Subhead 18.0: Water Supply

Subhead 18.0: Water Supply

This section covers the specifications for the installation and maintenance of water supply systems in buildings. It includes detailed descriptions of the materials, methods, and quality standards required for different types of water supply tasks. Here is a detailed breakdown of the content typically covered under this subhead:

18.1 General Specifications

• Scope: Installation and maintenance of water supply systems in residential, commercial, and industrial buildings.
• Materials: Specifications for materials used in water supply systems, including pipes, fittings, tanks, and pumps.
• Workmanship: Standards for workmanship to ensure durability, functionality, and leak-free installations.

18.2 Pipes and Fittings

• Materials: Types of pipes and fittings, including galvanized iron (GI), copper, PVC, CPVC, and PEX.
• Sizes: Standard sizes and dimensions for different types of pipes and fittings.
• Joining Methods: Techniques for joining pipes and fittings, such as threading, soldering, solvent cementing, and crimping.

18.3 Storage Tanks

• Types: Various types of storage tanks, including overhead tanks, underground tanks, and pressure tanks.
• Installation: Procedures for installing storage tanks, including base preparation, fixing, and connection to the water supply system.
• Accessories: Installation of related accessories such as float valves, overflow pipes, and level indicators.

18.4 Pumps

• Types: Different types of pumps, including centrifugal pumps, submersible pumps, and booster pumps.
• Installation: Procedures for installing pumps, including base preparation, fixing, and connection to the water supply system.
• Testing: Ensuring proper operation and efficiency of pumps through testing and commissioning.

18.5 Valves

• Types: Various types of valves, including gate valves, globe valves, ball valves, and check valves.
• Installation: Fixing valves in the water supply system to control flow and pressure.
• Maintenance: Regular inspection and maintenance of valves to ensure proper operation.

18.6 Water Meters

• Types: Different types of water meters, including mechanical, electromagnetic, and ultrasonic meters.
• Installation: Procedures for installing water meters, ensuring accurate measurement of water consumption.
• Reading and Maintenance: Regular reading and maintenance of water meters to ensure accuracy and functionality.

18.7 Water Supply Fixtures

• Types: Various water supply fixtures, including faucets, showerheads, and hose bibs.
• Installation: Fixing water supply fixtures to basins, sinks, and bathtubs, and connecting to the water supply system.
• Testing: Ensuring proper operation and leak-free installations through testing.

18.8 Hot Water Systems

• Types: Different types of hot water systems, including storage water heaters, instant water heaters, and solar water heaters.
• Installation: Procedures for installing hot water systems, including fixing, connection to the water supply system, and insulation.
• Safety Measures: Ensuring safety through the installation of pressure relief valves, expansion tanks, and temperature controls.

Examples:

1. Installation of a PVC Water Supply Pipe:

   • Preparation: Measure and cut the PVC pipe to the required length.
   • Joining: Apply solvent cement to the pipe and fitting, then join and hold until set.
   • Fixing: Secure the pipe using clamps or hangers, ensuring proper alignment and slope.
   • Testing: Conduct a pressure test to ensure there are no leaks.

2. Installation of an Overhead Water Tank:

   • Base Preparation: Construct a stable and level base for the tank.
   • Fixing the Tank: Place the tank on the base and secure it with straps or brackets.
   • Connecting to the System: Connect the inlet, outlet, overflow, and drain pipes to the tank.
   • Testing: Fill the tank with water and check for leaks and proper operation of the float valve.

3. Installation of a Centrifugal Pump:

   • Base Preparation: Construct a stable and level base for the pump.
   • Fixing the Pump: Mount the pump on the base and secure it with bolts.
   • Connecting to the System: Connect the suction and discharge pipes to the pump.
   • Testing: Prime the pump, start it, and check for proper operation and pressure.

Wed Apr 17, 2024