► RELN | Risers

Drainage Pit Riser Extensions for Stormwater Pit Systems

Stormwater drainage systems must align precisely with finished ground levels to ensure water flows correctly into pits & channels. RELN Risers provide adjustable drainage pit riser extensions that raise stormwater pits so grates & covers sit flush with surrounding concrete, paving or landscaped surfaces.

During construction the final surface height often changes after the drainage pit has already been installed. Driveways may receive additional concrete layers, paving may be added or soil levels may be raised during landscaping. Stormwater pit risers allow installers to extend the height of drainage pits without replacing the base chamber ensuring the system remains aligned with the finished ground level.

RELN pit risers are designed to integrate directly with RELN stormwater pit systems allowing contractors to adjust the vertical height of the chamber while maintaining proper drainage flow & access for maintenance.

Drainage pit installation typically begins with preparing the pit opening using Concrete Cutting & Drilling Tools, strengthening surrounding surfaces with Concrete Reinforcement & positioning pit components across the worksite using Material Handling Equipment.

Installation teams frequently rely on Scaffolding & Access Equipment, safe positioning tools like Extension Ladders, protective gear including Safety & Personal Protective Equipment & layout tools such as Measuring & Leveling Tools to ensure pit risers are aligned accurately within the finished drainage system.

Where stormwater pits must be raised to match final surface levels RELN risers provide a practical solution that keeps drainage systems operating efficiently.

What’s in This Collection:

► RELN pit riser extensions
‣ Extend RELN stormwater pits so grates & covers align with finished surface levels

► RELN drainage pit riser collars
‣ Provide additional height to RELN pit chambers during installation

► RELN stormwater pit riser sections
‣ Allow installers to adjust pit height after paving or landscaping

► RELN pit extension rings
‣ Add vertical height to drainage pits without replacing the base chamber

► RELN modular pit risers
‣ Designed to integrate with RELN drainage pit systems for accurate elevation

► RELN pit height adjustment collars
‣ Help align pit covers flush with surrounding surfaces

► RELN replacement pit risers
‣ Restore or modify existing drainage pits when ground levels change

► RELN stormwater pit extension components
‣ Maintain proper drainage pit elevation across landscaping & construction projects

Using the correct riser height ensures drainage pit covers remain level with surrounding surfaces while maintaining reliable stormwater performance.

Trade Applications for RELN Risers

Drainage pit risers are widely used across projects where stormwater pits must align with finished surface levels.

► Residential driveway drainage installations
‣ Raise pit openings so drainage covers align with finished concrete or paving

► Landscaping & garden drainage systems
‣ Adjust pit height after soil or paving levels are established

► Civil stormwater infrastructure projects
‣ Extend drainage pits within large stormwater pipe networks

► Commercial construction developments
‣ Align inspection pits with finished walkways, car parks & service areas

► Industrial facilities & logistics yards
‣ Maintain flush drainage pit covers across traffic surfaces

► Property drainage upgrades & resurfacing
‣ Modify pit heights during driveway renovations or landscaping upgrades

Across these environments risers allow installers to adjust pit height without rebuilding the entire stormwater system.