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India; Rainwater Harvesting in Urban Areas.- RainwasterClub

The document discusses changes in the annual budget for a city from 1994 to 2018, noting increases nearly every year with the largest being from 1994 to 1995 and decreases only in a few years. Spending increased most for public works, public safety, and community development. The budget has grown substantially over the 24 year period but some years saw decreases or flat funding depending on economic conditions.

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$ . 1 -( 1( ' ( 4<5 7 ' 1 $ 7 1 *?? % +; ??? 8? ) '$ 7' & 0< = 7 1 RAINWATER HARVESTING 3 $ E • . ' • < "( % . % $ • $ 4D ' " ( ' ( 1 " ;C • 7 # A % 1 '' " • D ( 1 4 L & " " '
• )**- ( ' 1 )* A " 1 % ?& )** 1 % " 1 )** 1 ( ' %1 " • " % ;*** %? & *** 1 % • D 7 1! 1 9! 1 A '1 • $ % -( % " ' :$ 1 • )** ' 7< !)M • 7< 1 ;*** ' ?C+)M- • 1 " ' 7 ( - % (( ' I - %( 1 • <. 1 1 " '1 7 ' • . 1 ( ' . '( . • ' :$<<4 ' ' ( % . (( • ' '.' & ( " & ' ' • ' ( ' ( ' " % . % • ( Year No of days Amount of Volume of Volume of rain Overflow for with rainfall rainfall (mm) rainfall on collected in a recharge 50sq m roof 500lt tank 1992 77 870.3 43515 22695 20820 1993 82 1176.2 58830 23725 35105 1994 95 731.5 36575 21395 15180 1995 81 657.5 32865 20750 12115 1996 96 887 44350 25235 19115 1997 93 1196 59810 23425 36385 1998 84 1135 57515 23425 34090 1999 82 1004.3 50215 24395 25870 2000 96 1092.2 54610 26625 27985 2001 87 1116.4 55820 24955 30865
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K ; 1.00 PHE Services 1.10 Scope of work External and internal water supply External and internal drainage Rainwater,its collection and disposal Stormwater,its collection and disposal Swimming pool water requirements Landscape water requirements 1.20 Design Calculations Type of building: Corporate 1.21 Water Requirement of all Blocks: Population details for all Blocks: Expected population in CFC Block 100 persons Expected population in Process Block(in 3 shifts) 860 persons Expected floating population 50 persons Maintenace staff 25 persons Total population for all Blocks---(A) 1035 persons 1.22 Water consumption requirement for all Blocks: For all Blocks: As per National Building Code(NBC) the water consumption for offices is taken as 45 lpcd Total population of process block in 3 shifts 2580 persons Taking 33.3% diversity on total population of process block, Total population of process block in 3 shifts 1720 persons For Process Block (1720 persons+25 persons for maintenance) 78525 lits. For CFC Blocks (100 persons+50persons floating population) 6750 lits. For cafeteria needs (2000persons @ 5 lits. per day) 10000 lits. Total quantity of treated water required 95275 lits. Additional quantity of raw water required to produce the required 1.15 x quantity of quantity of treated water for residential block population treated water required Therefore quantity of raw water required to produce required quantity of treated water for total population 109566.25 lpcd Total raw water requirement for all Blocks,in lits.(say)---(B) 109600.00 lits. 1.23 Water consumption requirement for car wash: Since no car wash is expected to happen this requirement is not taken into account Total water requirement for car wash in lits.---(C) 0.00 lits. 1.24 Water consumption requirement for landscaping: 2 Total area available for landscaping 12500 m 2 Assuming 7lits. of water will be required per m , Total quantity of water required for landscaping---(D) 87500.00 lts.
