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SANITARYAND
PLUMBINGDESIGN
REQUIREMENTS
BY: 075BAR038
RAJAY BAJRACHARYA
According to National Building Code
Importanceof Water
2
1. Household purpose: drinking, bathing, washing, cleanliness,
cooking, and kitchen garden nursery etc.
2. Irrigation purpose
3. Power generation: electricity production
4. Transportation: navigation boating.
5. Recreation: swimming lawn hydrant
6. Furnishing: fire protection,
7. Air-conditioning: heating cooling
8. Sanitation: Sewage disposal, street cleaning
9. Industrial uses: dyeing, etc.
WATERSUPPLY
SOURCES
1) Well Water
Well water provides water supply to
residences For basic use, farms and small
sectors such as Schools, offices or other minor
areas.
2) Municipal Water systems
Municipal water systems that provide potable
water to a wide array of commercial property
and domestic use buildings including
apartments, condominiums, duplex housing,
and single family dwellings
WaterSupplyCoverageinNepal
WaterSupplyforRequiredBuildings
5
WaterSupplyforRequiredBuildings(Recommended)
6
Consumerconsumption:
7
• Consumer consumption is assessed by determining the amount of water that actually is used by consumers, based on
three levels of usage as follows:
• 1) Average daily consumption (ADC): Each municipal water system services a defined population as determined by
census figures.
• 2) Maximum Daily Consumption (MDC): This value represents the single day within a year-long period on which the
consumption rate was the highest.
• 3) Instantaneous flow demand: There are generally two peak periods in the day when consumption is greatest:
between 7 a.m. to 9 a.m. and between 5 p.m. to 7 p.m. The water supply superintendent, or a person of equal
responsibility, has to predict these rates in order to control the amount of water delivered to the water distribution
system and water pressure such that any given tap can supply water at the desired pressure.
• Fire flow demand: At any time, the municipal water supply system should be able to deliver needed fire flows to
representative fire risks throughout the municipality from properly located fire hydrants
Water StorageTanks
8
• Should be strong enough to take vertical load and natural pressure of water
when both full and empty.
• Should be water tight and have a manhole od dim 450mm x 450mm for access and
repairs
• Should be constructed with non-corrosive, non-toxic material
• Should have vent pipe (to prevent negative pressure when water is drawn out) ,
overflow pipe (to indicate the tank is full) and washout pipe (to empty all
water from the bottom when needed)
• Overflow pipe or vent pipe should not be directly connected to the drain gully
trap or sewer to avoid contamination. (These connections should be discharged
over properly designed drains with a minimum air gap of 75-100 mm )
• Top of the tank should be leveled to prevent any stagnation on top
• Overflow pipe and vent pipe should be covered with wire mesh of 1.5mm wire
gauge to prevent contamination of insects
9
Underground water storage tanks
Underground water storage tanks are tanks at below ground level that collects the
water from city main at the hours of supply. Later the water collected is pumped to the
overhead tank for use within the building.
Underground WaterStorageRequirements
10
• For normal building with reliable public supply, the capacity of underground tank should be 12-24 hrs.' of daily
water demand.
• Capacity of underground tank should be the net difference between the peak and the flow during the hours of
supply.
• Provisions should be made supply interruptions due to repair work or power failure.
• Should be watertight and not leak when empty or full. Also no ingress of subsoil water.
• Manhole cover should be 30 cm higher than ground level or highest flood level in the locality in order to avoid entry
of surface water from top.
• Should not be located near sewers, septic tanks, soak pits and oil tanks to avoid contamination due to seepage or
leakage. (min clearance distance is 5m.)
• Overflow pipes should also be higher than ground level to avoid the entry of surface water through overflow pipes.
• Walls and slabs should be designed to take load from building, traffic and water pressure when both empty and full.
THANKYOU
11

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Building Services Sanitation building code

  • 2. Importanceof Water 2 1. Household purpose: drinking, bathing, washing, cleanliness, cooking, and kitchen garden nursery etc. 2. Irrigation purpose 3. Power generation: electricity production 4. Transportation: navigation boating. 5. Recreation: swimming lawn hydrant 6. Furnishing: fire protection, 7. Air-conditioning: heating cooling 8. Sanitation: Sewage disposal, street cleaning 9. Industrial uses: dyeing, etc.
  • 3. WATERSUPPLY SOURCES 1) Well Water Well water provides water supply to residences For basic use, farms and small sectors such as Schools, offices or other minor areas. 2) Municipal Water systems Municipal water systems that provide potable water to a wide array of commercial property and domestic use buildings including apartments, condominiums, duplex housing, and single family dwellings
  • 7. Consumerconsumption: 7 • Consumer consumption is assessed by determining the amount of water that actually is used by consumers, based on three levels of usage as follows: • 1) Average daily consumption (ADC): Each municipal water system services a defined population as determined by census figures. • 2) Maximum Daily Consumption (MDC): This value represents the single day within a year-long period on which the consumption rate was the highest. • 3) Instantaneous flow demand: There are generally two peak periods in the day when consumption is greatest: between 7 a.m. to 9 a.m. and between 5 p.m. to 7 p.m. The water supply superintendent, or a person of equal responsibility, has to predict these rates in order to control the amount of water delivered to the water distribution system and water pressure such that any given tap can supply water at the desired pressure. • Fire flow demand: At any time, the municipal water supply system should be able to deliver needed fire flows to representative fire risks throughout the municipality from properly located fire hydrants
  • 8. Water StorageTanks 8 • Should be strong enough to take vertical load and natural pressure of water when both full and empty. • Should be water tight and have a manhole od dim 450mm x 450mm for access and repairs • Should be constructed with non-corrosive, non-toxic material • Should have vent pipe (to prevent negative pressure when water is drawn out) , overflow pipe (to indicate the tank is full) and washout pipe (to empty all water from the bottom when needed) • Overflow pipe or vent pipe should not be directly connected to the drain gully trap or sewer to avoid contamination. (These connections should be discharged over properly designed drains with a minimum air gap of 75-100 mm ) • Top of the tank should be leveled to prevent any stagnation on top • Overflow pipe and vent pipe should be covered with wire mesh of 1.5mm wire gauge to prevent contamination of insects
  • 9. 9 Underground water storage tanks Underground water storage tanks are tanks at below ground level that collects the water from city main at the hours of supply. Later the water collected is pumped to the overhead tank for use within the building.
  • 10. Underground WaterStorageRequirements 10 • For normal building with reliable public supply, the capacity of underground tank should be 12-24 hrs.' of daily water demand. • Capacity of underground tank should be the net difference between the peak and the flow during the hours of supply. • Provisions should be made supply interruptions due to repair work or power failure. • Should be watertight and not leak when empty or full. Also no ingress of subsoil water. • Manhole cover should be 30 cm higher than ground level or highest flood level in the locality in order to avoid entry of surface water from top. • Should not be located near sewers, septic tanks, soak pits and oil tanks to avoid contamination due to seepage or leakage. (min clearance distance is 5m.) • Overflow pipes should also be higher than ground level to avoid the entry of surface water through overflow pipes. • Walls and slabs should be designed to take load from building, traffic and water pressure when both empty and full.