HP shape
Height (h):
318.5mm
Width (b):
316mm
Web thickness (tw):
20.6mm
Flange thickness (tf):
20.7mm
Radius (r):
20mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
3.332E8
Z-axis:
1.091E8
Elastic section modulus (Wel):mm³
Y-axis:
2.092E6
Z-axis:
6.907E5
Plastic section modulus (Wpl):mm³
Y-axis:
2.389E6
Z-axis:
1.067E6
Radius of gyration (i):mm
Y-axis:
131
Z-axis:
75
Plastic shear area (Av):mm²
Y-axis:
13080
Z-axis:
7306
Weight per meter:
149kg/m
Area (A):
18990mm²
Surface area per meter:
1.825m²/m
Torsion constant (It):
3.103E6mm⁴
Warping constant (Iw):
2.413E12mm⁶

Profile overview for HP 305x149

The HP 305x149 is a structural steel cross-section utilized in commercial construction, industrial framing, and mechanical engineering. Manufactured as a hot rolled section, it complies with ASTM A 6/A 6M dimensional standards, ensuring predictability in detailing and fabrication.Access to its exact geometric and statical properties is essential for 3D modeling and structural verification.

Geometry: This open profile features a total depth (h) of 318.5 mm and a flange width (b) of 316 mm, supported by a 20.6 mm thick web and 20.7 mm thick flanges. With a cross-sectional area of 18990 mm² and a linear mass of 149 kg/m, the HP 305x149 offers a distinct stiffness-to-weight ratio for both column (axial) and beam applications.

Section properties: For design of bending, the major and minor axis properties dictate the member's structural capacity. The strong-axis moment of inertia (Iy) of 333200000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 2389000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 109100000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the HP 305x149 provides a y-axis shear area (at strong bending axis) of 13082.4 mm² for web shear verification and a torsion constant of 3103000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 2413000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.