Proposed Group Housing Project “Raheja Vanya” Village Gopalpur & Dhankot, Sector-99 A, District Gurgaon Haryana CONCEPTUAL PLAN
CONCEPTUAL PLAN INTRODUCTION The project is a Group Housing Colony to be developed by M/s Raheja Developers Ltd. The site is located in the revenue estate of village Gopalpur and Dhankot, Sector 99A, Gurgaon Manesar Urban Complex, Haryana. M/s Raheja Developers Ltd. are successful in providing specifically designed housing solutions to the elite professional keeping in mind their daily needs and their exquisite taste in lifestyle. The total plot area is 50,530.75 m2. The project is based on following objectives:
To provide modern residential and recreational facilities. To enhance the surrounding with greenery, landscaping and recommended aesthetics. To adopt the practice of plantation and rain water harvesting to create a better micro climate in the area. To recharge Ground Water by proposing Rainwater Harvesting System. SITE LOCATION AND SURROUNDINGS The Group Housing Colony is located in the revenue estate of village Gopalpur and Dhankot, Sector 99A, Gurgaon Manesar Urban Complex, Haryana. The Co-ordinates of the project site are 28°27'25.93"N and 76°57'1.61"E. Google image & toposheet showing project site & surroundings within 500 m and 10/15 km are attached as Annexure 1 & 2. CONNECTIVITY The project site is well connected through Gurgaon Farukh Nagar Road which is 1.64 km to the project site. The nearest highway is NH-8 which is 6.14 km away from project site in SE direction. The nearest railway station being Garhi Harsaru Railway Station, about 2.91 km away from the project site in SW direction. The nearest airport is Indira Gandhi International Airport, at 19.76 km from the project site in NE direction. AREA STATEMENT The total area of project is estimated 50,530.75 m2 (or 12.486 acres). The detailed area statement is given below in Table 1.
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Proposed Group Housing Project “Raheja Vanya” Village Gopalpur & Dhankot, Sector-99 A, District Gurgaon Haryana CONCEPTUAL PLAN
Table 1: Area Statement
S. No. DESCRIPTION AREA (m2)
1. Plot Area 50,530.75 2. Permissible Ground Coverage (@35%) 17,685.7625 Proposed Ground Coverage (@25%) 12,632.6875
3. Permissible Convenient Shopping Area 252.523 Proposed Convenient Shopping Area 251.523 Permissible FAR (as per HUDA bye laws) 88,428.81 Permissible FAR (as per GRIHA rating) 27634.00 4. Permissible FAR (as per TDR) 22107.20 Total Permissible FAR 138170.01 Proposed FAR 88,420.8125
5. Proposed FAR as per TDR 12,640.6875 Proposed FAR as per the GRIHA rating 25,266.9375 Total Proposed FAR 126328.4375 6. Basement area 60,550 7. Area Under Balcony and Services 30,320.325 8. Area under School 448.47 9. Machine and Mumty room area 242.41 10. Total Built-up Area 2,17,889.6425 11. Total Green Area (@ 30%) 15,159.225 12. Height of the Building 150 m
BUILT-UP AREA DETAILS
Table 2: Built up area details S. No. Particulars Area (m2) 1. Proposed FAR 1,01,061.5 2. Proposed FAR as per GRIHA rating 25,266.9375 3. Area under basement parking 60,550 4. Area Under Balcony and Services 30,320.325 5. Area under School 448.47 6. Area under Machine and Mumty 242.41
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Proposed Group Housing Project “Raheja Vanya” Village Gopalpur & Dhankot, Sector-99 A, District Gurgaon Haryana CONCEPTUAL PLAN
TOTAL BUILT-UP AREA 2,17,889.6425
POPULATION DENSITY
Total Population of Group Housing Colony project (fixed + floating) is envisaged to be 5161 persons. The Fixed (residential) population is estimated to be 4809 persons (including EWS population, servant unit). Floating population is 240 persons. Total Number of Main dwelling units for project is 865, whereas the total number of servant units are 87 and 155 units will be allotted for the EWS. The detailed population breakup is given below in the following Table 3. Table 3: Population Break-up
S. No. Unit Type No of Flats PPU Total Population 1. Total no of Dwelling units 865 5 4325 2. EWS 155 2 310 3. Servant Quarters 87 2 174 Total Residential Population 4809 4. Visitors (5% of residential population) 240 5. Nursery School 448.47 m2 @ 1person/4 112 m2 Total Population 5161
