Construction, Rehabilitation, Improvement of Davao Fish Port ComplexVolume III-Specifications J-5Part J-Mechanical Works ITEM 1201 - WATER PUMPING SYSTEM 1201.1 Description This Item shall consist of furnishing and installation of water pumping system, inclusive of all pipings and pipe connections, valve, controls, electrical wirings, tanks and all accessories ready for service in accordance with the approved plans and specifications. 1201.2 Material Requirements 1201.2.1 Water Pump The type, size, capacity, location, quantify and power characteristics shall be as specified or as shown on the Plans. 1201.2.2 Overhead Tank The tank shall be provided with manhole, cover, drain pipes, distribution pipe outlet, overflow pipes and air vent. Suitable float switch or electrode shall be provided in the tank to stop and start the operation of the pump. 1201.2.3 Pneumatic Tank Tank shall be designed for twice the maximum total dynamic pressure required and shall have the following accessories. a) A suitable pressure switch to stop pump if pressure required is attained. b) Air volume control device to maintain correct air volume inside the tank. c) Electrode to be connected in the motor pump control to control the water level. d) Air compressor shall be provided for tank of 3,785 liters to maintain air pressure inside the tank. 1201.2.4 Air Compressor The air compressor shall be electric motor driven with sufficient capacity. The compressor shall be V-belt driven and both motor and compressor shall have V-sheaves on the flywheels. The compressor and motor shall be mounted on a base of structural steel with anchor clips drilled to permit securing to a foundation. 1201.2.5 Pipes and Fittings All pipes and fittings shall be G.I. pipe Schedule 40. All pipings 100 mm and larger shall be welded or flanged while smaller sizes shall screwed. 1201.2.6 Valves A gate valve followed by a check valve shall be placed between discharge of pump and tank to prevent back flow of water when pump stops. 1201.2.7 Foundation Refer to sub-section 1200.2.9 –Concrete Works.
Construction, Rehabilitation, Improvement of Davao Fish Port ComplexVolume III-Specifications J-6Part J-Mechanical Works 1201.2.8 Electrical Works Refer to sub-section 1200.2.10 –Electrical Works. 1201.3 Construction Requirements Exposed pipings shall be provided with concrete saddle or steel clamps or hangers to secure them firmly to the building structures. Pipe treads shall be lubricated by white lead, red lead, Teflon or other approved lubrication before tightening. Piping support shall be placed at 3 meters interval or less. 1201.3.1 Test Appropriate test shall be done to demonstrate that the system complies with the requirements of the Plans and specifications. 1201.3.2 Guarantee and Service Refer to sub-section 1200.3.2 –Electrical Works.
You've reached the end of your free preview.
Want to read all 309 pages?
- Fall '16
- Davao Fish Port Complex