MUNICIPAL CORPORATION OF GREATER MUMBAI. Presentation for Ease of doing business

Transcription

1 MUNICIPAL CORPORATION OF GREATER MUMBAI Presentation for Ease of doing business CH.E.(SWD) DEPT.

2 MCGM Guidelines of Internal Building MCGM Guidelines of Internal Building Services in SWD Department

3 DESCRIPTION CITY EASTERN SUBURBS MAJOR NALLA WIDTH > 1.5 M MINOR NALLA WIDTH< 1.5 M ARCH/BOX DRAINS ROAD SIDE DRAINS Length of Nallas& Drains (Kms) NO. OF WATER ENTRANCES (Nos) CLOSED PIPE OR DHAPA DRAINS WESTERN SUBURBS TOTAL

4 Storm Water Drain Outfalls Outfall Discharges into Island City Eastern Suburbs Western Suburbs TOTAL Arabian Sea Mahim Creek Mahul Creek Thane Creek Total Outfalls Below Mean Sea Level (M.S.L.) = 44 Nos. Outfalls above M.S.L. but below High Tide Level (H.T.L.) = 124 Nos. Outfalls above H.T.L. = 6 Nos. THE ABOVE DATA IS BASED ON INFORMATION GATHERED FROM ALL THE WARD AND ZONAL OFFICES

5 Applicant Architect, registered with council of architect. Graduation in civil engineering with 3 years of experience in relevant field.

6 Appointment of Consultant The owner / Developer may appoint qualified Consultant (graduate in Civil Engineering with minimum 3 years of experience in relevant field) for issuing Internal SWD remarks, Design and Completion Certificate thereof. The Consultant will be responsible for Internal Storm Water Drain/ Street Connection. He will also be responsible for quality of SW Drain Work carried out at site.

7 General Guidelines and Specifications for Internal Services for SWD Remarks The min. formation / ground level of plot. - At least M. (92.00 ) THD or 15 cm. (6 ) above the formation level of existing / proposed footpath. For plot area upto 500 Sq.Mt. - No necessity for providing network of SWD, instead the surrounding area of the buildings shall be paved with proper slope towards the access road. For plot area more than 500 sq.m - The internal (closed/ open) S. W. Drain network shall be provided as per the following Calculations: A = Q / V A - cross sectional area of drain required. Q - plot area x rainfall intensity (I) x runoff coefficient (R) V m per sec.(self cleansing velocity & Drain is running full) I - Rainfall Intensity - 55 mm/hr R - Runoff Co-efficient Contd.

8 General Guidelines and Specifications for Internal Services for SWD Remarks The Storm Water Drain of required c/s area - To be laid by using R.C.C. pipes of NP2 / NP3 class (I.S.I. only) duly encased with 15 cm. thick M-15 cement concrete all around along with provision of water entrances having minimum size of 450mm. X 450mm. covered with M.S. / C.I. gratings. RCC storm water drain of required size - To be constructed in cement concrete of Grade M-20 having minimum wall thickness of 20 cm which shall be covered with gratings with minimum depth of 300 mm at starting slope 1:400. The built up drain shall be covered with prestressed R.C.C. / C.I. grating for entire length. The side / marginal open spaces shall be leveled, consolidated and paved with cement concrete with proper slope in such a way to discharge the storm water into proposed storm water entrances. Before starting of the work, invert levels of water entrance / manhole on Municipal storm water drain / road side open SWD to which internal S. W. Drain is to be connected shall be confirmed on site with reference to invert level of last catch pit chamber of the plot. Contd.

9 General Guidelines and Specifications for Internal Services for SWD Remarks The bottom of catch pit chamber shall be provided minimum 60 cm (2 ) below the invert level of pipe. The access / internal layout roads / D.P. Roads shall be provided with closed Storm Water Drain with regular water entrances at 10 m (30 ) and manholes at 10 m (30 ) c/c at developer s cost. The road side drain to be provided with cross sectional area equal to 1/10 th of the existing/ proposed road. The entire S.W.D. work shall be carried out through the Licensed Plumber and under supervision of Licensed Supervisor. The compound wall shall not be constructed on SWD wall. Adequate numbers of weep holes shall be provided in compound wall where ever necessary. Contd..

