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 for
vehicle movement. This mobility zone—for
Private vehicles and public transport—is physically
separated from the slow zone. The mobility
zone may include a segregated cycle track
if the speed differential between cyclists and
motor vehicles is high. In addition, dedicated
bus lanes can improve service quality for public
transport users.
Pedestrian accessibility
All streets need to have continuous footpaths
or safe shared space with minimal grade
differences and adequate clear width
for pedestrian through movement.
Livability
Elements such as tree
lines, landscaping,
and furniture enhance
a street’s slow zone,
creating space for
relaxation, interaction,
vending, and other
activities.
Sensitivity to local context
Street design should
factor in local street
activities, patterns of
pedestrian movement,
and nearby land uses.
Creative use of street space
For example, the width
occupied by a parking
lane can become multi
Functional if it includes
occasional bulb-outs
For street vending or
Street furniture.

Pedestrian
zone
Furniture
zone
Frontage
zone
Furniture
zone
Pedestrian
zone
Frontage
zone
Footpaths have distinct zones that
serve separate purposes:
Pedestrian zone. This zone provides
continuous 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 for
landscaping, furniture, lights, bus stops,
signs, and private property access ramps.
The smallest well functioning
footpath/tree package has a width
of 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

footpath- discontinuity
Existing footpath
discontinuity / linkage
images showing footpath discontinuity near Lodha Costeria
St.STEPHEN’S CHURCH

Existing footpath
Petrol pump near Swapnalok
Near Matru AshishNear Farmfair MAFCO
LAXMI VILAS

Existing footpath
Burhani Mahal Mont Blanc Ram Mansion
PDP
RUNGTHA LANE

Existing footpath
S M Ruja Shivner Symphony
Nepean house Birla House RBI building
BIRLA HOUSE

Existing case-1
Existing case-2
Ideal solution
Break in connectivity
Ending 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 connectivity
and safety to the pedestrians
xx’
section xx’

footpath- insufficient width due to hindrance (tree pits)
Near Urvashi Near Rungtha Lane Nepean Garage
Near Petit HallOrbitLodha Costeria Ila Kunj

footpath- solution for insufficient width
existing condition
section xx’ plansection yy’plan
a-existing effective width
b-effective width after intervention
c-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-costing
Specification 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
Length X 750mm width X 40mm Thickness
1500 X 1500 X 40 90 2,074 1,86,662
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 stop
no bus shelter
bus stops in the middle of the road
resulting 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 and
unwanted 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- COSTING
SI.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’s
1. PDP 8
2. Dena Bank 9
3. Matru Ashish 8
4. Mont Blanc 3
5. Radymony House 2
6. Shahanaz 5
Total 35
potential vendor zones

ç
street vendor- potential zone 1 : PDP
possible vendor count-8
overall width - 3.7 m
clear pedestrian width - 2.2 m
furniture / vendor zone width – 1.5 m
vendor zone

street vendor- potential zone 2: Dena bank
possible vendor count- 9
overall width – 4.2 m
clear pedestrian width – 3.0 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

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/pla
te
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)
1838
Colaba causeway
1845
Mahim Causeway
1784
Worli and
Mahalaxmi
1802
Sion Causeway
1838
Colaba causeway
1845
Mahim Causeway
1784
Worli and
Mahalaxmi
1802
Sion Causeway

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 coast
Mumbai-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 m
Delhi: 15 sq m
Bangalore: 6.4 sq m
UN Food and Agriculture standard: 9 sq m

Overall stretch of
Promenade
AIM
To 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
Issues
Sewage 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
Areas
0.92 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
Low tide level
High tide level
Uneven rocks Slums Gaothan houses
having heritage value
Banganga Tank
5
Uneven rock surface
50m wide is the difference between low and high tide
Vertical edge along the slums forms the edge
Some part of the stretch has constructed retaining wall
Most of the people living in slums are Dhobis
Near Rungta Lane
Low tide level
High tide level
Low tide
High tide
Space with less undulations of rocks Garden Road Road Road
Space with less undulations of rocks Ramtek Bunglow
Low tide level
High tide level
Low tide level
High tide level
Least space between high and
low tide can be used effectively
to collect water.
Pathway Football ground Road
ng
n
t as
y
Least space between high and
low tide can be used effectively
to collect water.
Pathway Football ground Road
ng
n
t as
y
Low tide level
High tide level

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 road
tunnel
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 road
from 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
tunnel
promenade
2km
section 2-2’ showing continous open space from Banganga to PDP (2 km)
PDP
Mahalaxmi temple
Banganga

2 2’
3 3’
4.7km
2km2.7km
coastal link road
tunnel
promenade
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 tunnel
from 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. Proposal
Area Considered - PDP to MAHALAXMI TEMPLE
50m Promenade + 37m Coastal Road.
S.No Item Despcription Quantity Unit Rate
Cost
Crores
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:-
1Although 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 Intervention
Area Considered - Banganga to PDP
2 Km long and 50m Promenade
S.N
o
Item Despcription
Quantity
Unit Rate
Cost
Cu.M Crores
1 Boulders 6,25,000 Cu.M 5000 312.500
(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
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 Intervention
4.7 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.N
o
Item Despcription
Quantity
Unit Rate
Cost
Cu.M Crores
1 Boulders 14,93,125 Cu.M 5000 746.563
(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 cutting
b) Tunnel Concreting
c) Ventilation
d) Electrification
e) Drainage system
f) 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
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.

Sewerline outlet
Sewage Outlets

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

Road
Residential
Bus-Depot
Heritage (Banganga)
Slums
Religious spaces
Govt. Residential
Schools
Hospitals
RG
A A
B B
C
C
D
D
E
E
G
G
F
F
H
H
Low tide boundary
High 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.

Beach
Sewate water treatment ponds
Water harvesting pond
Pathway to walk
along the seafront
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

Beach
Water harvesting pond
Pathway to walk
along the seafront
High tide level
Low tide level
Tamarind groove
Even slop generate low intensity smooth waves.
Uneven slop generates high intensity waves.
LandSea
LandSea
High tide level
Low tide level
Tamarind groove
Even slop generate low intensity smooth waves.
Uneven slop generates high intensity waves.
LandSea
Study of Beaches, Groves
Continental Shelf for Beaches
Beach
Grooves
Conditions for Mangroves to grow
Grooves
Amarson’s
Garden
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

thank you

Nsrcf vision 2020

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