nsrcf vision 2020

NSRCF-VISION 2020 Kadri Consultants Pvt.Ltd.

NEPEAN SEA ROAD CITIZENS’ FORUM

NSRCF-VISION 2020


GOOGLE EARTH IMAGE OF THE NEPEAN SEA ROAD

LENGTH- 1.74KM

Nepean sea road


Principles for street design

Safety

Streets must be safe for all users. This implies that every street needs to have a slow zone where pedestrians have priority .In smaller streets with a shared space format, the entire street becomes a slow zone for all users, including pedestrians, vendors, cycles, and cars.

Mobility

Larger roads can include a mobility zone forvehicle movement. This mobility zone—for Private vehicles and public transport—is physicallyseparated from the slow zone. The mobilityzone may include a segregated cycle trackif the speed differential between cyclists andmotor vehicles is high. In addition, dedicatedbus lanes can improve service quality for publictransport users.

Pedestrian accessibility

All streets need to have continuous footpaths or safe shared space with minimal grade differences and adequate clear widthfor pedestrian through movement.

Livability

Elements such as treelines, landscaping,and furniture enhancea street’s slow zone,creating space forrelaxation, interaction,vending, and otheractivities.

Sensitivity to local context

Street design shouldfactor in local streetactivities, patterns ofpedestrian movement,and nearby land uses.

Creative use of street space

For example, the widthoccupied by a parkinglane can become multiFunctional if it includes occasional bulb-outsFor street vending or Street furniture.


Pedestrianzone

Furniturezone

Frontagezone

Furniturezone

Pedestrianzone

Frontagezone

Footpaths have distinct zones thatserve separate purposes:

Pedestrian zone. This zone providescontinuous space for walking and should be clear of any obstructions. It should be at least 2 m wide.Frontage zone. Provides a buffer between street-side activities and the pedestrian zone. Next to a compound wall, the frontage zone can become a plantation strip.Furniture zone. This is a space forlandscaping, furniture, lights, bus stops, signs, and private property access ramps.

The smallest well functioningfootpath/tree package has a widthof 3 m, including a 2 m clear space and 1 m tree pits. Street furniture is positioned in line with the tree pits to maintain 2 m of clear space.

Footpath-Ideal footpath layout


The issues to be addressed in Nepean sea road based on our site analysis and observation are as follows:-

• underutilized footpath due to discontinuity.• physical hindrance on footpath leading to insufficient width.• undefined pedestrian crossing.• inefficient bus stops and bus shelter to be given a makeover.• inadequate street furniture like benches and trash receptacles along the street.• vendor encroachment on footpath.

“ The character of the city and its neighborhoods is largely determined by the appearance of its streetscape.” - Time-Saver standards for Urban Design


footpathdiscontinuity

Existing footpathdiscontinuity / linkage

images showing footpath discontinuity near Lodha Costeria

St.STEPHEN’S CHURCH


footpath- discontinuityExisting footpathdiscontinuity / linkage

Petrol pump near Swapnalok

Near Matru Ashish Near Farmfair MAFCO

LAXMI VILAS


footpathdiscontinuity

Existing footpathdiscontinuity / linkage

Burhani Mahal Mont Blanc Ram Mansion

PDPRUNGTHA LANE


footpath- discontinuityExisting footpathdiscontinuity / linkage

S M Ruja Shivner Symphony

Nepean house Birla House RBI building

BIRLA HOUSE


Existing case-1

Existing case-2

Ideal solution

Break in connectivityEnding the footpath with abrupt curbs

Lowering the entire footpath to the level of the carriageway is unacceptable as property entrances may become waterlogged

Providing vehicular access ramps ensures connectivity in footpath

Footpath-connectivity


Footpath - solution for discontinuity

Raised pedestrian crossing ensures footpath connectivityand safety to the pedestrians

xx’

section xx’


footpath- insufficient width due to hindrance (tree pits)

Near Urvashi Near Rungtha Lane Nepean Garage

Near Petit Hall OrbitLodha Costeria Ila Kunj


footpath- solution for insufficient width

existing condition

section xx’ plansection yy’plan

a-existing effective widthb-effective width after interventionc-overall footpath width

proposal

y y’x x’

protruding curb in tree pits can be replaced by a tree grate. Thus increasing the effective footpath width.