1.25 Water available from STP and its use: Total quantity of water required for landscaping as per clause 1.24 87,500.00 lts. 3 Water available from STP (90% of domestic water) 98,640.00 m Surplus quantity of water available ---(E) 11140.00 lts. 1.26 Water consumption requirement for mirror pool: 2 Total area available for the mirror pool 920.00 m Total depth of mirror pool 0.6 m 3 Quantity of water required for pool 552.00 m 3/ Flow through filter at 8 hour operation 69.00 m hr. 3 Backwash water required @ 5% 3.45 m 2 Evaporation losses @ 12 lits./m 11040.00 lits. 2 3 Evaporation losses @ 12 lits./m 11.04 m 3 Total qty. of water required for backwash and for evaporation losses 14.49 m Total quantity of water for mirror pool requirements---(F) 14490.00 lts. 1.27 Water consumption requirement for firefighting: As per NBC the capacity of u/g raw water sump for business buildings upto 15m in height shall be 93,000.00 lits. Therefore, Total water requirement for firefighting in lits.---(G) lits. 93,000.00 1.28 Summary: Total water requirement for all Blocks---(B) 109600.00 lits. Total water requirement for car wash in lits.---(C) 0.00 lits. Total quantity of water required for landscaping---(D) 87500.00 lts. Total quantity of water for swimming pool requirements---(E) 14490.00 lts. Total water requirement for firefighting in lits.---(F) 93000.00 lts. Total raw water required,in lits. shall be (say) lts. 124,100.00 1.30 Recommended storage capacities: a) Raw Water Sump: For Domestic use Total raw water requirement as per clause 1.28 124100.00 lits. No. of days assumed for water storage requirement, 1.5 day Total qty. of water required 186150.00 lits. Hence,recommended net raw water sump capacity 186,150.00 lits. b) Treated Water Sump: For Domestic use Total treated water requirement as per clause 1.22 95275.00 lits. No. of days assumed for water storage requirement, 1.5 day Total qty. of water required 142912.50 lits. Hence,recommended net treated water sump capacity lits.
142,950.00 c) Firefighting Sump: Total water requirement as per clause 1.27 for firefighting 93,000.00 lits. Hence,recommended net fire water sump capacity lits. 93,000.00 Overhead Water Tanks: a) Overhead Water Tank for Process Block: Total water demand in Process Block 78525 lits. No. of days assumed for treated water storage requirementin OHT, 0.5 day Recommended net overhead water tank capacity in Process lits. Block 39,300.00 b) Overhead Water Tank in CFC Block: Total water demand in CFC Block 6750 lits. No. of days assumed for treated water storage requirementin OHT, 0.5 day Hence,recommended net overhead water tank lits. capacity in CFC Block 3,400.00 c) Overhead Water Tank in Cafeteria Block: Total water demand in Cafetria Block 10000 lits. No. of days assumed for treated water storage requirementin OHT, 0.5 day Hence,recommended net overhead water tank lits. capacity in Cafeteria Block 5,000.00 d) Overhead Fire Water Tank in Process,CFC and Cafeteria Blocks: As per NBC the capacity of OHT shall be 2500 lits. Hence,recommended net overhead fire water tank capacity in Process,CFC and Cafeteria Blocks shall 2,500.00 lits. be 1.40 Design Brief Abstract Recommendations: Recommended raw water sump capacity for all Blocks , (net) lits. 186,150.00 Recommended treated water sump capacity for all Blocks , lits. (net) 142,950.00 Recommended net fire water sump capacity lits. 93,000.00 Recommended overhead water tank capacity in Process lits. Block,(net) 39,300.00 Recommended overhead water tank capacity in CFC lits. Block,(net) 3,400.00 Recommended overhead water tank capacity in Cafeteria lits. Block,(net) 5,000.00 Recommended net overhead fire water tank capacity in lits. Process,CFC and Cafeteria Blocks shall be 2,500.00 Assumed water distribution system Gravity system
Exclusions: Any work not specifically covered in the preceding pages Special Comments: All capacities mentioned above are "nett" ,add 0.3m to the depth of the tank for 1 freeboard depth. Water treatment has been considered,hence provision for treated water sump has to be 2 made by the Architect. It has been assumed that the air conditioning system likely to be adopted for the project 3 will not have any water requirements.Hence,no water requirement for airconditioning system has been taken into account. Architect to convert above recommended storage capacities to sizes as 4 appropriate.Pump room to be located in such a way so as to enable positive suction(as discussed and explained in design meeting)

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India; Rainwater Harvesting in Urban Areas.- RainwasterClub

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  • 30.
