1.plumbing system in tall building
DESCRIPTION
1.Plumbing System in Tall BuildingTRANSCRIPT
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Plumbing System In tall
Building
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Water Supply System Shall manually
connected to Generator
WATER DISTRIBUTION
Gravity Tank System
Pressure Tank System
Constant Pressure System
Combined System
WATER SUPPLY
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Gravity Tank System
Zone Height (100 m)Fixtures,Equipment and Materials having
pressure limitations.
High pressure increases the operation
maintenance cost Tank SizeEvent of Power outage water would still available
One hour demand based on
peak gallons/minute demand Pump SelectionDischarge based on average gallons /hour
Demand
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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
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With PRV
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Without PRV
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Spill back
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Hot water DistributionSystem
Location of Hot Water GeneratorLow /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 preferableAir relief valve shall be provided above the header
Return Header is an ideal place for recirculationpump
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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
DRAINAGE AND VENTING
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Material
The joint used in the pipe material isprime importance
Threaded /Unthreaded Brass
Threaded Copper
Length of pipe between two anchorageshould not exceed 2.5 m
PRV should not be considered forworking pressure calculation
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Tall Building Systems and Concepts
Council on Tall Buildings and Urban
Habitat (1972)
ASCE PUBLICATION
REFERNCE
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Thanking you