PRECAST CONCRETE PIPES

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PRECAST PIPE ANIMATION

FP McCann is a leading manufacturer in the supply and delivery of standard precast concrete pipes, junctions and bends to projects and merchants throughout the UK.

Concrete is much more durable than any other kind of pipe. Hence, it can carry more load at any given time and gains strength over time. It cannot be weakened by heat, moisture, mould or pests, nor will it rust. Underground concrete pipes have the ability to resist chemical attacks and massive impacts such as jetting, so blockages can be cleared easily.

FP McCann has also recently manufactured the UK’s first cement-free precast manhole rings and pipes using Earth Friendly Concrete (EFC).

Concrete Pipe Range

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FastFit Junctions Pipe Specification Table

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Notes

All dimensions are in mm.

Weights in kg are based on a concrete density of 2500kg/m³.
Where relevant, precast concrete pipes are manufactured in accordance with BS EN 1916.
Normal practice is to determine left or right branch laterals to the mainline by looking up the flow i.e from the socket end.
Right hand or left-hand junctions (viewed socket to spigot) should be specified when ordering reduced junctions in pipe diameters DN1350 and above.
Lifting chains are not suitable for joining purposes in pipes of diameter DN2400. This is joint in the traditional method.
Do not install vertical junctions.
In-wall pipes do not require lubrication.

Pipe Lifting System

To lift the pipes, select the two short legs A and B on the chainset. Place the spherical coupling over the cast-in anchor and engage by turning the tail of the head link down to the concrete. The pipe can then be lifted as normal.

Never pass slings or other lifting appliances through the barrel and never lift more than one pipe at a time.

Jointing

Ensure pipe sockets and spigots are not damaged. Ensure that integral seals are not damaged and apply the approved lubricant. For pipes without an integral seal, ensure the seal is of the correct size and is not damaged. Position the rubber ring on the end of the spigot. Under no circumstances use lubricants when using seals of this type, as they are pre-lubricated internally.

Ensure each pipe to be laid is aligned with the laid pipeline and is fully supported along its length. The recommended method of joining pipes is shown below.

To joint, the pipe using the chain system, attach the long leg A and the short leg B to the already laid pipe C. Take up the shack in the chains with the lifting pulley over the anchor of the laid pipe and increase the upward force to join the pipes. When jointed, ensure that there is no excessive slew or misalignment, this can easily be checked by reference to the joint gap.