Kotelys
Structural take-off, with the calculations.
Footings, slabs, walls, floors: draw on the architect's or engineer's drawings. Kotelys deducts the openings and writes out every calculation.
Windows 10 and 11. Free during the beta.
| L1 20x40ht | 23.62 ml |
|---|---|
| SF1 60x30ht | 41.31 ml |
| SF2 50x25ht | 44.94 ml |
| Ground-bearing slab 15cm | 219.92 m² |
| Lift pit raft 20cm | 2.90 m² |
| M1 120x120x40ht As=-0.90 | 2 u |
| M2 80x80x40ht | 2 u |
| M3 60x60x40ht | 4 u |
| M4 200x50x40ht | 1 u |
The same drawing, in Kotelys.
The take-off drawn on the drawing, the quantities sorted by type in the Objects panel, each in its colour.
A real drawing exported by Kotelys: Drawing set of the apartment block: foundations, first-floor slab, elevations (PDF, 515 KB)
The take-off on video
1:01What you measure, and how.
Three tools are enough: length, area and count. Each type keeps its colour, from the drawing to the report.
| Item | In Kotelys | Unit |
|---|---|---|
| Strip footings, ground beams | LengthLength; the section in the type name | ml |
| Ground slabs, floors, rafts | AreaArea, voids deducted | m² |
| Slab concrete | AreaArea × thickness | m³ |
| Concrete and masonry walls | LengthLength × height, openings deducted | m² |
| Slab joints, ring beams | LengthLength | ml |
| Columns, lintels, builder's work holes | CountOne click per item | u |
Further reading: Structural work take-off: foundations, reinforced concrete and masonry
Why Kotelys for this package.
Calculations anyone can check
Every calculation is written out: segments, height, deducted openings. A colleague or a client can check it line by line.
Several levels on one sheet
Ground floor and first floor slabs side by side on the same PDF: one zone per level is enough.
The site plan as well
The same project holds the site layout plan: cranes, welfare facilities, fencing.
Frequently asked questions
Another question? Write to us.
Is Kotelys suited to a masonry or structural works contractor?
Yes: footings, ground beams, walls, slabs and blockwork are measured on the architect's or structural engineer's drawings, with the concrete volumes. Reinforcement is not calculated: take it from your ratio or the bar schedule.
Does Kotelys calculate concrete volumes?
For an area, yes: give the thickness and Kotelys writes the volume. For a wall it gives the area (length × height, openings deducted); multiply by the thickness in your estimate for the volume.
Are small openings deducted?
You decide: each type has its own threshold for voids not deducted. An opening smaller than that threshold is not deducted, as your bill of quantities requires.
Does Kotelys open DWG files?
No: Kotelys works on PDFs and images, scanned drawings included. Print a DWG to PDF at scale from your viewer.
How do I get the quantities into my estimate?
The Excel export gives a summary and the object-by-object detail, as fixed values. The PDF take-off calculations write out every calculation, to attach to your pricing.
How much does Kotelys cost?
The beta is free, by invitation. The announced price is €24.90 excl. VAT per month per computer, with a one-month free trial.
Other trades
Structure and external works
Envelope
Building services
Site preparation
The beta is open, by invitation.
Testers are in France for now. Elsewhere? Leave your details and we will let you know.
Windows 10 and 11, 64-bit. Free during the beta.