master plan project report on remodeling of storm water drains_bbmp

Presentation

on

Master Plan Project Report

for

Remodeling of Storm Water Drains in Entire BBMP Area, Bengaluru

STUP Consultants Pvt. Ltd.

Bruhath Bengaluru Mahanagara Palike

Salient Features

Bruhath Bengaluru Mahanagara Palike (BBMP) Area - 710 Sq.Km.

(Core Area - 225 Sq.Km.,

Peripheral Area - 485 Sq. Km.)

Total Water Shed / Catchment Area - 1016. 50 Sq.km.

Total Length of SWD in BBMP Area – 840 Km.

(Core Area – 240 Km.,

Peripheral Area - 600 Km.)

(Primary Drain Length – 415 Km. &

Secondary Drain Length – 425 Km.)

Master Plan Project Study Area

Core Area

East Zone

West Zone

South Zone

Bommanahalli

Yelahanka

Dasarahalli

Mahadevapura

RajarajeshwarinagaraStudy Area Map

Reasons for flooding

Change in land use pattern

Flow obstruction due to construction of RCC hume pipe culverts

Inappropriate design approach, construction methodology for structures

and maintenance procedures adopted in newly formed layouts

Development of land in tank bed areas and below drain HFL

Modification of original drain alignment during formation of layouts

Non existence of service roads on either side for laying service lines and

routine maintenance.

Indiscriminate dumping of debris and solid wastes into drains

Dense vegetation growth

Encroachment / Modification of original drain alignment

Lack of access for routine maintenance

Services lines laid inside and across drains

Blockage of inlet/outlet location of water bodies

Water bodies not functioning as retention basins

Sewer lines laid inside and across storm water drains

Sewage flow in storm water drains

Inadequate vent size railway culverts at 60 locations

Site Appreciation

Site Appreciation

Development of land in tank

bed areas & Below drain HFL

DH369, Near Hegganahalli -

Dasarahalli

DH233, Near Bagalagunte,

Dasarahalli

Utility Cables lines laid across SWD at culvert locations is obstruction flow of water

MD 264, Near Ramamurthynagara,

Mahadevapura

BH551, Near Arkere,

Bommnahalli

BH579, Near MICO Factory, Hosur Road

Site Appreciation

Garbage dumped inside SWD

MD 349, Near Marathalli, ORR -

Mahadevapura

Dasarahalli Zone

Near Hongasandra, Bommanahalli

DH332, Kalika Nagara, Dasarahalli

DH 211,211A & B, Near Lageere Main

Road, Dasarahalli

Inadequate Vent Size Culverts

Reasons for flooding

Lakes

Reduction in number of lakes

Blockage due to vegetation growth, dumping of debris at

inlet/outlet location of water bodies

Water bodies not functioning as retention basins

Reduction in holding capacity due to reduction in lake areas,

severe siltation and entry of sewage etc

Non existence of regulatory gate arrangement to regulate

flood discharge

Non existence of interconnectivity between water bodies due

to encroachment / modification of original alignment.

Drain diversion/bypass arrangement made to all water bodies

Condition of Water Bodies in BBMP Area

Chikka Beguru Kere, Bommanahalli ZoneDodda Kalsandra Kere, Bommanahalli Zone

Karihobanahalli Kere, Dasarahalli ZoneNelakdhirenahalli Kere, Dasarahalli Zone

This has led to

Reduction in open spaces

Reduced time of concentration

Reduction in holding capacity of lakes.

Limited land availability for construction of detention

ponds

Reduced space available for improving the drains

More flooding

Deterioration in public health & environmental

sanitation conditions.

Increased cost expenditure etc.

Master Plan for

Remodelling of Storm Water Drains

in Eight Zones of BBMP Area

Project Objectives

To minimise flood runoff.

To ensure free flow of storm water and to minimize flooding incritical flood prone areas.

To improve the health and environmental sanitation conditions inthe surrounding vicinity of SWDs and Water bodies.

To protect the existing waterways and water bodies fromenvironmental degradation.

To improve ground water level by holding rain water in water bodies.

To provide alternate water source in case of emergencies by rainwater harvesting.

