JFC Civils products

JFC CorriPipe™ is a twinwall drainage pipe manufactured from recycled HDPE. Utilising a twin extrusion process, the two layers are simultaneously extruded one inside the other and heat welded together in one continuous step. The outer wall is corrugated providing excellent structural strength which reduces the possibility of on-site damage. The inner wall has a smooth seamless finish to assist hydraulic flow. The design unlike traditional single-wall pipe prevents silt accumulation.

JFC has further expanded its range of CorriPipe™ products with the introduction of 750mm, 900mm and 1050mm sizes. These sizes are manufactured using the most advanced extrusion and polymer processing technology available. This technology is coupled with cutting edge materials to provide the ultimate large diameter surface and stormwater drainage pipe.

JFC design a range of catchpits/ silt traps to separate silt and other particles. This improves the quality of water before it is reintroduced back into the drainage system. As each individual SuDS system is different, they are individually fabricated to take into account water flow rates and ground conditions that differ from site to site. JFC catchpits have been widely and successfully used for applications including railway and highway drainage systems.

The JFC HydroChamber is an arched chamber attenuation system designed specifically for building underground storage tanks for stormwater runoff in attenuation and soak away applications. Its superior design makes it suitable for building storage tanks under HGV trafficked and car park areas as well as non-trafficked areas (e.g. green amenity areas). JFC HydroChambers have many advantages over other similar products including BBA certification for HGV loading, superior structural strength, silt management, maintenance and inspection capabilities and cost effectiveness. The HydroChambers are manufactured from high density polyethylene plastic and are backfilled with 35/50mm clean washed crushed stone. The corrugated arch shape of the HydroChamber provides excellent structural strength as shown in independently witnessed field tests where the chambers were exposed to loads 3.5 times greater than that expected in service.

The HydroSeal is a rotationally moulded flanged coupler designed to create a watertight seal when JFC CorriPipe™ passes through an impermeable liner (or GCL layer) commonly found in Stormwater Attenuation Systems.  The unit comprises two identical flanged couplers one of which has a pre-fabricated internal neoprene layer. It is very easy to install.   One half is placed either side of where the pipe is to pass through the impermeable membrane or GCL layer.  When bolted back to back the impermeable layer becomes sandwiched between the units offering a tight seal.  The impermeable layer is then trimmed away from the inside of the joint and a standard twinwall CorriPipe™ can be attached.