Tree Grate-costingSpecification Size (mm) No's Rate/unit Amount

Overall dimensions: 1000mm (Length) X 1000mm (Width) X 40 mm (Thickness) Each Tree Surround set consists of 4 Nos panels of 500mm Length X 500mm width X 40mm Thickness 1000 X 1000 X 40 50 1,262 63,116

Overall dimensions: 1500mm (Length) X 1500mm (Width) X 40 mm (Thickness) Each Tree Surround set consists of 4 Nos panels of 750mm Length X 750mm width X 40mm Thickness

1500 X 1500 X 40 90 2,074 1,86,662

Overall dimensions: 1800mm (Length) X 1800mm (Width) X 40 mm (Thickness) Each Tree Surround set consists of 4 Nos panels of 900mm Length X 900mm width X 40mm Thickness 1800 X 1800 X 40 10 3,062 30,621

Total 150 2,80,399 Note: Prices indicated are inclusive of taxes ≈ 3 lakhs



existing condition with tree-pit at the center proposal

at locations where the tree pit is centrally placed, pedestrian free movement is achieved by replacing a car park with a bulb-out.


This painted crossing is ineffective as drivers do not observe painted road markings. The only means of ensuring pedestrian safety is physical treatment.

This raised pedestrian crossing compels vehicle users to slow down. The height of the crossing is the same as that of the adjacent footpath, improving convenience for pedestrians.

Existing crossing

proposal

section xx’

Pedestrian crossing


In the context of Nepean sea road, the locations of the existing BMC bus stops are at the curb side. It is by and large observed that the utilization of the stop & shelter is negligible. The distance between the stop and the bus is sufficient to incorporate a passing lane. The size of the shelter is not large enough to hold the number of passengers waiting at the stop. Hence the passengers spill over on to the road. Also, accesses to a majority of the bus stops have been obstructed by large trees and vendors.

Curb side bus stops have to be segregated from the pedestrian pathway wherever the footpath width is less.

Bus stop & Bus shelter – site analysis

Passenger spill over on the road


Bus stop & Bus shelter – site analysis

on street parking near bus stopno bus shelter

bus stops in the middle of the roadresulting in traffic congestion

existing case - 1


Bus stop & Bus shelter – site analysis existing case - 2

tight space for pedestrians to pass by

xx’

section xx’


Kerb Side Bus Stop: A bus stop by the kerb is the usual type of bus stop, and this makes it possible for traffic to pass the bus while it is at the bus stop. The design is simple and it is easy to fit in to any street. However, problems sometimes are that some parking spaces by the kerb have to be removed in order for the bus to access the stop, and also this kind of stop does not give buses any priority. Buses can also sometimes have problems entering the bus stop if cars have been parked too close to the bus stop.

The minimum footpath width at a bus stop should normally be 3m. Where a shelter is to be provided, there should be at least 0.5m clearance between any part of the shelter and the edge of the road. There should be a clear footway of at least 1.3m between the shelter and the rear edge of the footpath (both for cantilever-style shelters where the roof extends beyond the support and enclosed shelters).

Bus stop-Ideal LayoutBus stop- Ideal Layout 1


Lay-by bus stop : Lay-by bus stops are often provided, to enable buses to stop out with the traffic stream, and to eliminate the obstruction of other traffic by stationary buses. However, on busy roads, particularly where traffic is moving constantly, it is often difficult for buses to then re-enter the traffic stream. Because of this there is a common tendency for drivers not to pull fully into the lay-by. This can cause inconvenience to passengers, particularly during heavy rain when kerbside gutters may be running with water. It can also cause problems for elderly and disabled passengers.

The minimum footpath width at a bus stop should normally be 3m. Where a shelter is to be provided, there should be at least 0.5m clearance between any part of the shelter and the edge of the road. There should be a clear footway of at least 1.3m between the shelter and the rear edge of the footpath (both for cantilever-style shelters where the roof extends beyond the support and enclosed shelters).

Bus stop-Ideal Layout

Bus stop-Ideal Layout 2


Footpath-costing

SI.No Item Description Area (sq.m ) Volume (cum) Rate/ sq.m or cum Amount

1.) Pre-Cast Concrete Paver Block

providing and laying paver block 60mm thk including bedding (sand-50mm thk) 2816 - 1240 34,91,840

2.) Road Metal Filling

road metal filling to make up the footpath level - 197 1750 3,44,750

3.) Concrete

concrete 1:2:4 at edge of paver block including shuttering - 62 9000 5,58,000

Total 43,94,590

Note: Prices indicated are inclusive of taxes ≈44 lakhs


Street furniture-benches

ideal street bench

• maintenance-free & durable• simple yet effective• lightweight & easy installation• prevents people from lying down

existing pre-cast concrete benches in dilapidated condition

Armrests in between are sometimes provided to discourage lying down andunwanted closeness.


