Renovation case with half-perimeter coverage
Input
Perimeter 48.6m / Height 6.0m / Coverage 0.50 / Mesh ON (10%) / Protection ON (15%)
Output
Scaffolding area 145.8m², Mesh 160.4m², Protection 167.7m²
Scaffolding Area Estimate (Perimeter × Height + Accessory Area)
If you have drawings, enter perimeter directly. If not, estimate it from shape and get a one-minute rough quantity.
This is for estimating and pre-planning only. It must not be used for scaffold design, strength checks, or safety planning.
Perimeter input: direct value or shape-based estimate
Coverage factor and covered perimeter shown together
Safety-use restriction shown at all times
Important Notice
- Safety requirements come first. This tool provides rough estimates and does not replace scaffold design, strength checks, or safety planning.
- For actual work, follow site conditions, regulations, specifications, and the contractor's standards.
What this tool does
- Calculates scaffolding area instantly from perimeter × height × coverage factor.
- Shows covered perimeter alongside coverage factor so assumptions are easy to verify.
- Calculates mesh sheet and protection area with loss in the same result panel.
- Supports URL sharing and copy-ready output for repeat use.
How to use
- In Step 1, enter perimeter directly or estimate it from shape.
- In Step 2, set scaffold height and coverage factor.
- In Step 3, optionally enable mesh/protection and set loss rates.
- Review the result card, then copy values or share via URL.
Sample
Adopt perimeter from rectangle estimate
Input
L=12m, W=10m -> Adopted perimeter 44m / Height 8m / Coverage 0.75
Output
Scaffolding area 264.0m²
Formulas
- Scaffolding area A = Perimeter × Scaffold height × Coverage factor
- Covered perimeter = Perimeter × Coverage factor
- Accessory area = A × (1 + Loss rate)
FAQ
What is coverage factor?
It is the portion of the building perimeter where scaffolding is installed. Typical references are 1.0 for full perimeter and 0.5 for half perimeter.
Should I input coverage factor or covered perimeter?
Either is fine. If you enter covered perimeter directly, the coverage factor is back-calculated automatically.
Can this output be used for safety planning?
No. This tool is for rough quantity estimation only. Actual work decisions must be made by qualified professionals and contractors.
Can I estimate mesh sheet count?
Yes. In the reference panel, select sheet size and overlap to get an approximate sheet count.
How many sides can polygon input handle?
You can input 3 to 12 sides. For highly irregular shapes, direct measured perimeter is recommended.
Notes
- This tool is an estimate. Actual quantities vary significantly by building geometry, ground conditions, nearby obstacles, regulations, and contractor standards.
- Safety requirements always take priority. This tool is not intended for scaffold design, strength checks, or safety planning.
- Actual execution must be performed under qualified professional and contractor judgment.