WATER REQUIREMENT
During operation phase, the source of water supply will be HUDA. The total water requirement is approx. 749 KLD, out of which domestic water is 658 KLD. Fresh water requirement is approx. 439 KLD which is 66.66% of the domestic water demand for total population. The daily water requirement calculation is given below in Table 4: Table 4: Calculations for Daily Water Demand Total Water Area S. No. Description 2 Total Rate of water Requirement (m ) Occupancy demand (lpcd) (KLD) 1.) Domestic Water a Dwelling Units 4325 135 583.875
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Proposed Group Housing Project “Raheja Vanya” Village Gopalpur & Dhankot, Sector-99 A, District Gurgaon Haryana CONCEPTUAL PLAN
b EWS 310 135 41.85 c Servant Quarters 174 135 23.49 Visitors (5% of d 240 15 3.6 residential population) e Nursery School 112 45 5.04 Total Domestic Water Demand 658 KLD
15,159.225 2.) Horticulture 6 l/sq.m 91 m2
Grand Total (1+2) = 749 KLD
Table 5: Sullage Calculations Domestic Water Requirement 658 KLD Fresh water (@ 66.66% of domestic) 439 KLD Flushing water (@ 33.33% of domestic) 219 KLD Sullage Generated 351+219 = 570 KLD (@ 80% fresh + 100% Flushing) STP Capacity 700 KLD
The water balance diagram is shown below in figure 1:
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Proposed Group Housing Project “Raheja Vanya” Village Gopalpur & Dhankot, Sector-99 A, District Gurgaon Haryana CONCEPTUAL PLAN
FRESH WATER @ 80% SULLAGE GENERATED (439 KLD) (570 KLD) (66.66% of Domestic water) STP CAPACITY 700 KLD @ 100%
FLUSHING 219 KLD (219 KLD) (33.33% of Domestic water)
HORTICULTURE 91 KLD (91 KLD) 75% of 570 = 427 KLD
Nearby Construction 117 KLD activities/Discharged to External Sewer (117 KLD)
Sullage
Treated effluent Figure 1: Water Balance Diagram
Sullage Generation & Treatment
It is expected that the project will generate approx 570 KLD of sullage. The sullage will be treated in the STP provided within the complex generating 427 KLD of treated effluent which will be recycled within the premises for reuse in flushing and horticulture. Surplus treated effluent will be used for nearby construction activities/discharged to the external sewer.
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Proposed Group Housing Project “Raheja Vanya” Village Gopalpur & Dhankot, Sector-99 A, District Gurgaon Haryana CONCEPTUAL PLAN
SEWAGE TREATMENT TECHNOLOGY
MBBR TECHNOLOGY Sewerage System An external sewage network shall collect the sewage from all units, and flow by gravity to the sewage treatment plant. Following are the benefits of providing the Sewage Treatment Plant in the present circumstances: The process has long retention time and can absorb shock load situation. Reduced net daily water requirements, source for Flushing and Horticultural purposes by utilization of the treated wastewater. Reduced dependence on the public utilities for water supply and sewerage systems. The process produces a well-oxidized sludge in small quantities only, which can be removed and used as manure. a. Wastewater Details: (a) Daily load : 570 KLD (b) Duration of flow to STP : 24 hours (c) Temperature : Maximum 32oC (d) pH : 6.5-8.5 (e) Colour : Mild (f) T.S.S. (mg/l) : 250-400 mg/l
(g) BOD5 (mg/l) : 300-400 mg/l (h) COD (mg/l) : 600-700 mg/l b. Treated effluent: (a) pH : 6.0 to 8.5 (b) B.O.D. : <10 mg/l (c) C.O.D. : <30 mg/l (d) Total Suspended Solids : <20mg/l c. Treated effluent after UF (Optional):
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Proposed Group Housing Project “Raheja Vanya” Village Gopalpur & Dhankot, Sector-99 A, District Gurgaon Haryana CONCEPTUAL PLAN
(a) pH : 6.0 to 8.5 (b) B.O.D. : <2 mg/l (c) C.O.D. : <10 mg/l (d) Total Suspended Solids : <5 mg/l d. Treatment Technology:
