Site handling & installation...
Pipes up to 2.0mm Dia, weigh less than 200 kgs per mtr, pipes between 2.0mtr and 3.6mtr weigh less than 400 kgs per mtr. Handling is often a question of the distance of reach and therefore we recommend that the contractor evaluate the performance of the plant before attempting lifting and placing, (we can supply you with a weight table on request). When off loading and transporting to the installation site with an excavator, two strops of sufficient strength and length to cradle the circumference of the pipe should be used; these should be placed at correct centre to balance the pipe. It is not recommended that chains and hooks be used on the pipe ends as this could pose a health and safety risk and could damage the pipe ends. All pipes are numbered in sequence in accordance with our CAD layout, it is advisable to store pipes on site in the sequence of installation, to avoid double handling. Atlantic will schedule deliveries to suit your installation programme. When installing a double manifold system it is advisable to use a laser to maintain line and level, in order for the two ends to match.
Pictured left.
Transporting a
2.5 meter
diameter twin
pipe manifold.

Flow control units for the specified discharge, can be supplied factory fitted in the Atlantic tank or supplied separately for connection into the downstream manhole. Our units are fitted with a pivoting bypass plate connected to the access shaft by a cable, operated from the surface, in the case of a blockage. We can also provide an orifice plate to the required size as an alternative.
Pumps can be supplied as an integral part of the system, housed in a CSP chamber. These are supplied complete with a commissioned M&E package which includes float sensors, cabling and telemetry, with all O&M warranties. The CSP chamber is supplied with a steel base to which the pump slide rails and pipe work are attached. We recommend that the chamber be placed on a 300mm thick concrete bed. The rising main and cable entries are placed through the chamber wall at the required location. Surface construction is similar to that of the access shaft. The cover slab should be chosen with the correct access opening.
Access shafts can be manufactured to any diameter (typically 900mm); they can be placed at the crown of the pipe at strategic locations around the tank, or offset in the case of a culvert, where the ladder does not interrupt the flow. Ladders can be supplied with hinges and chains so as to prevent potential blockage. Access shafts are constructed at the surface in a traditional detail, i.e. PCC cover slab, brick work, and D.I cover and frame. In trafficked areas we would recommend a 150mm thick surround of concrete to the access shaft to a depth of 500mm under the cover slab. Access shafts can also be supplied in the form of catchpits/silt traps to the required sump depth.
Inlet and outlet pipe connection stubs are factory fitted to required level, angle and orientation and can be produced to accept any pipe diameter and material, it is usual to provide the stub pipe with an I.D equivalent to the incoming/outgoing pipe, in order to maintain hydraulic efficiency. The connection is then made with a band seal coupling. Alternatively we can supply the inlet and outlet connections to suit the coupling of vitrified clayware pipes and the O.D. of a full range of plastic pipes to enable a sealed push fit connection, or the O.D. of PCC pipes for a mortar joint; flanged connections can also be supplied for when the upstream discharge is pumped.