Street bench -options


Stainless Steel Bench- Costing S.I No. Specification No's Rate/unit Amount Amount in lakhs

1.)

Type:1 6 ft length, 4 seater stainless steel 304 grade with curved seating and backless bench with matt buff finish and rectangular base support. 50 30,284 15,14,200 ≈15.2 lakhs

2.)

Type 2: 6 ft length, 4 seater stainless steel 304 grade with curved seating and back support with buff finish and rectangular base support. 50 33,674 16,83,700 ≈17 lakhs

Note: Prices indicated are inclusive of taxes

Type 1 Type 2

Costing-Street Furniture

SS DUST BIN- COSTINGSI.No Specification No's Rate/Unit Amount

Type 1

SS dust bin pivotable,fixed to two SS posts.grade-202,capacity 60 ltrs 24 10735 2,57,640 ≈ 2.6 lakhs

Type 2

SS dust bin pivotable,fixed to two SS posts.grade-304,product code PGGD13 24 9732 2,33,568 ≈ 2.4 lakhs

Type 1

Type 2


footpath- vendors blocking the free pedestrian movement

These vendors should be relocated to the listed vendor zones.


Study –New York vendor management policy

• min footpath width -3.7m• min distance from the entrance of the building - 6.1m• min dist. from edge of the curb - 0.45m

Based on the New York street vending guide

The effective width of footpath with street vendors required is 3.7m or more.

In the context of Nepean sea road we have identified potential zones to locate these street vendors.

S.I No Vendor Zones No’s1. PDP 82. Dena Bank 93. Matru Ashish 84. Mont Blanc 35. Radymony House 26. Shahanaz 5

Total 35

potential vendor zones


çpriya darshini park

street vendor- potential zone 1 : PDP

possible vendor count-8

overall width - 3.7 mclear pedestrian width - 2.2 mfurniture / vendor zone width – 1.5 m

vendor zone


street vendor- potential zone 2: Dena bank

possible vendor count- 9

overall width – 4.2 mclear pedestrian width – 3.0 mfurniture / vendor zone width – 1.2 m

vendor zone


street vendor- potential zone 3 : Matru Ashish

possible vendor count-8


vendor zone


Street Vendor- potential zone 4 : Mont Blanc

possible vendor count - 3


vendor zone


Street Vendor- potential zone 5 : Readymoney House



vendor zone

readymoney house


street vendor- potential zone 6 : Shahanaz



vendor zone


mobile carts

we recommend mobile carts over stationary kiosks


Building Numbering System

Building Numbering System

SI.No. Specifications size (mm) Rate/plate

1.)SS 304 grade 2 mm thk matt finish plate with name itching and painted with epoxy based paint as per design

297 x 420 4,000


Promenade recreating the coastal edge


Reclamation

Nepean sea road and its coastline is a natural surface.(not reclaimed)


Images showing reclamation around the world

Map of reclaimed land in the San Francisco bay area. Reclaimed land is colored brown.

Reclamation of Hung Hong Bay in Hong Kong

Reclaimed land in Marina Bay, Singapore


Images showing reclamation around the world

The entire East Coast Park in Singapore was built on reclaimed land with a man-made beach.

Land reclamation done in Perth

Land reclamation in the Beirut Central District, Lebanon1941 view of Lakefront improvement project in New Orleans


Coastline of Maharashtra

Coastline of Maharashtra is 720km in length

Our intervention ,Length = 4.7 km.Area = 0.24 sq.km 0.65 %


Mumbai-east coastMumbai-west coast

Naval dockyard on the east coast makes it nearly impossible for any water front developments for public recreational activities.

There is a need for open space in Mumbai due to the increasing population & diminishing land resources. West coast can be made accessible by developing a promenade ,thus giving local dwellers opportunity to take advantage of the beautiful views and fresh air from the sea.

• Majority of the Mumbai’s coast is un-utilized and is inaccessible.• Mumbai per capita open space -1.14 sq.m• Mumbai open space area- 14 sq.km i.e, 2.5 % of open space

Our intervention , can add to an area of 0.24 sq.km of open space on the west coast.

WHY West Coast ???