MBBR TECHNOLOGY Moving bed biofilm reactor technology is based on the principle of attached growth process. Raw sewage will be collected under gravity into the equalization tank after allowing to pass through the bar screen. Screens will be provided in screen chambers and it will be manually cleaned by going down to a platform. The bar screen, by removing coarse solids from the sewage help in protecting the raw sewage pump. The raw sewage equalization tank, through temporarily holding the incoming sewage facilitates both pumping of sewage through the STP and dampening the flow variation in the received sewage. sewage handling pump will be provided in the collection cum equalization tank to pump the collected waste water to the next MBBR tanks. Air will be introduced in this tank to prevent any potential foul smell problem & to provide the mixing of wastewater to avoid the sedimentation of solids in this tank. Air Grid used for aeration purpose shall be non-clog. The sewage collected in equalization tank is pumped and passed through the moving bed bioreactor. Bioreactors will be provided for the efficient working and removal of BODs for the required retention time. The process inside the moving bed bioreactors consists of adding small cylindrical-shaped polyethylene/polypropylene carrier elements in aerated basins to support biofilm growth. The small cylinders are provided with a cross inside the cylinder and longitudinal fins on the outside. The biofilm carriers are maintained in the reactor by the use of a perforated plate with appropriate slot at the tank outlet. Air agitation or mixers are applied in a manner to continuously circulate the packing. The waste water from first bioreactor flows by gravity through the perforated plate/mesh to the next bioreactor kept in series. Inside the bioreactors, aerobic bacteria grow in an attached growth from around the moving plastic media inside the reactors. The bacteria have to reduce BOD
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Proposed Group Housing Project “Raheja Vanya” Village Gopalpur & Dhankot, Sector-99 A, District Gurgaon Haryana CONCEPTUAL PLAN
& COD of waste water in the presence of oxygen provided through the air grids located at the bottom of the reactors. The Process does not require any return activated sludge flow or backwashing. From the bio-reactors, the effluent passes by gravity into the clarifier (Tube Settling Tank). Clarifier will be a hopper bottom sedimentation tank provided with appropriate size PVC tube deck media. The suspended solids will settle at the bottom of the tank & clear supernatant will overflow to filter feed tank through outlet launder. The collected sludge at bottom shall be transferred through pumps to sludge holding tank. The clear supernatant after clarifier will be collected in to filter feed tank. This tank will act as housing tank for filter feed pumps. The clarified & disinfected water will be then fed to filtration unit. Filtration unit consisting of Dual Media sand filter, activated carbon filter and ultra filtration system (optional) will remove the residual impurities such as odor/color, suspended solids, BOD/COD. The treated water after the filtration unit will be collected in Irrigation cum Flushing water storage tank from where it is transferred to flushing water tank at terrace & Irrigation System. Excess sludge from the bottom of the settling tank will be removed and transferred to sludge holding tank. Air grid shall be provided in this tank to avoid conversion into anaerobic conditions, thickening of sludge and keep sludge in homogenous condition. The digested & thickened sludge shall be further thickened through Sludge Dewatering System (Filter press with screw pump) and disposed off periodically through closed tanker or can be reused as manure.
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Proposed Group Housing Project “Raheja Vanya” Village Gopalpur & Dhankot, Sector-99 A, District Gurgaon Haryana CONCEPTUAL PLAN
Figure 2: SCHEMATIC DIAGRAM OF STP
Sewer System: The alignment and slope of the sewer line will follow the road network, drains or natural ground surface and will be connected to the trunk sewers. The discharge point will be a treatment plant, a pumping station, a water course or an intercepting sewer. Pumping stations would be provided at places where the natural slope of the terrain is insufficient to permit gravity flow or the cost of excavation is uneconomical to do the same.
