METHOD STATAEMENT FOR PVC CONDUITS & ACCESSORIES INSTALLATION

Introduction And Scope

This method of statement specifies the detailed requirements and procedures for the MEP installation (PVC Conduits & Accessories Installation) of the above-mentioned project.

Methodology-PVC Conduits & Accessories Installation

1. During the installation of the conduit system, procedures for working and dressing the installation as recommended shall be employed.
2. All bends and sets shall be following IEE regulation 522-08 formed with the aid of a helical spring fitted internally, with, if necessary, the conduit warmed sufficiently for it to move without avoidable wall thinning of the outside of the bend.
3. A conduit system shall be installed to ensure compliance with the requirements of Specified Standard and Regulation.
4. Joints between PVC conduit + fittings shall be made with a suitable adhesive, but expansion couplings shall be installed where any length of conduit, inclusive of the draw-in boxes, etc., exceeds five meters in length.
5. The minimum and maximum sizes of conduit to be employed shall be 20 millimeters and 32 millimeters in diameter respectively unless otherwise stated in subsequent sections of the specification. 
6. Conduits in floors shall be routed and installed to avoid the fixings of floor standing equipment to be installed on the floor.
7. When conduits are run on shuttering, before the laying of concrete insitu, additional security must be provided near every box and at intervals of not more than 1.2 meters by binding short lengths of steel wire, of not less than 2 millimeters diameter twisted around the conduit and reinforcing steel. The conduits shall be appropriately adjusted and fixed to prevent excessive movement and deterioration/damage during the pouring and setting of concrete and shall be protected from mechanical damage. Check there is no damage before screed/concrete is poured. Unless otherwise indicated cast in conduits shall not be less than 30 millimeters. cores to plastered over conduits shall not be less than 5 millimeters.
8. Where conduits are left "open-ended" before wiring they shall be protected by caps or plugs to prevent the ingress of building material.
9. All conduit runs must be designed to permit wiring to be readily installed after the complete erection of the conduits through the available draw-in, accessory, and luminary suspension boxes.
10. Where surface-mounted equipment (other than luminaries) is specified, all concealed conduits shall be terminated and an adaptable box installed recessed into the wall at every surface-mounted equipment position.
11. Where conduits pass through an external wall/roof the conduit box shall be fitted on the side and after wiring filled with an inert, permanently plastic compound having a high insulation value.
12. Make provision in conduit and trunking, an installation where building expansion joints are crossed or settlement is likely
13. Ensure that conduit and fittings buried in concrete or behind plaster are protected against corrosion or electrolytic action before rendering.

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Method Of Statement For Pvc Conduits & Accessories Installation

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METHOD STATAEMENT FOR PVC CONDUITS & ACCESSORIES INSTALLATION