Ashutosh Limaye, head, Research and Real Estate Intelligence Service, Jones Lang LaSalle India, has said in his report,"What I found more disturbing was the non-utilization of Mumbai's natural gifts. An open western coastline of 35 km and a natural harbour on its eastern coast is kept away from people, with less than 10 organized access areas to the sea. With hardly any water sports and occasional water front parks, the Arabian Sea is reduced to a mute spectator for Mumbaikars."

Open space per capita Mumbai: 1.14 sq mDelhi: 15 sq mBangalore: 6.4 sq m UN Food and Agriculture standard: 9 sq m


Overall stretch of Promenade

AIMTo Propose a Promenade by providing more open space to the city as a Public Realm, where people thrive.

Promenade

Proposed Promenade Length 4.7 km

IssuesSewage water treatment

Rain water Harvesting

Open Space Requirement

Transportation

- Raw Sewage let out in the sea- Pathetic condition of Sea around Mumbai

- Mumbai – high rainfall- Natural resources not used to its potential

- Ideal = 10.117 sq.m./person- Mumbai = 1.1 sq.m./person

- Linear city makes transportation a crucial issue

IN MUMBAI,Open spaces description-

Description-Promenades-Waterfront-Beaches-PG,RG-Fort Precincts-Hills and forest-City forest

TOTAL

Areas0.92 sq.km.0.03 sq.km.1.39 sq.km.18.98 sq.km.0.083 sq.km.64.31 sq.km.1.8 sq.km.

87.513 sq.km.


Avg. of 38-40m wide is the difference between low-high tide.Study of tide

High Tide level

Low tide level

Plot lines


Site Study- Topography, Coastal Edge

Uneven rock surface50m wide is the difference between low and high tideVertical edge along the slums forms the edgeSome part of the stretch has constructed retaining wallMost of the people living in slums are Dhobis


Government Proposal


Govt.proposal• Area considered- PDP to Mahalaxmi temple

• 20 m wide promenade on the landward side + a twin four lane carriageway for the coastal freeway + a 30m wide promenade on the sea side

1 1’

coastal link roadtunnel

section 1-1’ showing the promenade and the coastal link road

google earth image showing the extent

PDP

Mahalaxmi temple

Plan showing the distribution of spaces


section 1-1’ showing the promenade and the coastal link roadfrom PDP to Mahalaxmi temple (2.7 km)

1 1’

2 2’

coastal link road

Option 1 : our intervention• Area considered- Banganga to PDP

• 2 km long and 50m wide promenade

tunnelpromenade

2 km

section 2-2’ showing continous open space from Banganga to PDP (2 km)

PDP

Mahalaxmi temple

Banganga


2 2’

3 3’

4.7

km2

km2.

7 km

coastal link roadtunnelpromenade

Option 2 : Our intervention• 4.7 km long and 50 m wide of open space consisting of:- - 2km long + 50m wide promenade from Banganga to PDP. - 2.7km long + 50m wide promenade and tunnel from PDP to Mahalaxmi Temple.

section 3-3’ showing the open space with tunnelfrom PDP to Mahalaxmi temple (2.7 km)

section 2-2’ showing continous open space from Banganga to PDP (2 km)

PDP

Mahalaxmi temple

Banganga


Option 1 - Govt. ProposalArea Considered - PDP to MAHALAXMI TEMPLE50m Promenade + 37m Coastal Road.

S.No Item Despcription Quantity Unit Rate CostCrores

1 Retaining Wall length=2700m, Height=12m

Including the cost for additional protection methods during construction

2,500 R.M 460000 115.000

2 Tetrapods (0.83 cu.M volume and weighing 2 ton each) 1,62,000 Cu.M 22,000 356.400

2 Boulders 4,72,500 Cu.M 5,000 236.25 3 Rubble (Small Stones) (over boulders to reduce voids

and make land more compact)6,96,600 Cu.M 650 45.279

3 Debris* 4,64,400 Cu.M 610 11.331 5 Murrum 3,94,740 Sq.M 450 17.763 6 Hardscaping 27,000 Sq.M 1240 3.348 7 Landscaping 1,08,000 Sq.M 650 7.020 8 Road 99,900 Sq.M 1700 16.983 9 Foot Over Bridges (6 Nos.) 1,500 Sq.M 16000 2.400 Total Cost in Crores 809.375

* Note:-1 Although debris will be supplied free of cost by the Govt., still 60% of total quantity is assumed to be free and the remaining

40% to be procured incase the required quantity is not available.