RAIN WATER HARVESTING
The storm water collection system for the premises shall be self-sufficient to avoid any collection/stagnation and flooding of water. The amount of storm water run-off depends upon many factors such as intensity and duration of precipitation, characteristics of the tributary area and the time required for such flow to reach the drains. The drains shall be located near the carriage way along either side of the roads. Taking the advantage of road camber, the rainfall
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Proposed Group Housing Project “Raheja Vanya” Village Gopalpur & Dhankot, Sector-99 A, District Gurgaon Haryana CONCEPTUAL PLAN run off from roads shall flow towards the drains. Storm water from various towers connected to adjacent drain by a pipe through catch basins. Therefore, it has been calculated to provide 12 rainwater harvesting pits at selected locations, which will catch the maximum run-off from the area. 1) Since the existing topography is congenial to surface disposal, a network of storm water pipe drains is planned adjacent to roads. All building roof water will be brought down through rain water pipes. 2) Proposed storm water system consists of pipe drain, catch basins and seepage pits at regular intervals for rain water harvesting and ground water recharging. 3) The peak hourly rainfall of 45 mm/hr shall be considered for designing the storm water drainage system.
Rain water harvesting has been catered to and designed as per the guideline of CGWA. Peak hourly rainfall has been considered as 45 mm/hr. The recharge pit of 3 m diameter and 5 m depth is constructed for recharging the water. Inside the recharge pit, a recharge bore is constructed having adequate diameter and depth. The bottom of the recharge structure will be kept 5 m above ground water level. At the bottom of the recharge well, a filter media is provided to avoid choking of the recharge bore. Design specifications of the rain water harvesting plan are as follows: Catchments/roofs would be accessible for regular cleaning. The roof will have smooth, hard and dense surface which is less likely to be damaged allowing release of material into the water. Roof painting has been avoided since most paints contain toxic substances and may peel off. All gutter ends will be fitted with a wire mesh screen and a first flush device would be installed. Most of the debris carried by the water from the rooftop like leaves, plastic bags and paper pieces will get arrested by the mesh at the terrace outlet and to prevent contamination by ensuring that the runoff from the first 10-20 minutes of rainfall is flushed off. No sewage or wastewater would be admitted into the system.
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Proposed Group Housing Project “Raheja Vanya” Village Gopalpur & Dhankot, Sector-99 A, District Gurgaon Haryana CONCEPTUAL PLAN
No wastewater from areas likely to have oil, grease, or other pollutants has been connected to the system.
Calculations for storm water:
Plot Area = 50,530.75 m2
Roof-top area = Ground Coverage = 12,632.6875 m2
Green Area = 15,159.225 m2 Paved Area = Plot Area – (Roof-top Area + Green area) = 50,530.75 – (12,632.6875 + 15,159.225) = 22,738.83 m2
Runoff Load
Roof-top Area = 12,632.6875 × 0.045 × 0.80 = 454.77 m3/hr
Green Area = 15,159.225 × 0.045 × 0.20 = 136.43 m3/hr
Paved Area = 22,738.83 × 0.045 × 0.70 = 716.27 m3/hr
Total Runoff Load = 454.77 +136.43 + 716.27 m3/hr = 1307.47 m3/hr
Taking 20 minutes Retention Time, Total volume of storm water = 1,307.47/ 3 = 435.82 m3
Taking the effective dia and depth of a Recharge pit 3 m and 5 m respectively, Volume of a Single Recharge pit = π r2h = 3.14 × 1.5 × 1.5 × 5 = 35.325 m3
Hence No. of pits required =435.82/ 35.32 = 12 No. of pits proposed = 12
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Proposed Group Housing Project “Raheja Vanya” Village Gopalpur & Dhankot, Sector-99 A, District Gurgaon Haryana CONCEPTUAL PLAN
Figure 3: Rain Water Harvesting Pit Design
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Proposed Group Housing Project “Raheja Vanya” Village Gopalpur & Dhankot, Sector-99 A, District Gurgaon Haryana CONCEPTUAL PLAN
PARKING FACILITIES
Adequate provision will be made for car/vehicle parking at the project site. There shall also be additional parking provisions for visitors so as not to disturb the traffic and allow smooth movement at the site.