Salient Details of Major & Minor Water Shed Catchment Areas

Sl.

No.Zone

Total Water Shed

Catchment Area

(Ha.)

No. of Major

Water Shed

Catchment

Areas

No. of Minor

Water Shed

Catchment

Areas

Total Drain

Length

(Km.)

1 East Zone 10,937 8 134

2252 West Zone 6,366 4 87

3 South Zone 5,553 4 69

4 Rajarajeshwarinagara Zone 15,365 9 118 138.15

5 Dasarahalli Zone 9,505 7 94 92.81

6 Yelahanka Zone 14,235 9 129 104.91

7 Mahadevapura Zone 23,371 11 236 164.24

8 Bommanahalli Zone 16,317 16 300 115.15

Total 101,650 68 1167 840.26

Map showing Storm Water Drains in BBMP area

Summary of Project Findings• Drain reach is in natural condition at many places

• Original alignment modified at certain reaches

• Drain walls & culverts constructed by earst while CMC authorities

are, inadequate vent way not as per standard designs and also in

dilapidated condition in many places

• Drain width drastically reduced at many places and buildings

constructed butting to the drain wall

• Due to change in land use the culverts constructed by earst while

CMC authorities are not matching to the present field requirement.

• Due to non existence of sewerage system, large quantity of raw

sewage flow is observed in open drains.

• The inlet/outlet weir of water bodies is in dilapidated condition and

completely chocked

• Inadequate maintenance is evident

Master Plan Proposals

Rain Gauging Station, Data Generation, Flood control & Monitoring Station

Development of Water Bodies as Holding Ponds

Typical Section of RCC Box Culvert in Place of Pipe Culvert

Typical Section of Bridge with Pile arrangement

Typical Section of slab culvert

Intl. Airport Road, Sahakaranagara

Typical drain cross section

with RCC Retaining wall and Service Corridor

Sewer Line Sewer Line

Property

Boundary Property

Boundary

Property

Boundary Property

Boundary

Typical drain cross section with Earthen embankment,

stone revetment with CC lining and Service Corridor over embankment

Sewer Line Sewer Line

Beautification along side Major Storm water Drains

in Core Area

Sl .No. Name of the ZoneAmount

(Rs. In Crores)

1 East

654.222 West

3 South

4 Bommanahalli 665.14

5 Yelahanka 655.26

6 Dasarahalli 508.99

7 Mahadevapura 914.91

8 Rajrarajeshwarinagara 759.73

Total Estimated Cost 4,158.25

Say 4,160.00

Estimated Cost of SWD Master Plan Project

(As per 2010-11 Price Level)

MASTER PLAN PROJECT COST ALLOCATION

604.36, 16%614.45, 16%

605.32, 16%

470.20, 12% 845.19, 22%

701.82, 18%

ESTIMATED COST FOR STRUCTURAL WORKS FOR DIFFERENT ZONES OF BBMP UNDER SWD MASTER

PLAN PROJECT TOTAL COST = 3,841.34 CRORES

Core Area (W + E+ S)

Bommanahalli Zone

Yelahanka Zone

Dasarahalli Zone

Mahadevpura Zone

Rajarajeshwarinagar Zone

49.86, 16%

50.69, 16%

49.94, 16%

38.79, 12%69.73, 22% 57.90, 18%

ESTIMATED COST FOR NON STRUCTURAL WORKS FOR DIFFERENT ZONES OF BBMP UNDER SWD

MASTER PLAN PROJECTTOTAL COST = 316.91 CRORES


Bommanahalli Zone

Yelahanka Zone

Dasarahalli Zone

Mahadevpura Zone


654.22, 16%665.14, 16%

655.26, 16%

508.99, 12%

914.91, 22%

759.73, 18%

TOTAL ESTIMATED COST FOR STRUCTURAL & NON STRUCTURAL WORKS FOR DIFFERENT ZONES OF

BBMP UNDER SWD MASTER PLAN PROJECTTOTAL COST = 4,158.25 CRORES


Bommanahalli Zone

Yelahanka Zone

Dasarahalli Zone

Mahadevpura Zone


2,569.30, 62%

14.49, 0%266.08, 6%

749.57, 18% 185.00, 5%

373.80, 9%

ESTIMATED COST FOR DIFFERENT WORKS UNDER SWD MASTER PLAN PROJECT

TOTAL COST = 4,158.25 CRORES

Carrying Capacity Improvement

Rehabilitation / Strengthening

Culverts / Bridges

Allied Drain Works

Decentralized STP's

Non Structural Works

Work Programme For Implementation of Storm Water Drain Proposals of Master Plan Project

