Path Drainage Ditches / Pipe Culverts
This is an old version of the page
Date published: 30 March, 2015
Date superseded: 1 March, 2017
Aim
The aim of this item is to provide the effective drainage that is essential for paths to be comfortable to use and to avoid erosion and deterioration. Drainage capacity should allow for severe weather flows.
The open drainage ditches generally run beside and parallel to the path to intercept, channel and divert water, and culverts generally cross below paths to take water from one side to the other.
Eligibility
Any land is eligible and the drainage should be part of an upgraded or new path.
Requirements
Open ditch – V-shaped or U-shaped section:
- excavate ditch by machine
- 200 to 300 millimetre deep channel
- 300 to 450 millimetres wide at top
- sides angled slightly for stability
- spoil should be spread evenly and neatly on the lower side of ditch
Piped culverts:
- excavate trench (by machine) of sufficient depth to fully intercept drainage water and to allow a level finished-path surface
- lay sub-base in bottom of trench
- place twin-wall plastic pipe on sub-base
- cover pipe and back fill trench with sub-base
- build 150 to 450 millimetre thick stone headwalls around both pipe ends
- you must maintain a diary of photographic evidence of the construction phase, to include the works below ground level
Payment
You can claim:
- open ditch: £1.88 per metre
- piped culverts: 300 millimetre diameter pipe: £143 each
- piped culverts: 450 millimetre diameter pipe: £395 each
Inspections
The inspectors will check:
- the location and extent of the work
Open ditch – V-shaped or U-shaped section:
- ditch excavate by machine
- 200 to 300 millimetre deep channel
- 300 to 450 millimetres wide at top
- sides angled slightly for stability
- spoil should be spread evenly and neatly on the lower side of ditch
Pipe culverts:
- you have maintained a diary of photographic evidence of the construction phase, to include the works below ground level