showcase_sample_report.md

# Showcase sample — portal frame sizing

**sample_id:** `pf-000001`

## Inputs

| Parameter | Value |
|-----------|------:|
| span | 22.497326935069324 |
| h_eaves | 4.616717194182547 |
| pitch | 5.691771717057678 |
| frame_spacing | 7.324378430028224 |
| base_fixity | pinned |
| v_b0 | 27.5986697207102 |
| terrain | II |
| s_k | 0.66553776466785 |
| g_k_add | 0.49815714340204886 |
| grade | S275 |

## Outputs

| Field | Value |
|-------|------:|
| column | IPE400 |
| rafter | IPE450 |
| total_mass_kg | 4733.2 |
| eco2_kg | 7099.9 |
| max_utilization | 1.032 |
| converged | False |
| governing clause | SLS_deflection_vertical_L/200 |
| governing limit state | SLS |

## Trajectory (first/last steps)

- iter 1: column IPE200 u=12.239 → step_up
- iter 2: column IPE220 u=11.275 → step_up
- iter 3: column IPE240 u=10.594 → step_up
- iter 36: rafter IPE450 u=0.787 → step_down
- iter 37: rafter IPE400 u=1.032 → accept_oscillation