Parking Required: As per MoEFCC norms: For Residential facilities = 1 ECS/ 100 m2 FAR area = 121281.3/100 = 1213 ECS For Commercial & Community = 1 ECS/ 50 m2 FAR area = 118.750/50 = 3 ECS Total parking required as per MoEF Norms = 1213+3 = 1216 ECS
As per Haryana Bye laws: For Main DU: 2 ECS per DUs (865 DUs) = 1730 ECS Total parking required as per Haryana Bye laws = 1730 ECS
Parking Proposed: Area provided for parking in Basement = 60,550 m2 Area required for 1 ECS of Basement parking = 35 m² Parking provided in Basement = 1730 ECS TOTAL PARKING PROPOSED = 1730 ECS
POWER REQUIREMENT
The power will be supplied by Dakshin Haryana Bijli Vitran Nigam Limited. The connected load for the Group Housing Colony Project will be approx. 4042 kVA.
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Proposed Group Housing Project “Raheja Vanya” Village Gopalpur & Dhankot, Sector-99 A, District Gurgaon Haryana CONCEPTUAL PLAN
Details of D.G Sets During the power failure the power will be supplied through DG sets. There is provision of 3 no. of DG sets of total capacity 1500 KVA (3 X 500 kVA) for power back up in the Group Housing Project. The DG sets will be equipped with acoustic enclosure to minimize noise generation and for the proper dispersion of effluent emission the stack height will be provided through the building.
SOLID WASTE GENERATION
Solid waste would be generated both during the construction as well as operation phase. The solid waste expected to be generated during the construction phase will comprise of excavated materials, used bags, bricks, concrete, MS rods, tiles, wood etc. The following steps are proposed to be followed for the management solid waste: Construction yards are proposed for storage of construction materials. The excavated material such as topsoil and stones will be stacked for reuse during later stages of construction Excavated top soil will be stored in temporary constructed soil bank and will be reused for landscaping of the affordable group housing project. Remaining soil shall be utilized for refilling / road work / rising of site level at locations/ selling to outside agency for construction of roads etc.
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Proposed Group Housing Project “Raheja Vanya” Village Gopalpur & Dhankot, Sector-99 A, District Gurgaon Haryana CONCEPTUAL PLAN
Solid Waste
Constructio n Waste
Construction Empty waste, Cement Excavated Broken Bricks, Bags Soil Waste Plaster
Sold to Used in re-filling, agency for Top soil conserved for landscaping, raising site level recycling balance used in re-filling
Figure 4: Solid Waste Management Scheme (Construction Phase)
During the operation phase, solid waste will comprise domestic as well as horticultural waste. The solid waste generated from the project shall be approx. 2519 kg/day (@ 0.5 kg/capita/day for residents, @ 0.15 kg/capita/day for visitors, 0.25 kg/capita/day for nursery school and landscape waste @ 0.2 kg/acre/day). Following arrangements will be made at the site in accordance to Municipal Solid Wastes (Management and Handling) Rules, 2016.
