Structural design for Nigerian building engineering — bungalows up to eight-storey frames. Load takedowns, column grids, bar bending schedules to BS 8666, costed quantities and drawings, from your phone or your browser.
Open Structura in your browser No install. Same account as the app.
What it designs
- Whole-building takedown and per-column grid, corner to interior
- Slabs, beams, columns (slender and biaxial), pad, strip and raft footings
- Stairs, lintels, and wind with sway and stability checks
- Fire resistance and robustness ties, reported on every building
Every result is a step-by-step calc sheet: formula, substituted values and a PASS or FAIL on each check. Gravity-only designs stop at four storeys; above that a wind path is required, and the sheets say so.
How tall it goes
| Path | Limit | Why it stops there |
|---|---|---|
| Gravity only | 4 storeys | No lateral load considered |
| Wind, braced walls or core | 8 storeys | Beyond needs dynamic wind and a stiffness analysis |
| Wind, moment frame | 8 storeys | Same |
A moment frame has its sway checked against h/500 and its stability index reported, so a first-order design says whether it is still valid. Wind is checked in both directions and the worse governs. The wind speed you enter is used as given — an effective gust speed at roof level, with no terrain or height factor applied on top.
Scope and limitations
A PASS means the design checks out for the loads entered, not that a building is safe to build. There is no seismic design, no piled foundation, and settlement is not calculated. Bar bending schedules use simplified anchorage and lap assumptions that are stated on the sheet and must be confirmed at detailing. Every output carries the licensed-engineer disclaimer, and a reviewing engineer is assumed.
Credits
Single members — slab, beam, column, footing, stair, lintel, raft, wind — are free, however many you run. A credit unlocks one project: a whole-building takedown or a column grid. Revising that project, re-running it and re-exporting it are free forever.
| Building | Cost |
|---|---|
| Up to 3 suspended floors | 1 credit |
| 4 to 7 suspended floors (wind design) | 2 credits |
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