Costing-Promenade


Costing-Promenade Option 2 - Our InterventionArea Considered - Banganga to PDP2 Km long and 50m Promenade

S.No Item Despcription Quantity Unit Rate Cost

Cu.M Crores 1 Boulders 6,25,000 Cu.M 5000 312.500 2 Rubble (Small Stones)

(over boulders to reduce voids and make land more compact) 2,00,000 Cu.M 650 13.000

3 Debris* 2,00,000 Cu.M 610 4.880 4 Murrum 1,00,000 Cu.M 450 4.500 5 Hardscaping 20,000 Sq.M 1240 2.480 6 Landscaping 80,000 Sq.M 650 5.200

8 Rain Water Harvesting ** 100 Crores Litres per year L.S. 3.000

9 S.T.P *** 10 lakh Litres per day L.S. 3.000 Total Cost in Crores 348.560

Note:-

* Although debris will be supplied free of cost by the Govt., still 60% of total quantity is assumed to be free and the remaining 40% to be procured incase the required quantity is not available.

** Yearly Approx. 333300 Tankers of water will be harvested and re-used.

*** Daily Approx. 333 Tankers of water will be treated.


Costing-Promenade Option 3 - Our Intervention4.7 Km long and 50m wide of Continuous Open Space consisting of;

- 2 Km Long and 50m wide Promenade from Banganga to PDP

- 2.7 Km Long and 50m wide Promenade + Tunnel from PDP to Mahalaxmi Temple

S.No Item Despcription Quantity Unit Rate Cost

Cu.M Crores 1 Boulders 14,93,125 Cu.M 5000 746.563 2 Rubble (Small Stones) (over boulders to reduce voids and make land more compact) 3,48,500 Cu.M 650 22.653 3 Debris* 3,48,500 Cu.M 610 8.503 4 Murrum 2,35,000 Cu.M 450 10.575 5 Hardscaping 47,000 Sq.M 1240 5.828 6 Landscaping 1,88,000 Sq.M 650 12.220 7 Tunnel Construction

2,700 R.M 2500000 675.000

(2700m length with Two lanes of 4.5m on either side.)a) Rock cuttingb) Tunnel Concreting c) Ventilationd) Electrificatione) Drainage systemf) Geological Investigations 8 Rain Water Harvesting ** 100 Crores Litres per year L.S. 3.000 9 S.T.P *** 10 lakh Litres per day L.S. 3.000 Total Cost in Crores 1487.341

Note:-

* Although debris will be supplied free of cost by the Govt., still 60% of total quantity is assumed to be free and the remaining 40% to be procured incase the required quantity is not available.

** Yearly Approx. 333300 Tankers of water will be harvested and re-used.

*** Daily Approx. 333 Tankers of water will be treated.

NSRCF-VISION 2020 Kadri Consultants Pvt.Ltd.Sewage Outlets

NSRCF-VISION 2020 Kadri Consultants Pvt.Ltd.Locations for STP to be set up

Proposed Sewage treatment plant

Our intervention can save Volume of ~9,74,400 ltrs of water per day

Daily approx. 333 tankers of water will be treated.

Schematic section showing Sewage treatment plant


Low tide boundaryHigh tide boundary

Water Harvesting Locations

Water Harvesting Location

Our intervention can save Volume of ~97,54,83,000 ltrs of water per year.

yearly approx.333300 tankers of water will be harvested and re-used.


Soft Edge along Coast will allow the play of Sea water.

Soft edge

Raj bhavan

Mahalaxmi Temple

Girgaum Chaupatty

PDP

Idea is to relive the old coastline of Mumbai in today's context to create Promenade along the Stretch from Banganga to Mahalaxmi Temple


Study of Beaches, Groves

Continental Shelf for Beaches Beach

Grooves

Conditions for Mangroves to grow

Grooves

Amarson’sGarden

PDP


Objectives - Prepare Comprehensive waterfront plan- Establish walking and cycling tracks- Promote social, cultural and recreational opportunities- Democratize Coastline- Recycle Sewage water- Rain water harvesting Proposals- Conserve and protect Eco-Sensitive coast by creating a soft edge- Incorporating our intervention in the Proposed Coastal Road Project


Acknowledgements:

• Better streets, better cities by ITDP ,EPC A guide to street design in urban India

• Time-Saver standards for Urban Design

• Bombay then / Mumbai Now by Jim Masselos, Pramod Kapoor


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