    $ . 1 -( 1( ' ( 4<5 7 ' 1 $ 7 1 *?? % +; ??? 8? ) '$ 7' & 0< = 7 1 RAINWATER HARVESTING 3 $ E • . ' • < "( % . % $ • $ 4D ' " ( ' ( 1 " ;C • 7 # A % 1 '' " • D ( 1 4 L & " " '
  • 31.
    • )**- ( ' 1 )* A " 1 % ?& )** 1 % " 1 )** 1 ( ' %1 " • " % ;*** %? & *** 1 % • D 7 1! 1 9! 1 A '1 • $ % -( % " ' :$ 1 • )** ' 7< !)M • 7< 1 ;*** ' ?C+)M- • 1 " ' 7 ( - % (( ' I - %( 1 • <. 1 1 " '1 7 ' • . 1 ( ' . '( . • ' :$<<4 ' ' ( % . (( • ' '.' & ( " & ' ' • ' ( ' ( ' " % . % • ( Year No of days Amount of Volume of Volume of rain Overflow for with rainfall rainfall (mm) rainfall on collected in a recharge 50sq m roof 500lt tank 1992 77 870.3 43515 22695 20820 1993 82 1176.2 58830 23725 35105 1994 95 731.5 36575 21395 15180 1995 81 657.5 32865 20750 12115 1996 96 887 44350 25235 19115 1997 93 1196 59810 23425 36385 1998 84 1135 57515 23425 34090 1999 82 1004.3 50215 24395 25870 2000 96 1092.2 54610 26625 27985 2001 87 1116.4 55820 24955 30865
  • 32.
    7 6 % B % 1 % # % 1 % " 7 $ .
  • 33.
    K ; 1.00 PHE Services 1.10 Scope of work External and internal water supply External and internal drainage Rainwater,its collection and disposal Stormwater,its collection and disposal Swimming pool water requirements Landscape water requirements 1.20 Design Calculations Type of building: Corporate 1.21 Water Requirement of all Blocks: Population details for all Blocks: Expected population in CFC Block 100 persons Expected population in Process Block(in 3 shifts) 860 persons Expected floating population 50 persons Maintenace staff 25 persons Total population for all Blocks---(A) 1035 persons 1.22 Water consumption requirement for all Blocks: For all Blocks: As per National Building Code(NBC) the water consumption for offices is taken as 45 lpcd Total population of process block in 3 shifts 2580 persons Taking 33.3% diversity on total population of process block, Total population of process block in 3 shifts 1720 persons For Process Block (1720 persons+25 persons for maintenance) 78525 lits. For CFC Blocks (100 persons+50persons floating population) 6750 lits. For cafeteria needs (2000persons @ 5 lits. per day) 10000 lits. Total quantity of treated water required 95275 lits. Additional quantity of raw water required to produce the required 1.15 x quantity of quantity of treated water for residential block population treated water required Therefore quantity of raw water required to produce required quantity of treated water for total population 109566.25 lpcd Total raw water requirement for all Blocks,in lits.(say)---(B) 109600.00 lits. 1.23 Water consumption requirement for car wash: Since no car wash is expected to happen this requirement is not taken into account Total water requirement for car wash in lits.---(C) 0.00 lits. 1.24 Water consumption requirement for landscaping: 2 Total area available for landscaping 12500 m 2 Assuming 7lits. of water will be required per m , Total quantity of water required for landscaping---(D) 87500.00 lts.
  • 34.
