Dimensions and profiles
Cut list
| Part | Profile | Length (mm) | Qty | kg each | kg total |
|---|
Bars to buy
| Profile | Metres used | Pieces | Bars | Waste | kg used | kg bought |
|---|
Estimated cost
| Item | Quantity | Unit price | Value |
|---|
How it is calculated
- The hall has portal frames (two columns and two rafters) at equal spacing, with a gable roof. The number of frames is the length divided by the maximum spacing, rounded up, plus one.
- Columns have the eave height and rafters the length along the slope (half the span divided by the cosine of the angle). No haunches and no connection details.
- Purlins run along the slope, from eave to ridge, at the chosen spacing, one piece per bay between frames. Wall girts are the same, vertically.
- The end walls have columns at the chosen spacing and girts in pieces no longer than that spacing; below the ridge, the girt length decreases with the slope.
- Bracing is X-shaped, in the first and last bay, on both side walls and both roof slopes (8 diagonals on the walls and 8 on the roof).
- Base plates are square, one under each column. Areas do not include overhangs; walls are the sides plus the end walls (with the triangle under the ridge), minus the doors.
- Bars are filled simply: longest pieces first, with the blade thickness between them. The cutting program usually finds a better arrangement.
- The weight uses steel (7.85 g/cm³). Rolled sections (IPE, HEA, HEB, UPN) use the weights from the weight tables, and tubes and bars use the same formulas as the weight calculator. For Z or C purlins, choose “Custom profile” and enter the weight per metre from the manufacturer.
A quantity estimate, not a structural design. The calculator does not check strength, stability, connections or foundations and does not account for snow, wind or earthquake. A hall is designed by a qualified specialist; use the result for quotes and orders, not for sizing.
Frequently asked questions
Does the calculator size the hall?
No. It calculates quantities (bars, weight, areas) for the profiles you choose, usually from the design. It does not check strength, stability, connections or foundations and does not account for snow, wind or earthquake.
Who designs a hall?
A hall is designed by a qualified specialist, with the verification required by the legislation in force. The calculator helps you request and compare quotes, but it does not replace the design.
What does the weight per built m² mean?
It is the weight of the steel divided by the built area (length × span). It depends strongly on span, height and loads, so use it as an order of magnitude for quoting, not as a check of a design.
What does the calculator not include?
Foundations, connections and bolts, windows, gutters, insulation, services and labour. Panels appear as an area and, if you enter the price, as a cost. Lengths are theoretical, without connection details.
How do I import the list into the cutting program?
Download the CSV file and import it into the cutting program (step 1). Rolled sections (HEA, IPE, UPN) and tubes are recognised by name.