calcs/concentric-footing/TASKS.md

Tasks: Concentric Footing Analysis

Ordered, dependency-ordered plan. Each task has a spec in tasks/: 001_calc_and_input.md, 002_numerical_tests.md, 003_typst_sheet.md, 004_docs_refresh.md, 005_review.md.

#	Task	Files	Status	Depends on
001	Numerical core: calc.py + input.yaml + results.json	calcs/concentric-footing/calc.py, calcs/concentric-footing/input.yaml, calcs/concentric-footing/results.json	DONE	—
002	Numerical lock: test_concentric_footing.py (compute() only)	calcs/concentric-footing/test_concentric_footing.py	DONE	001
003	Presentation: footing.typ + compile + Typst metadata tests	calcs/concentric-footing/footing.typ, calcs/concentric-footing/generated/footing.pdf, calcs/concentric-footing/test_concentric_footing.py (append)	DONE	001, 002
004	Documentation refresh: README.md + codemap.md	README.md (at worksheets/calcs/wood-joist/README.md and/or worksheets root), codemap.md	DONE	003
005	Reviewer pass on the whole calculation	review notes only	DONE	004

Notes

• Task 001 is the numerical single source of truth; it pins every results.json value name and the exact ACI 318-19 equations. Tasks 002-005 depend on that contract.
• The Typst metadata tests (soil/structural reconciliation) live with Task 003 because they need footing.typ to exist; Task 002 is purely numerical to keep the dependency graph acyclic.
• generated/ may not exist yet; Task 003 creates it before compiling.
• All tasks use hybrid Pint pattern: quoted quantity strings in YAML, quantity() conversion in Python, values+checks contract, presentation-only Typst.
• Load determination is derived in Typst (DLr, LLr, Br, Lr, Ar, column weight) and emitted as <concentric-footing-loads>; Python reads checked Ps/Pu. The suite reconciles them.