Table 6: Calculation of Solid Waste Generation
Waste Generation Waste generated S. No. Category (kg/capita/day) (kg/day) 1. Residents (4809) @ 0.50 2404 2. Nursery School (112) @0.25 28 2. Visitors (240) @ 0.15 36 Landscape waste 3. @ 0.2 kg/acre/day 1 (3.745 acre)
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4. STP Sludge 50 TOTAL SOLID WASTE GENERATED 2519 kg/day (Source: For Waste Collection, Chapter 3, Table 3.6, Page no. 49, Central Public Health & Environment Engineering Organization, Ministry of Urban Development, (Government of India, May 2000))
Collection and Segregation of waste 1. A door to door collection system will be provided for collection of domestic waste in colored bins from household units. 2. The local vendors will be hired to provide separate colored bins for dry recyclable and Bio-Degradable waste. 3. Adequate number of colored bins (Green and Blue & dark grey bins– separate for Bio-degradable and Non Bio-degradable) are proposed to be provided at the strategic locations of the project. 4. Litter bin will also be provided in open areas like parks etc. Treatment of waste Bio-Degradable wastes
1. Bio-degradable waste will be subjected to composting by organic waste converter and the compost will be used as manure. 2. STP sludge is proposed to be used for horticultural purposes as manure. 3. Horticultural Waste is proposed to be composted and will be used for gardening purposes. Recyclable wastes i. Grass Recycling – The cropped grass will be spread on the green area. It will act as manure after decomposition. ii. Recyclable wastes like paper, plastic, metals etc. will be sold off to recyclers. Disposal Recyclable and non-recyclable waste will be disposed through a local approved agency. Solid waste management Scheme is depicted in the following figure:
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Figure 5: Solid Waste Management Scheme (Operation Phase)
GREEN AREA
Total green area is 15,159.225 m2 i.e. 30 % of plot area for green belt, avenue plantation and lawn. Evergreen tall and ornamental trees like Alstonia scholaris, Anhtocephalus cadamba, Bauhinia varieagata, Caryota millitis, Cassia fistula etc. have been to be planted inside the premises. Table 7: List of species to be planted ROADSIDE & PERIPHERAL PLANTATION PLANTS FOR LAWN S. No. Scientific Name Common Name Scientific Name 1. Azadirachtus indica Neem Delonix regia 2. Aistonia scholaris Saptaparni Plumeria alba 3. Casia fistula Amaltas Chorisla speciosa 4. Chorisia speciosa Mexican silk cotton Callistemon lanceolatus 5. Delonix regla Gulmohar Erythrina blackie 6. Callistemon lanceolatus Bottle brush Golden bottle brush 7. Greviliea robusta Silver oak Ficus reginald Calliandra 8. Spathodea campanulata Indian coral tree red/haematocephala Lagerstroemia flos- 9. Arjun Hebiscus le france reginae 10. Plumeria alba White champa Nyctanthus arbotristis
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11. Kigelia pinnata Indian sausage tree Ficus panda 12. Bauhinia varigata Variegated kachnar Hamelia patens 13. Bauhinia blakiana Purple kachhar Plumbago capensis 14. Milingtonia hortensis Akash neem Juniperus occidentalis 15. Anthocephalus kadamba Kadamb Golden Duranta 16. Jacaranda mimisaefolia Nili gulmohar Cuphea (white) Pterospermum 17. Kanak champa Cuphea (Purple) acerfolium 18. Phllarthus emblica Amla Ophiopogon (v) 19. Eugenia jambolana Kala jamun 20. Morus alba Mulberry (black) 21. Morus alba Mulberry (white) 22. Phoenix dectryphylium Data palm (khajoor)
DETAILS OF CONSTRUCTION MATERIAL List of building materials being used at site: 1. Coarse sand 2. Fine sand 3. Stone aggregate 4. Stone for masonry work 5. Cement 6. Reinforcement steel 7. Pipe scaffolding (cup lock system) 8. Bricks 9. CLC fly ash blocks 10. Crazy (white marble) in grey cement 11. P.V.C. conduit 12. MDS, MCBs 13. PVC overhead water tanks 14. 2 1/2'’ thick red colour paver tiles 15. PPR (ISI marked) 16. PVC sullage lines 17. S.W. sewer line up to main sewer 18. PVC rain water down take 19. Stainless steel sink in kitchen 20. Joinery hardware- ISI marked
MATERIALS USED FOR CONSTRUCTION & THEIR U VALUE
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LIST OF MACHINERY USED DURING CONSTRUCTION
(i) Dumper (ii) Concrete mixer with hopper (iii) Excavator (iv) Concrete Batching Plant (v) Cranes (vi) Road roller (vii) Bulldozer (viii) RMC Plant (ix) Tower Cranes (x) Hoist (xi) Labor Lifts (xii) Pile Boring Machines (xiii) Concrete pressure pumps (xiv) Mobile transit mixer
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