smillmorel
d5ac3fca7e
Collection of engineering calculation projects (Python + Typst), each with input, calc script, tests, results, and generated PDF where available.
70 lines
2 KiB
Python
70 lines
2 KiB
Python
from pathlib import Path
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import importlib.util
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import pytest
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import yaml
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HERE = Path(__file__).resolve().parent
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spec = importlib.util.spec_from_file_location("concrete_beam2_calc", HERE / "calc.py")
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assert spec is not None and spec.loader is not None
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calc_module = importlib.util.module_from_spec(spec)
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spec.loader.exec_module(calc_module)
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compute = calc_module.compute
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def load_input():
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with (HERE / "input.yaml").open(encoding="utf-8") as handle:
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return yaml.safe_load(handle)
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@pytest.fixture
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def result():
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return compute(load_input())
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def test_example_demands(result):
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v = result["values"]
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assert v["self_weight_klf"] == pytest.approx(0.1)
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assert v["wu_klf"] == pytest.approx(0.7325)
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assert v["Mu_kipft"] == pytest.approx(23.44)
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assert v["Vu_kip"] == pytest.approx(5.86)
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def test_example_flexure(result):
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v = result["values"]
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assert v["a_in"] == pytest.approx(1.519608, rel=1e-5)
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assert v["et"] == pytest.approx(0.017137, rel=1e-3)
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assert v["phi"] == pytest.approx(0.9)
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assert v["phiMn_kipft"] == pytest.approx(26.133456, rel=1e-5)
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assert result["checks"]["flexure"]["ok"] is True
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def test_example_min_steel_and_shear(result):
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v = result["values"]
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assert v["As_min_in2"] == pytest.approx(0.384, rel=1e-4)
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assert v["phiVc_kip"] == pytest.approx(7.887205, rel=1e-4)
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assert result["checks"]["minimum_steel"]["ok"] is True
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assert result["checks"]["shear"]["ok"] is True
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def test_alternate_units_match_default(result):
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alt = load_input()
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alt.update(
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{
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"span": "192 in",
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"tributary": "75 in",
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"fc": "3000 psi",
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}
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)
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converted = compute(alt)
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for key in ("span_ft", "tributary_ft", "fc_ksi", "Mu_kipft", "phiMn_kipft", "Vu_kip"):
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assert converted["values"][key] == pytest.approx(result["values"][key], rel=1e-6)
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def test_wrong_dimension_is_rejected():
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bad = load_input()
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bad["span"] = "16 kip"
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with pytest.raises(ValueError, match="span"):
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compute(bad)
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