steelsnakes

A python library for structural steel. Currently supports 🇬🇧 UK, 🇪🇺 EU, 🇺🇸 US Developing 🇮🇳 IN. Considering 🇦🇺 AU / 🇳🇿 NZ, 🇯🇵 JP, 🇲🇽 MX, 🇿🇦 SA, 🇨🇳 CN, 🇨🇦 CA, 🇰🇷 KR.

Quick Start

Installation

pip install steelsnakes

Basic Usage

from steelsnakes.UK import UB, UC, PFC

# Create section objects using the designations
beam = UB("457x191x67") # Universal Beam
column = UC("305x305x137") # Universal Column
channel = PFC("430x100x64") # Parallel Flange Channel

# Access properties immediately
print(f"Beam moment of inertia: {beam.I_yy} cm⁴")
print(f"Column mass: {column.mass_per_metre} kg/m")
print(f"Channel shear center: {channel.e0} mm")

Documentation

• Installation Guide - Get started quickly
• User Guide - Comprehensive feature documentation
• Examples - Practical usage examples
• API Reference - Complete API documentation

Eurocode Classification Example

from steelsnakes.EU import (
    IPE,
    ElementInput,
    ElementStressCase,
    StressPattern,
    classify_section,
)

section = IPE("IPE-750x220")

compression_result = classify_section(section=section, fy_mpa=355.0)

bending_result = classify_section(
    section=section,
    fy_mpa=355.0,
    stress_pattern="bending-major-axis",
)

combined_result = classify_section(
    fy_mpa=275.0,
    custom_elements=[
        ElementInput(
            name="web",
            kind="internal",
            c_mm=360.4,
            t_mm=7.7,
            stress=ElementStressCase.COMBINED,
            alpha=0.70,
        )
    ],
)

print(compression_result.section_class)
print(bending_result.section_class)
print(combined_result.section_class)

stress_pattern accepts either a simple string like "compression" or "bending-major-axis", or the enum value StressPattern.MAJOR_AXIS_BENDING.

Contributing

All contributions are welcome! See the Contributing Guidelines for details.

License

This project is licensed under the GNU General Public License v2.0. See the LICENSE file for details.

Acknowledgments

• SCI (Steel Construction Institute)
• ArcelorMittal
• AISC (American Institute of Steel Construction)
• SAISC (South African Institute of Steel Construction)