BUILDING & PLANNING · FIELD TOOL

Construction Site Fencing Calculator

A 60 × 40 m site has a 200 m fence line. Less two 7 m gates, 186 m of temporary mesh fencing in 3.5 m panels needs 54 panels, 56 feet and 56 clamps, with a ballasted stay every 5 panels (11 stays).

Inputs

Results update as you type.

Site
m
m
Fence
m
m
Gates
m
Site fence plan60 m40 m54 × 3.5 m · 2 gatesmyconstructioncalculator.com
Diagram updates as you type.

Results

Check the working before you order.

Fence panels
54× 3.5 m
Feet / blocks56
Couplers / clamps56
Stays with ballast11
Gates2 × 7.0 m
Fence line200.0 m

Add stays at corners, gates and where scaffold sheeting or banners add wind load.

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Working
  1. Panel run = 200.0 − 2 × 7.0 gates = 186.0 m; panels = ⌈run ÷ 3.5⌉ = 54
  2. Feet and clamps: one per panel joint on a closed loop, plus gate ends
  3. Stays every 5 panels = 11

Results are estimates for planning and material ordering only. They are not a substitute for structural design or approval by a qualified engineer. Read the full disclaimer.

Formulas

Panels   = ⌈(perimeter − gates × gate width) ÷ panel width⌉
Feet     = panels + gates;   clamps = panels + gates
Stays    = ⌈panels ÷ stay interval⌉
Posts    = ⌈fence run ÷ post spacing⌉ + 2 per gate

Worked Example

60 × 40 m site, two 7 m gates, 3.5 m panels, stays every 5:

  1. Perimeter = 200 m; run = 200 − 14 = 186 m
  2. Panels = ⌈186 ÷ 3.5⌉ = 54
  3. Feet = 56, clamps = 56, stays = 11

Temporary Fence Panels by Site Size

3.5 m panels, one 7 m gate, a stay every 5 panels.

Site Perimeter Panels Feet and clamps Stays
30 × 20 m 100 m 27 28 6
50 × 30 m 160 m 44 45 9
60 × 40 m 200 m 56 57 12
100 × 60 m 320 m 90 91 18

Frequently Asked Questions

How many temporary fence panels do I need?

Divide the fence length (less gate openings) by the panel width, usually 3.5 m (about 10–11.5 ft), and round up. A closed loop needs one foot and one clamp per panel, plus gate ends.

How many stays do temporary fences need?

Often one every 4–6 panels, and more at corners, gates and anywhere sheeting or banners add wind load.

When is a solid hoarding needed?

Next to public roads and footpaths, for security, noise or dust, or where the local authority requires it, often with a licence and a design check for wind.

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