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 |
|---|
How it is calculated
- The fence is straight and divided into equal panels, with a post at each end of every panel.
- Each panel has rails between the posts, over the full width between them, and pickets welded to the rails.
- The pickets start at the distance from the ground you set and reach the height of the fence.
- The posts are buried; the concrete in the footings is calculated as the volume of the hole minus the post, without losses.
- Rectangular profiles are mounted with the long side in the plane of the fence.
- Bars are filled simply: longest pieces first, with the blade thickness between them. The cutting program usually finds a better arrangement.
- The weight uses the chosen material (carbon steel, 7.85 g/cm³, by default) and the same formulas as the weight calculator, with the rounded corners of the tubes (EN 10219).
- For each profile you can choose “Custom profile”, with your own dimensions (square or rectangular tube, round or square bar, flat bar), and the material can be anything, with your own density.
A material estimate, not a strength calculation. For large, automated or wind-exposed constructions, ask for a strength calculation.
Frequently asked questions
How many posts do I need for a fence?
A straight fence has one more post than panels. The calculator divides the length by the maximum distance between posts you choose (rounded up), then equalises the panels.
How much concrete do I need for the posts?
The calculator subtracts the volume of the post from the volume of the hole (the diameter and depth you choose), for each post. It is a theoretical volume, without losses, so the order should include a margin.
What burial depth should I choose?
It depends on the height of the fence, the soil and the frost depth in your area. Check the local values; the calculator only adds the buried part to the length of the post.
What gap do I leave between pickets?
For children’s safety, at most 100 mm clear is often recommended, a commonly used rule (check the standards that apply). The calculator makes the gaps between pickets equal.
What does the calculator not include?
Gates, accessories, post caps, paint or galvanising, welding consumption and labour. It does not check the strength of the fence against wind or impact.