Water Supply System In Residential Projects(Imp Point)

IDENTIFICATION OF DIFFERENT TYPES OF WATER SUPPLY SYSTEM
S.NO	Name	Description	Particular	WC- Water Closet
	Plumbing System —	The plumbing system shall	Hydro Pneumetic Pump	AT- Abluction Tap
		include  the water  supply  and  distribution  pipes;	Isolation Valve	WB- Wash Basin
		plumbing fittings and traps; soil, waste, vent pipes and	Non Return valve	SH-Shower
		anti-siphonage pipes; building drains and building	Vent	GY-Geyser
		sewers including their respective connections, devices	PG- Pressure Gauge	PRV-Pressure reducing valve
		and appurtenances within the property lines of the	Y Type Strainer	PV-Pressure Valve
		premises; and water-treating or water-using equipment.	WM- Water Meter	W/M-Washing Machine
			UGT- Under Ground Tank
			OHT- Over Head Tank
	Pressure Balancing Valve	– Mixing valve that	Distribution  Systems  in Multi-Storeyed
		senses incoming hot and cold water pressures and	Buildings
		compensates for fluctuations.	There  are  following  four  basic methods  of
			distribution of water to a multi-storeyed buildings:
	Basic Principles		a) Direct supply system from mains — public or
		The design of water supply takes the following into	private.
		consideration:	b) Gravity distribution system.
		a) Number of occupants;	c) Pressurized  distribution  system  (Hydro-
		b) Minimum water requirements for different	pneumatic pumping system).
		purposes;	d) Combined distribution system.
		c) Treatment of water based on the quality of
		water;
		d) Quantity of water stored; and
		e) Sizing of pipes.
	4 Water Supply Requirements for Buildings	Residential buildings:	Water Supply for Residences
		Accommodation  Population	A minimum of 70 to 100 litre per head per day may be
		Requirements	considered adequate for domestic needs of urban
		1 bedroom dwelling unit                                                    4	communities,  apart  from  non-domestic  needs  as
		2 bedroom dwelling unit                                                    5	flushing requirements
		3 bedroom dwelling unit                                                    6	a) For communities with population up to 20 000:
		4 bedroom dwelling unit                                                    7	1) Water supply through stand: 40 lphd (Min)
		and above	post
			2) Water supply through house: 70 to 100 lphd
			service connection
			b) For communities with: 100 to 135 lphd
			population 20 000 to 100 000
			together with full flushing system
	Storage of Water	The water may be stored in overhead tanks (OHT)
		and/or underground tanks (UGT).	Each tank shall be provided with the following:
	Materials Used	Tanks made of steel may be of welded, riveted or panel/pressed construction. The metal shall be galvanized or coated externally with a good quality anti- corrosive weather-resisting paint	Manholes                                                                                Ladders — Tanks higher than 900 mm deep shall be provided with corrosion resistant ladders according to the depth to enable a person to reach the bottom of the tank.
		Materials, Fittings and Appliances	Overflow pipe — Each tank shall be provided
		Standards for Materials, Fittings and Appliances	with an overflow pipe terminating above the
		All materials, water  fittings  and  appliances  shall	ground/terrace level to act as a ‘Warning Pipe’
		conform to Part 5 ‘Building Materials’ of the Code.	Vent  pipes — Tanks larger than 5 000 litre
	Materials for Pipes	a) Cast iron, vertically cast or centrifugally	capacity shall be provided with vent pipes to
		(spun) cast;	prevent development pressure in the tank
		b) Steel (internally lined or coated with bitumen or	which might result in ‘NO FLOW’ condition
		a bituminous composition, and out-coated with	Scour  pipe —
		cement concrete or mortar, where necessary);	Rate of Flow
		c) Ductile iron, internally lined;	Plumbing Fixtures/Fittings  Maximum
		d) Reinforced concrete;	Flow Rate
		e) Prestressed concrete;	Water closets  6 litre/flush
		f) Galvanized mild steel tubes;	Urinals  3.8 litre/flush
		g) Copper;	Lavatory, metered faucet (Public)  1 litre/use
		h) Brass;	Lavatory, faucet (Private)  8 litre/min
		j) Wrought iron;	Sink, faucet  8 litre/min
		k) Stainless steel;	Bidet, hand held spray  8 litre/min
		m) Polyethylene;	Shower head  10 litre/min
		n) Unplasticized PVC;
		p) Chlorinated PVC;
		q) Polypropylene-random copolymer (PPR);
		r) Composite pipes (PE-AL-PE) or any other
		combination;
		s) Cross-linked polyethylene (PEX); or
		t) Polybutylene pipe.
	Colour Codes for Different Types	No.
	Water Pipes	Particulars  Ground	Ground Colour	First	Second
		Colour		Colour Band	Colour Band
		i)  Cooling water    —	Sea Green	French Blue
		ii)  Boiler feed water	Sea Green	Gulf Red
		iii)  Condensate water	Sea Green	Light Brown
		iv)  Drinking	Sea Green	French Blue	Signal Red
		v)  Treated	Sea Green	Light Orange
		vi)  Fire water	Fire Red	Crimson Red
		vii)  Water with central heating below 60°C	Sea Green	Canary yellow
		viii)  Water with central heating between 60 to 100°C  —	Sea Green	Dark violet
		ix)  Water with central heating above 100°C	Sea Green	Dark violet	Signal Red
		x)  Cold water from storage tanks	Sea Green	French blue	Canary Yellow
		xi)  Domestic, hot water	Sea Green	Light Grey
		xii)  Hydraulic power water	Sea Green	Black
		xiii)  Untreated sea/river water	Sea Green	White
		xiv)  Filtered water	Sea Green	Light Brown
		xv)  Soft water  Sea green	Sea Green	Light Brown	Signal Red
		xvi)  Warm water	Sea Green	Light Grey	Canary Yellow
		xvii)  Chilled water	Sea Green	Black	Canary Yellow
		xviii)  Sprinkler and hydrant water	Sea Green	White	Signal Red
		xix)  Waste water	Sea Green	Canary Yellow	Signal Red