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Metalwork Quantities (gate, railing, grille)

Choose a gate, a railing or a window grille, enter its dimensions, the tube sections and the bar spacing from your workshop drawing. PRAXAO works out the frame tube, the infill bars, the posts, the weight of steel, the tubes of 6 m to buy with the offcuts, and the surface to paint. The drawing shows the work in 3D and in elevation.

Configuration

Dimensions

cm
cm
cm

From the workshop drawing. Any safety rule on the maximum gap or the height comes from the regulation that applies to your work: this tool checks none.

cm
mm
mm
mm
mm
g/cm³
m
%

Enter the dimensions to see the drawing.

Calculation results

Fill in the fields to see the result.

Preliminary estimate from the values entered: not a structural validation and not an execution plan. Check the local rules and the manufacturers’ data.

Your last inputs are kept in this browser.

Results are provided for information. Check tax rates and legal requirements that apply to you.

How to use it

  1. Choose a gate, a railing or a window grille.
  2. Enter the dimensions and the bar spacing.
  3. Replace the starting values (tube sections, embedment, tube length) with the workshop’s data.
  4. Read the tubes to buy, the weight and the paint surface, with the offcuts included.

Examples

Worked example — Gate (portail) — Width 300, Height 200, Spacing of the infill bars (centre to centre) 12

Frame tube, total length: 17.72 m · Infill bars: 24 · Infill bars, total length: 46.08 m · Posts, total length: 4.80 m · Frame tubes to buy: 4 · Infill tubes to buy: 9 · Total steel weight: 82.44 kg · Surface to paint (outer faces): 6.52 m² · Hinges: 2

Frequently asked questions

Does it check strength or safety rules?

No. It counts what a layout requires. Strength, wind and impact loads, and any rule on guard height or the gap between bars come from the regulation that applies to your work and from the workshop drawing.

How is the weight found?

A metre of square tube weighs (side² − (side − 2 × wall)²) × density ÷ 1 000 kg. Each section is multiplied by its total length; the density of steel is editable.

How are the bars counted?

Between the uprights of the frame, one bar every spacing, centre to centre: ⌈clear width ÷ spacing⌉ − 1. Each bar is as long as the clear height between the rails.

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Rebar Weight Calculator

Weight of reinforcing steel from diameter and length, laps included, and the 12 m bars to buy.