    1.25 Water available from STP and its use: Total quantity of water required for landscaping as per clause 1.24 87,500.00 lts. 3 Water available from STP (90% of domestic water) 98,640.00 m Surplus quantity of water available ---(E) 11140.00 lts. 1.26 Water consumption requirement for mirror pool: 2 Total area available for the mirror pool 920.00 m Total depth of mirror pool 0.6 m 3 Quantity of water required for pool 552.00 m 3/ Flow through filter at 8 hour operation 69.00 m hr. 3 Backwash water required @ 5% 3.45 m 2 Evaporation losses @ 12 lits./m 11040.00 lits. 2 3 Evaporation losses @ 12 lits./m 11.04 m 3 Total qty. of water required for backwash and for evaporation losses 14.49 m Total quantity of water for mirror pool requirements---(F) 14490.00 lts. 1.27 Water consumption requirement for firefighting: As per NBC the capacity of u/g raw water sump for business buildings upto 15m in height shall be 93,000.00 lits. Therefore, Total water requirement for firefighting in lits.---(G) lits. 93,000.00 1.28 Summary: Total water requirement for all Blocks---(B) 109600.00 lits. Total water requirement for car wash in lits.---(C) 0.00 lits. Total quantity of water required for landscaping---(D) 87500.00 lts. Total quantity of water for swimming pool requirements---(E) 14490.00 lts. Total water requirement for firefighting in lits.---(F) 93000.00 lts. Total raw water required,in lits. shall be (say) lts. 124,100.00 1.30 Recommended storage capacities: a) Raw Water Sump: For Domestic use Total raw water requirement as per clause 1.28 124100.00 lits. No. of days assumed for water storage requirement, 1.5 day Total qty. of water required 186150.00 lits. Hence,recommended net raw water sump capacity 186,150.00 lits. b) Treated Water Sump: For Domestic use Total treated water requirement as per clause 1.22 95275.00 lits. No. of days assumed for water storage requirement, 1.5 day Total qty. of water required 142912.50 lits. Hence,recommended net treated water sump capacity lits.
  • 35.
    142,950.00 c) Firefighting Sump: Total water requirement as per clause 1.27 for firefighting 93,000.00 lits. Hence,recommended net fire water sump capacity lits. 93,000.00 Overhead Water Tanks: a) Overhead Water Tank for Process Block: Total water demand in Process Block 78525 lits. No. of days assumed for treated water storage requirementin OHT, 0.5 day Recommended net overhead water tank capacity in Process lits. Block 39,300.00 b) Overhead Water Tank in CFC Block: Total water demand in CFC Block 6750 lits. No. of days assumed for treated water storage requirementin OHT, 0.5 day Hence,recommended net overhead water tank lits. capacity in CFC Block 3,400.00 c) Overhead Water Tank in Cafeteria Block: Total water demand in Cafetria Block 10000 lits. No. of days assumed for treated water storage requirementin OHT, 0.5 day Hence,recommended net overhead water tank lits. capacity in Cafeteria Block 5,000.00 d) Overhead Fire Water Tank in Process,CFC and Cafeteria Blocks: As per NBC the capacity of OHT shall be 2500 lits. Hence,recommended net overhead fire water tank capacity in Process,CFC and Cafeteria Blocks shall 2,500.00 lits. be 1.40 Design Brief Abstract Recommendations: Recommended raw water sump capacity for all Blocks , (net) lits. 186,150.00 Recommended treated water sump capacity for all Blocks , lits. (net) 142,950.00 Recommended net fire water sump capacity lits. 93,000.00 Recommended overhead water tank capacity in Process lits. Block,(net) 39,300.00 Recommended overhead water tank capacity in CFC lits. Block,(net) 3,400.00 Recommended overhead water tank capacity in Cafeteria lits. Block,(net) 5,000.00 Recommended net overhead fire water tank capacity in lits. Process,CFC and Cafeteria Blocks shall be 2,500.00 Assumed water distribution system Gravity system
  • 36.
    Exclusions: Any work not specifically covered in the preceding pages Special Comments: All capacities mentioned above are "nett" ,add 0.3m to the depth of the tank for 1 freeboard depth. Water treatment has been considered,hence provision for treated water sump has to be 2 made by the Architect. It has been assumed that the air conditioning system likely to be adopted for the project 3 will not have any water requirements.Hence,no water requirement for airconditioning system has been taken into account. Architect to convert above recommended storage capacities to sizes as 4 appropriate.Pump room to be located in such a way so as to enable positive suction(as discussed and explained in design meeting)