United Arab Emirates
FRP Manholes liners can be produced in all shapes and sizes as well as any angle combinations of inlets and outlets for the manhole benching. Extra Co also produces both single-wall and double-wall manholes. The advantage of double-wall manholes is that they can be installed very quickly by just lowering the manhole into position and pouring concrete between the two walls to provide the counterweight for the water table uplift force (avoiding all the formwork otherwise required for the foundation of the manhole) Similarly, Collection & Inspection Chambers are produced in all shapes (circular, square, rectangular) and sizes and as per the specifications and requirements of the customer. Liner shafts can also be produced separately if required by the customer.