10 General Guidelines and Specifications for Internal Services for SWD Remarks Other Conditions: If the Rain Water Harvesting system is proposed within the plot then, the internal SWD network shall be provided such that the entire storm water collected shall be discharged into the pit of Rain Water Harvesting system and Overflow connection shall be made to the nearest SWD on the Municipal road. If during the execution of work of the proposed buildings, if any Storm Water Drain, is found existing within the plot, the work of proposed building shall be stopped and the same shall be brought to the notice of MCGM immediately. No further work shall be commenced unless the remarks regarding the same are obtained from MCGM. If the basement are proposed, then the necessary arrangement shall be provided in basement in accordance with relevant IS Code for proper collection and disposal of storm water. The arrangement shall also be made to pump out the water of the basement to the nearest water entrance within the property by providing sump well.

11 STREET CONNECTION The street connection It shall be made with adequate size of R.C. pipe NP2 / NP3 class (I.S.I. only), duly encased with 15 cm thick M-15 grade cement concrete all around from last catch pit chamber to Municipal S.W. Manhole / water entrances. Street connection shall be made only after the necessary permission for road opening is obtained from A.E. (Maint.) of the concerned ward. The work of providing S.W. Drain from last catch pit chamber to Municipal S.W. Drain shall be carried out under the supervision and as per suggestions of A.E. (Env.) / A.E. (maint.) of concerned ward. In case, if it is not possible to connect internal S.W. Drain to existing manhole on Municipal Storm Water Drain due to site constraints or if the existing manhole is far away from the plot, then the internal S.W. Drain shall be connected to Municipal S.W. Drain by constructing additional manhole on Municipal S.W. Drain at owner / developer s cost. Contd

12 ROAD SETBACK PORTION During construction of foot path water entrances affected by set back shall be shifted suitably by extending existing laterals. If shifting of water entrance is not possible by extending the existing laterals then new water entrance at suitable place shall be provided. The works in the set back portion shall be carried out under supervision of AE (Env.) / AE (maint.) of concern ward. Contd

13 COMPLETION CERTIFICATE Completion Certificate along with plan of S.W. Drains as carried out on site duly signed by Consultant and also by the Licensed Plumber in the prescribed format (Appendix II ). Completion of street connection from last catch pit chamber to Municipal S. W. Drain shall be obtained from AE (Env.) / AE (maint.) of the concerned ward.

14 FORMAT FOR CONSULTANT S REMARK FOR INTERNAL STORM WATER DRAIN (On Letterhead of Consultant ) Sub : Storm Water Drain Remark for the proposed building on plot bearing C.T.S. / C.S. No. of Division, Road in Ward for M/s. Ltd. This is to certify that the said plot is a part of separate layout / individual plot abutting to -----m wide internal Road / DP road / existing MCGM road / M private road. The net plot area is SqM. There exist / does not exists Storm Water Drain system along the said Internal Road/ MCGM Road / M wide D P Road. The detail calculation & design of the SWD inside the plot as annexed hereto. Sample Calculation: 1. Catchment Area : Sqm 2. Rainfall Intensity : 55 mm/hr 3. Velocity : 1.2 m/sec 4. Run Off Co-efficient : 1 5. Calculations of Discharge and Cross Sectional Area requirement Contd.

15 CONSULTANT S REMARKS FOR INTERNAL STORM WATER DRAIN Q = A x I x R Where, Q = Discharge in cu.mt./sec. A = Area of the plot in sq.mt. I = Intensity of Rainfall in mm/sec R = Co-efficient of Surface Run off (1.00) 6. Area of Drain : Area X 0.055/3600 X R / V 7. Size of required Drain : 8. SWD size proposed : General Observations: 1. If any natural water course is passing through the property then specific remark from MCGM is required with the details such as (a) Size of existing natural water course. (b) Proposed width of natural water course, if natural water course is to be widened. 2. Elevation of land (whether the R.L. is above THD or not) To be maintained as per Item No. 3 below. Contd.