Sl. Project Estimated Gestation Stage - 1 Stage - 2 Stage - 3 Stage - 1 Stage - 2 Stage - 3

No. Component Cost (1 Year) (3 Years) (3 Years) (3 Years) 1st

Year 2nd

Year 3rd

Year 1st

Year 2nd

Year 3rd

Year 1st

Year 2nd

Year 3rd

Year

(Rs. Crores) % Amount % Amount % Amount % Amount % Amount % Amount % Amount % Amount % Amount % Amount % Amount % Amount % Amount

1.0 Improvement to Carrying

Capacity:

1.1 Desilting & deepening 121.34 5% 6.07 50% 60.67 30% 36.40 15% 18.20 60% 36.40 20% 12.13 20% 12.13 50% 18.20 30% 10.92 20% 7.28 50% 9.10 30% 5.46 20% 3.64

1.2 Widening

a. Earthen bund 238.59 0% 0.00 20% 47.72 40% 95.43 40% 95.43 50% 23.86 25% 11.93 25% 11.93 50% 47.72 30% 28.63 20% 19.09 50% 47.72 30% 28.63 20% 19.09

b. RCC independent walls 559.62 5% 27.98 40% 223.85 30% 167.89 25% 139.90 50% 111.92 30% 67.15 20% 44.77 50% 83.94 30% 50.37 20% 33.58 50% 69.95 30% 41.97 20% 27.98

c. RCC "U" shaped walls 971.62 5% 48.58 40% 388.65 30% 291.49 25% 242.90 50% 194.32 30% 116.59 20% 77.73 50% 145.74 30% 87.45 20% 58.30 50% 121.45 30% 72.87 20% 48.58

d. CRS / SSM masonry

walls

230.12 5% 11.51 40% 92.05 30% 69.04 25% 57.53 50% 46.02 30% 27.61 20% 18.41 50% 34.52 30% 20.71 20% 13.81 50% 28.77 30% 17.26 20% 11.51

e. RCC box drain 369.27 5% 18.46 40% 147.71 30% 110.78 25% 92.32 50% 73.85 30% 44.31 20% 29.54 50% 55.39 30% 33.23 20% 22.16 50% 46.16 30% 27.70 20% 18.46

1.3 Bed protection 78.75 5% 3.94 20% 15.75 50% 39.37 25% 19.69 30% 4.72 50% 7.87 20% 3.15 30% 11.81 50% 19.69 20% 7.87 30% 5.91 50% 9.84 20% 3.94

Sub Total 2569.30 116.54 976.39 810.40 665.98 491.11 287.61 197.66 397.32 250.99 162.08 329.05 203.73 133.20

2.0 Rehabilitation and

Strengthening:

CRS / SSM Wall

Reconstruction

12.90 10% 1.29 50% 6.45 30% 3.87 10% 1.29 50% 3.23 30% 1.94 20% 1.29 50% 1.94 30% 1.16 20% 0.77 50% 0.65 30% 0.39 20% 0.26

CRS / SSM Wall

Restoration

1.5910% 0.16 50% 0.79 30% 0.48 10% 0.16 50% 0.40 30% 0.24 20% 0.16 50% 0.24 30% 0.14 20% 0.10 50% 0.08 30% 0.05 20% 0.03

Sub Total 14.49 1.45 7.24 4.35 1.45 3.62 2.17 1.45 2.17 1.30 0.87 0.72 0.43 0.29

3.0 Culverts and Bridges:

3.1 Utility supports & bridges 5.75 15% 0.86 50% 2.88 20% 1.15 15% 0.86 60% 1.73 25% 0.72 15% 0.43 60% 0.69 25% 0.29 15% 0.17 60% 0.52 25% 0.22 15% 0.13

