[✨ Feature request]: Add formula 5.15 from NEN_EN_1992_1_1_C2_2011

[bro-wi]

Description

Add formula 5.15 from NEN_EN_1992_1_1_C2_2011

Acceptance Criteria

• [ ] Add the formula to the code
• [ ] Add latex expression to the formula
• [ ] Add unittests
• [ ] Add docstrings
• [ ] Update table in docs with :heavy_check_mark:

Dependencies

not applicable

Confirmation

• [X] I have checked that this feature does not already exist in the issue tracker.
• [X] I have read and understood the contribution guidelines.

[MaartenBW]

@bro-wi and @egarciamendez In this equation, there are K1 and K2. But these k-factor is defined by another equation in the defenition. Would i implement the equations with the k factors or the underlying inputs for those k-factors (twice).

I would opt for the first option. and maybe implement the formula for the k-factor seperately.

what do you guys think?

[egarciamendez]

Good question @MaartenBW , In those cases we usually make it possible to 'insert' your own calculated value. For example values for k1 and k2 previously calculated outside this class and when a formula for those values are present inside Blueprints then link them in the docstring. See this example from formula 2.1a:

[bro-wi]

I agree with Enrique. Because the equations for k1 and k2 are not 'numbered' or 'labeled' you can have a look at this file, where it is called a 'SubFormula' :

blueprints/codes/eurocode/nen_en_1992_1_1_c2_2011/chapter_3_materials/formula_3_4.py

[MaartenBW]

thanks, this was what i was looking for

[egarciamendez]

Hi Maarten, do you need any help with this one?