The fundamental principle behind the manufacture of Polycon manholes is to build a completely corrosion resistant and leak proof sewer. For abetter quality manhole construction, as muc h work as possible should be done at the manufacturing
Plant.Complicated manholes with varied pipe connections, floor configurati -on, channel bends and internal and external bottom drops are al availabl -e for our clients.
material and wall design. The bottom section of the manhole is manufactu red as a one piece unit for additional protection against leakage All types of pipes with the appropriate fittings for the respec -tive type of pipe canbe con-nected to the manhole.
Manholes of DN1000 mm can accept connections up to 500 mm,DN1200m m up to 800 mm, and DN 1500 mm up to 1000 mm. The bottom section of the manhole is simply drilled on site and the appropriate fittings are fixed in place.
Where there are large connection diameters, Polycon™ manholes are man
manufactured as pre-fabricated slabs which are assembled in the plant, re
-ady for simple jointing on-site. The step and channel of the system manh
-ole are manufactured to the precise size from seamless polymer concrete
screed on pre-formed concrete base. The smooth contoured surface is par
ticularly beneficial to the hydraulic flow. Climbing aids such as climbing iro
-s, stirrups or ladders are fastened tothe manhole wall with stainless steel
lock nuts.