830 feature request check for strength of steel i profiles class 3

[GerjanDorgelo]

Description

This branch depends on #834 and will therefore feature the same LoadCombination code once again.

This branch is a showcase of what automated steel checks using various formula and multiple sub-checks could look like. Let's discuss the structure openly before I add all other checks using sub-issues (to make sure i'm not making super big PRs).

There is a dependency in how @SZeltaat will leave a few features in his WIP branch. This code requires access to

• the area, now as heb_profile.section_properties.area
• the yeild_strength, now aquired by min(element.yield_strength for element in heb_profile.elements). Currently, this uses the local thickness of various elements to see if the entire beam needs to be evaluated as 335 MPa instead of 355.

But even with these two, for now, questions left behind us. How do we want (steel) checks using various formula and multiple sub-checks to be evaluated?

Fixes #830

Type of change

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

Checklist:

• I have added tests that prove my fix is effective or that my feature works
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• New and existing unit tests pass locally with my changes

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[Copilot]

Pull Request Overview

This PR introduces a showcase implementation of automated steel strength checks for Class 3 I-profiles according to Eurocode 3. The implementation demonstrates a structure for performing multiple sub-checks using various formulas, specifically focusing on normal force resistance checks for both tension and compression cases.

Key changes:

• Introduces LoadCombination dataclass to represent load combinations with clear sign conventions
• Implements SteelIProfileStrengthClass3 with a nested NormalForceCheck class for evaluating normal force resistance
• Provides comprehensive test coverage for both the main check class and the normal force sub-check

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
blueprints/checks/loads/load_combination.py	Defines a frozen dataclass representing load combinations with detailed documentation of axis conventions and sign definitions
blueprints/checks/steel/strength/steel_i_profile_strength_class_3.py	Implements the main strength check class with a nested normal force check that applies Eurocode 3 formulas for tension and compression
tests/checks/loads/test_load_combination.py	Comprehensive tests for LoadCombination including initialization, equality, and hashability
tests/checks/steel/strength/test_steel_i_profile_strength_class_3.py	Tests for both the main check class and the normal force sub-check, including parametrized LaTeX output validation
tests/checks/steel/strength/conftest.py	Provides a reusable fixture for creating HEB300 profile instances with section properties

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (2196f82) to head (3470277).
⚠️ Report is 6 commits behind head on 840-feature-request-add-first-steel-check-to-blueprints.

Additional details and impacted files

@@                                    Coverage Diff                                     @@
##           840-feature-request-add-first-steel-check-to-blueprints      #836    +/-   ##
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  Coverage                                                   100.00%   100.00%            
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  Files                                                          393       395     +2     
  Lines                                                        12106     12271   +165     
==========================================================================================
+ Hits                                                         12106     12271   +165     

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