Water Requirement

6.1.1

Phase - I S.No. Description 01 Water requirement @ 115 Lit / day & 5 persons / unit for 1176 units (21 towers) 02 Water requirement @ 115 Lit / day & 5 persons / plot for 70 plots 03 Club house (@15Lit/day for population 300) Total

6.1.2

Summary of water requirement S. Description Domestic Flushing N. water water Req. Req. (70LPD) (45LPD) 01 Phase - I 439100 281850

Total Water Req. (LPD) 720950

02

6.1.4

40250 4500 720950

Phase – II (Future) S.No. Description 01 Water requirement @ 115 Lit / day & 5 persons / unit for 2856 units (51 towers) 02 Water requirement @ 115 Lit / day & 5 persons / plot for 52 plots 03 Club house (@15Lit/day for population 300) Total

6.1.3

Litres / Day 676200

%age Flow to Sewer 80

Litres / Day 1642200 29900 4500 1676600 Collection at STP (LPD) 576760

Phase -II 1020800 655800 1676600 80 1341280 Sub total 1459900 2397550 03 UFW@15% 218985 Total 1678885 OHT (1/3rd 559630 of sub total) Net water 1119255 Req. (at UGT) Say 1150 KL The waste generated in phase-I and phase-II is directed to STP-1 and STP-2 respectively. It is anticipated that water generation after recycling shall be to the tune of 80% of total sewage generation. Net Recycled water generation Phase – I : Phase – II :

6,00,000 LPD 13,50,000 LPD

SLUICE GATES 1.

Design requirement a) Sluice gates shall conform to IS:13349 b) Sluice gates shall be designed for specified seating and unseating pressure. Spindle shall be rising spindle.

2.

Features of construction:a)

The frame of gate shall be of flange back type, to be mounted on puddle pipe flange, provided dimensions and hole drilling on the flange of gates are specifically provided to match pipe flange.

b) The gates shall be provided with electric actulator synchorpack type with starter, suitable for PLC based automation application. Actuator should be of Rotork/Auma/Emotork male. Actuator should be weather proof and suitable for outdoor installation. 3.

Material of construction: Wall thimble Frame guide and side Seating faces Wedge blocks Stem Thrust Nut Fasteners

: : : : : : :

CI to IS:210, Gr.Fg.200 CI to IS:210, Gr. Fg.200 LTB2 as per IS:318 LTB2 as per IS:318 SS AISI:410/431 LTB2 as per IS:318 C.S. Electrogalvanised

SHOP TESTING WITNESSED: All the sluice gates shall be tested as follows:Seat clearance check: Before final assembly, seating and wedging surfaces shall be cleaned through of all foreign materials and final adjustment made. With the gate fully closed the clearance between seating faces shall be checked with 0.1 mm. thickness gauge. If the thickness gauge can be inserted between seating faces, then wedging devices must be readjusted for the gate slide or gate frame or both re-machined until insertion is no longer position. In the event of remaching, clearance shall be checked again as stated above. Movement Test After completion of assembly each sluice gate shall be shop operated three times from the fully open to the fully closed position and return to the fully open under no flow condition to demonstrate that the assembly is workable. The torque required on each sluice gate shall also be ascertained. Hydrostatic and leakage test 1) With the sluice gate in the closed position the unseating pressure stated shall be applied from the unseating side for a period of 5 minutes and leakage shall not exceed the maximum leakage permissible as per IS:13349. 2) Finally a differential of one and half times the seating pressure stated shall be applied to unseating side of the sluice gate. Under this test there shall be no leakage through the metal nor shall any part be permanently deformed. Size of gates Qty Seating head Unseating head

-

1200x1200 mm 1 No. 4.5 m 1.5 m

Storm water pump Vertical pump with mix flow or axial flow impeller capable to handle flood water complete in all respect with suction bell mouth, column and shaft assembly, discharge head, motor floor plate, thrust bearing to take thrust bearing to take thrust load of the pup. Pump to be driven by vertical solid shaft motor, operating on 415 volt, 3 phase, 50C/s column and shaft assembly will be self water lubricated. Discharge head of the pump will be above the floor level. Material of construction Casting Impeller Shaft Column pipe Pump capacity Head ……. Motor rating

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1.5% to 2% NICI SS CF8 SS AISI:316 MS: 2026, minimum thickness 10 mm 1500M3/H 10 mtr. 80% without – xe tolerance 15% over duty pointed out 10% over entire range.

Characteristic curve of pump and motor to be submitted by supplier. Motor Vertical solid shaft…………., electric motor in TEFC enclosure “F” class insulation with temperature rise limited to Class “B” insulation suitable for operation on 415+ 10% volt, 3 phase, 50 cycle, AC supply and conform to IS 325:/1978. Electric Panel: Panel should have independent incoming feeder suitable for 3 no. main pumps,……………. Other ……………load and having independent outgoing feeder for 3 main pumps………………. Etc. Incoming feeder should be draw out electrically operated ACBS and 3 nos. pump of electrically……………of suitable rating. …………………. And other load have MCCB/MCB. Electrical panel should be designed in such a way that initially one pump will start automatically when water level reaches at predetermined level, 2nd pump and 3rd pumps also starts automatically one by one as predetermined level and stop reversely at the same day. Further panel should have all protection devices for automatic operation of …………….. for sluice gates, pumps etc., complete with starter, power capacitor, single protection devices, overload / earth fault protection etc. Minimum acceptable efficiency of the pump should not be less than 80% at duty point without negative tolerance. Motor should have atleast 15% power margin on duty point and 10% margin on the entire working range. 1 L of 2 Nos. 1000 m dia HFL Aug level of Nalla Top of platform

1.5 4.0 1.4 4.5 1.3M3/sec

Head Pump 1.0 L of …………… Size of pump ………….. Delivery Head HP

0.5 M 450 450 dia 400 dia 10M 45x3600x10 .93x1x367.2x.8 = 55

KW HP

57.1 57.1 .746 = 76 • •

Add 15% to cover voltage fluctuation and reducing of efficiency. Adopt 100 HP in the manufacturing range.