Examples

These examples follow the papermodels examples and take each one to completion. Each builds the papermodels GeometryGraph from the same drawing, then runs the load rundown with loadtracer, down to the reactions at the foundation.

Example	Shows
Example 1	Joist arrays to foundation; joist loads as line loads and as occupancy × trib width
Example 2	Manually tagged elements; when point joist loads matter (a variable joist array on a continuous beam)
Example 3	Load transfer through walls; roof joists on a wall; a wall line load onto a beam
Example 4	Columns and walls; a continuous beam with an uplift reaction
Example 5	A multi-page plan on one sheet; a column that transfers to one beam rather than every element it touches
Example 6	User-drawn trib areas and irregular loading areas (no joists)

Each notebook:

1. builds the graph with papermodels,

2. sets the occupancy pressures (psf, since the drawings are in feet),

3. runs loadtracer and checks that all of the applied load reaches the bottom,

4. follows one member through: converted joist loads, expanded loads, analysis model and reactions,

5. compares joist loads as point loads and as distributed loads,

6. lists the reactions at the bottom of the building.

The papermodels legend entries notebook explains the annotation legend used in the drawings.

Running the examples

Clone the repository and run the notebooks from their folders in Examples/. They use the development dependencies. Example 5 reads its PDF (37 MB) from the papermodels repository: set PAPERMODELS_EXAMPLES to the papermodels Examples directory, or keep papermodels next to loadtracer.

uv sync
uv run python Examples/run_all.py            # executes every notebook in place
uv run python Examples/run_all.py Example_3