1.Plumbing System in Tall Building
Content
Plumbing System In tall Building
WATER SUPPLY
Water Supply System Shall manually connected to Generator
WATER DISTRIBUTION – – – –
Gravity Tank System Pressure Tank System Constant Pressure System Combined System
Gravity Tank System
Zone Height (100 m) Fixtures,Equipment and Materials having
pressure limitations. High pressure increases the operation maintenance cost
Tank Size Event of Power outage water would still available One hour demand based on
peak gallons/minute demand
Pump Selection Discharge based on average gallons /hour
Demand
Gravity Tank System
Drinking water fountain should be installed in each floor
Types – Gravity Tank System with Pressure Reducing valve
– Gravity Tank System without Pressure Reducing valve
It is ideal arrangement for tall building but expensive
– Spillback System
With PRV
Without PRV
Spill back
Hot water Distribution System
Location of Hot Water Generator Low /High point zone Low point of zone reduce operation cost High point of zone reduce the initial cost Below the Pump/Tank
Distribution Down Supply System is preferable Air relief valve shall be provided above the header
Return Header is an ideal place for recirculation
pump
DRAINAGE AND VENTING
PROBLEMS – Spurting Fountain – Loss of Trap Seal
REMEDDY – Roof Drain water shall be used for HVAC purpose – Relief vent shall be provided at 10 floor interval – Lower floor drains has to be connected below the offset
– Drain shall design for 1/3 rd full
Material
The joint used in the pipe material is prime importance – Threaded /Unthreaded Brass – Threaded Copper
Length of pipe between two anchorage should not exceed 2.5 m PRV should not be considered for working pressure calculation
REFERNCE
Tall Building Systems and Concepts Council on Tall Buildings and Urban Habitat (1972) ASCE PUBLICATION
Th an k i n g y o u
WATER SUPPLY
Water Supply System Shall manually connected to Generator
WATER DISTRIBUTION – – – –
Gravity Tank System Pressure Tank System Constant Pressure System Combined System
Gravity Tank System
Zone Height (100 m) Fixtures,Equipment and Materials having
pressure limitations. High pressure increases the operation maintenance cost
Tank Size Event of Power outage water would still available One hour demand based on
peak gallons/minute demand
Pump Selection Discharge based on average gallons /hour
Demand
Gravity Tank System
Drinking water fountain should be installed in each floor
Types – Gravity Tank System with Pressure Reducing valve
– Gravity Tank System without Pressure Reducing valve
It is ideal arrangement for tall building but expensive
– Spillback System
With PRV
Without PRV
Spill back
Hot water Distribution System
Location of Hot Water Generator Low /High point zone Low point of zone reduce operation cost High point of zone reduce the initial cost Below the Pump/Tank
Distribution Down Supply System is preferable Air relief valve shall be provided above the header
Return Header is an ideal place for recirculation
pump
DRAINAGE AND VENTING
PROBLEMS – Spurting Fountain – Loss of Trap Seal
REMEDDY – Roof Drain water shall be used for HVAC purpose – Relief vent shall be provided at 10 floor interval – Lower floor drains has to be connected below the offset
– Drain shall design for 1/3 rd full
Material
The joint used in the pipe material is prime importance – Threaded /Unthreaded Brass – Threaded Copper
Length of pipe between two anchorage should not exceed 2.5 m PRV should not be considered for working pressure calculation
REFERNCE
Tall Building Systems and Concepts Council on Tall Buildings and Urban Habitat (1972) ASCE PUBLICATION
Th an k i n g y o u