16 CONSULTANT S REMARKS FOR INTERNAL STORM WATER DRAIN 3. Minimum formation level of the plot required M (92 feet) above T.H.D. or 15cm. above the formation level of the raised footpath or the existing access road whichever is higher. 4. Adequate storm water drains has been designed in the property including provision for admitting storm water coming from the surrounding locality if required in future. 5. While constructing the S.W. Drain invert level of the drain has been designed such as to admit the storm water coming from the adjoining areas. Additional remarks : 1. The access / internal roads of the layout has been provided with S.W. Drains on each/one side having an area of Sq.m. (as indicated in the accompanying plan). The remarks are offered considering the CTS boundaries as shown in the proposed plans by the Architect/LS.. 2. The road side drains, if any, should be constructed on final R.L. obtained from Competent Authority. 3. Side open spaces have been proposed to be leveled consolidated and paved with proper slope to drain in such a way to dispose off the storm water into the S.W. Drains as proposed and/into the existing drains along Municipal Roads. Contd.

17 CONSULTANTS REMARKS FOR INTERNAL STORM WATER DRAIN 4. The storm water drains as per these remarks are proposed to be constructed and the walls shall be in C.C. M-20 of minimum thickness 0.20 m. over a bed concrete of M-15 c.c. 15 cm thick and M-20 c.c. haunches of 8 cm thick with cement plaster in cm (1:2) 12 mm thick for haunches. 5. The gradient of the drains are proposed in such way to create velocity of 1.20 m. / sec. In case of steep localities where velocity is likely to exceed 2.40m. / Sec. intermediate drop in invert have been provided. 6. Existing covered/open SWD on wide Road shall be cleaned, repaired & maintained. 7. Water entrances of size 0.45 m x 0.45 m clear opening with G.I. grating at top and silt trap at bottom and connect the same to S.W.D through 300 mm dia laterals at 5.00 m c/c distance near road side compound wall along and as per municipal specifications inside the plot, shall be provided. 8. Carriage entrance of AA Class loading slab at every gate with opening of size 0.60mx0.90m at center along with heavy duty frame and cover and locking arrangement shall be provided. Contd.

18 CONSULTANTS REMARKS FOR INTERNAL STORM WATER DRAIN 9. Proper arrangement to dispose of storm water from paved/unpaved open spaces R.G., ramp, approaches & internal road has been proposed to avoid flooding during monsoon season. 10. The invert of the S.W.D on upstream side is proposed to be higher than the invert on downstream side drain. 11. The compound wall shall not be constructed on S.W.D wall / nalla wall. 12. Adequate numbers of weep holes (150 mm dia ) shall be provided in the compound wall wherever necessary. 13. All above S.W.D/Carriage entrance Work shall be constructed as per design of Lic. Structural engineer and stability & completion certificate from lic. structural Engineer shall be submitted before completion certificate. NOTE :- The remarks are offered without prejudice to the ownership of land and status of the land and structures thereon. Consultant s Signature

19 COMPLETION CERTIFICATE FROM CONSULTANT To, 1. Executive Engineer Building Proposal, ward, 2. Executive Engineer SWD, ward, Sub: SWD Completion Certificate for Proposed Residential / Commercial/ Industrial Building on plot bearing CTS Nos of village ,Mumbai. Sir, With reference to above subject matter I/ we on behalf of our clients M./s have completed the work of Storm water drain as per the Remarks bearing number dated by me/us. We are submitting herewith the Completion Certificate as per MCGM format Appendix II as detailed below: Contd

20 COMPLETION CERTIFICATE FROM CONSULTANT APPENDIX II STORM WATER DRAINAGE COMPLETION CERTIFICATE Certified that, I/We have completed the Storm Water Drainage Work for the premises as detailed below Details of work: Proposed Residential/Commercial/Industrial Building on plot bearing CTS Nos of village, Mumbai Layout Approval No. and Date: IOD No. and Date: Name of the Owner :M/s Name of Architect :M/s Name of Developer :M/s The Storm Water Drainage work as mentioned for is carried out as per the remarks issued by me dtd. and as per site conditions to my/our satisfaction, that the workmanship and whole of the materials used are good and that no provision of Act and / or Bye-laws and no requisitions made condition prescribed or order issued under have been transgressed in the course of the work. Consultant: M/s Licensed Plumber: M/s Name: Name Office Address: Office Address: Consultant 's Signature L. P. s Signature

21 Typical chamber Diagram

22 External remark Remarks for road side drains, minor nallas and major nallas will be issued by SWD dept. within seven (7) days after submission of application with relevant plans and requisites.

23 These are guidelines based on the prevailing policies of MCGM, However Consultant may adopt new technologies available for better disposal of Storm Water.

24 Thank You