Strucit predicts Wi-Fi coverage on your floor plan, per band, taking every wall’s material into account and letting signal travel through open doorways, so you can see weak spots before a single access point goes on the wall.
How it works
- Get the floor plan in. Draw walls, doors and windows, or upload an image of the plan and let wall detection trace it for you. Set the scale so distances are real.
- Set the wall materials. Pick drywall, wood, brick or concrete per wall, or set a default before you draw. This is where most of the accuracy comes from.
- Place access points. Drop APs where you plan to mount them and give each one a band (2.4, 5 or 6 GHz) and a transmit power. Or let Strucit suggest the placement.
- Turn on the heatmap. Coverage is drawn over the plan: green is strong, red is weak, and it fades out where there is no usable signal. Move an AP and the map updates.
- Read the coverage. Strucit shows the share of the rooms that gets good signal. Mark a room as excluded (a stairwell, a storage room) and it leaves the target.
What the model takes into account
- Distance and band. Higher bands lose signal faster with distance: 6 GHz reaches less far than 5 GHz, which reaches less far than 2.4 GHz.
- Wall materials, per band. Every wall costs signal, and the cost rises with frequency. At 5 GHz a drywall partition costs about 7.5 dB, a concrete wall about 28 dB. The full table is in the PDF export, so your client can see it too.
- Doorways and windows. Signal isn’t scored along one straight line. Strucit finds the cheapest path to each point, so a room behind a concrete wall still gets signal through its open door, the way it does in real life.
- Several access points together. Overlapping APs add up their power, instead of just taking the strongest one, so overlap zones read correctly.
| Material | 2.4 GHz | 5 GHz | 6 GHz |
|---|---|---|---|
| Drywall | 3.5 dB | 7.5 dB | 9.5 dB |
| Wood | 3.5 dB | 5 dB | 7.5 dB |
| Brick | 9 dB | 17.5 dB | 22.5 dB |
| Concrete | 18.5 dB | 28 dB | 32.5 dB |
Free and Pro
Drawing the plan, placing access points and exporting a PNG are free, with no account. The heatmap, automatic AP placement and the PDF report with one coverage sheet per band are Pro.
What it doesn’t do
- It predicts; it doesn’t measure. There is no survey mode with a real adapter.
- One plan is one floor. Signal between floors isn’t modeled.
- No interference or channel planning, and no signal-to-noise ratio: the map shows signal strength (RSSI).
- The attenuation values are published averages, not measurements of your building. If you know a wall is unusual (metal, very thick), set it to the closest heavier material.
Hand it to the client
The heatmap goes into the Pro PDF export as one sheet per band, with a legend, a scale, and a table of the numbers behind it. It’s the same map you planned with, so what you promise is what you show.