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Glass reinforced cement headwall - 80-190mm knock out (grate sold separately)

Regular price
£74.40 (£62.00 ex VAT)
Regular price
Sale price
£74.40 (£62.00 ex VAT)
Est. delivery: 2-3 working days

Headwalls are an integrated wall located at either end of drainage pipe or a stream crossing structure. A wall built at a pipe inlet is a headwall.

The strength and durability of precast concrete headwalls preserves the surrounding environment by minimising erosion at the outfall connection.

Precast headwalls are an important part of most SUDS drainage schemes, preventing erosion at the point of discharge into watercourses such as attenuation ponds, detention basins, rivers and ditches.

Features and Benefits
- Low maintenance
- They have a long lifespan 
- Various sizes available
- Cost effective solution

Technical drawing

Full Description

What are the benefits?

- Can be pre-fitted with closed coupled and cranked gratings
- Various sizes available each with various height options
- Prefabricated off-site under factory conditions
- Reinforced and strong so can resist erosion
- Can be installed at a fraction of the cost of an in-situ unit with no on-site shuttering or formwork required
- Greatly reduced installation time on site (minimising on-site labour and costs)
- No or minimal on-site fabrication
- Low maintenance
- Longevity
- Offer a design specific solution
- Cost effective solution

Installation Guide
Dig out sufficiently to allow the headwall flanges to finish flush with the batter. Take the outfall pipe (minimum length 1.5m of rigid impervious pipe) and slide it though the headwall so that it protrudes approximately 50mm. Make a good connection with the land drain and seal by returning approximately 150mm of soil into the trench and consolidating. Unravel the string and draw the anchor back along the trench as the rest of the backfilling is completed.

Technical Specification

Cut out: 80-190mm

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Further questions?

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