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ci / test (push) Successful in 6m18s
History-free snapshot of the private development repository at cbe45c5 (2026-09-09). Code, docs and public catalogue only; no plant or job knowledge layers, no client or job names (tools/scrub.py clean). The intro deck is left out of this snapshot because its slide images could not be checked for job drawings.
73 lines
2.7 KiB
Python
73 lines
2.7 KiB
Python
# -*- coding: utf-8 -*-
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"""An insert is worth less at release than at 28 days.
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A catalogue rating is derived at one concrete strength and the anchor pulls a
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cone of concrete out, so below that strength the capacity follows sqrt(f'c).
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One handling report checks the same insert at stripping AND at erection, which
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is why the rating cannot be derated once on the way in: it has to be done per
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stage, at the strength that stage actually has.
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"""
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import dataclasses
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import pytest
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from conftest import make_panel
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from panellift import checks, pci, statics
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from panellift.model import Stage
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def rated_panel(basis=3500.0, capacity=8000.0):
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panel = make_panel()
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return dataclasses.replace(panel, lifters=[
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dataclasses.replace(l, capacity_lb=capacity, basis_fc_psi=basis)
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for l in panel.lifters])
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# ------------------------------------------------------------- the factor
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def test_below_the_basis_it_follows_the_square_root():
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assert pci.insert_derate(3500.0, 2500.0) == pytest.approx(0.8452, abs=1e-4)
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def test_at_or_above_the_basis_nothing_is_gained():
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"""Past the basis the anchor's own steel governs; stronger concrete around
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it does not make the anchor stronger."""
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assert pci.insert_derate(3500.0, 3500.0) == 1.0
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assert pci.insert_derate(3500.0, 6000.0) == 1.0
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def test_an_unstated_basis_does_not_silently_reduce_a_rating():
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assert pci.insert_derate(None, 2500.0) == 1.0
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assert pci.insert_derate(3500.0, None) == 1.0
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# --------------------------------------------------------- through a check
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def test_the_same_insert_is_rated_differently_at_two_stages():
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panel = rated_panel()
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lifter = panel.lifters[0]
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at_release = Stage('stripping', 1.3, 2500.0)
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at_28 = Stage('erection', 1.2, 6000.0)
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assert checks.rated(lifter, at_release) == pytest.approx(6761, abs=1)
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assert checks.rated(lifter, at_28) == pytest.approx(8000, abs=1)
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def test_the_capacity_check_uses_the_derated_number(rolling):
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panel = rated_panel()
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stage = Stage('stripping', 1.3, 2500.0)
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a = statics.analyse(panel, stage, rolling, role='strip')
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inserts = [f for f in checks.check_insert_capacity(a, rolling)
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if f.code == 'INSERT']
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assert inserts
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assert 'derated from 8,000 lb' in inserts[0].message
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def test_no_basis_means_the_rating_is_taken_as_stated(rolling):
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"""A plant that types a number into capacity_lb meant that number."""
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panel = rated_panel(basis=None)
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stage = Stage('stripping', 1.3, 2500.0)
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a = statics.analyse(panel, stage, rolling, role='strip')
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inserts = [f for f in checks.check_insert_capacity(a, rolling)
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if f.code == 'INSERT']
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assert inserts and 'derated' not in inserts[0].message
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