3.2 Remodeling 244.45 15% 36.67 50% 122.22 20% 48.89 15% 36.67 60% 73.33 25% 30.56 15% 18.33 60% 29.33 25% 12.22 15% 7.33 60% 22.00 25% 9.17 15% 5.50

3.3 Rehabilitation 7.22 15% 1.08 50% 3.61 20% 1.44 15% 1.08 60% 2.16 25% 0.90 15% 0.54 60% 0.87 25% 0.36 15% 0.22 60% 0.65 25% 0.27 15% 0.16

3.4 Railway Culverts 8.67 15% 1.30 50% 4.33 20% 1.73 15% 1.30 60% 2.60 25% 1.08 15% 0.65 60% 1.04 25% 0.43 15% 0.26 60% 0.78 25% 0.32 15% 0.19

Sub Total 266.08 39.91 133.04 53.22 39.91 79.82 33.26 19.96 31.93 13.30 7.98 23.95 9.98 5.99

4.0 Allied Works:

4.1 Boundary stones 1.16 40% 0.47 60% 0.70 0% 0.00 0% 0.00 60% 0.42 20% 0.14 20% 0.14 50% 0.00 30% 0.00 20% 0.00 50% 0.00 30% 0.00 20% 0.00

4.2 Drains in low lying areas 224.69 15% 33.70 60% 134.81 15% 33.70 10% 22.47 60% 80.89 25% 33.70 15% 20.22 60% 20.22 25% 8.43 15% 5.06 60% 13.48 25% 5.62 15% 3.37

4.3 Service roads 187.44 0% 0.00 20% 37.49 30% 56.23 50% 93.72 20% 7.50 30% 11.25 50% 18.74 20% 11.25 30% 16.87 50% 28.12 20% 18.74 30% 28.12 50% 46.86

4.4 Fencing 89.39 0% 0.00 20% 17.88 30% 26.82 50% 44.69 20% 3.58 30% 5.36 50% 8.94 20% 5.36 30% 8.04 50% 13.41 20% 8.94 30% 13.41 50% 22.35

4.5 Detention ponds 16.43 0% 0.00 20% 3.29 50% 8.22 30% 4.93 40% 1.31 30% 0.99 30% 0.99 40% 3.29 30% 2.46 30% 2.46 40% 1.97 30% 1.48 30% 1.48

4.6 Retarding basins 8.46 5% 0.42 40% 3.38 30% 2.54 25% 2.12 50% 1.69 30% 1.02 20% 0.68 50% 1.27 30% 0.76 20% 0.51 50% 1.06 30% 0.63 20% 0.42

4.7 Development of water

bodies

96.40 10% 9.64 30% 28.92 40% 38.56 20% 19.28 30% 8.68 50% 14.46 20% 5.78 30% 11.57 50% 19.28 20% 7.71 30% 5.78 50% 9.64 20% 3.86

4.8 Silt traps 11.68 5% 0.58 50% 5.84 30% 3.50 15% 1.75 60% 3.50 20% 1.17 20% 1.17 50% 1.75 30% 1.05 20% 0.70 50% 0.88 30% 0.53 20% 0.35

4.9 Desilting ramps 5.24 0% 0.00 20% 1.05 30% 1.57 50% 2.62 20% 0.21 30% 0.31 50% 0.52 20% 0.31 30% 0.47 50% 0.79 20% 0.52 30% 0.79 50% 1.31

4.10 Inlet / out weirs 17.57 5% 0.88 50% 8.78 30% 5.27 15% 2.64 60% 5.27 20% 1.76 20% 1.76 50% 2.64 30% 1.58 20% 1.05 50% 1.32 30% 0.79 20% 0.53

4.11 Rain gauge stations 0.45 40% 0.18 60% 0.27 0% 0.00 0% 0.00 60% 0.16 20% 0.05 20% 0.05 50% 0.00 30% 0.00 20% 0.00 50% 0.00 30% 0.00 20% 0.00

4.12 Shifting of sewers 69.47 5% 3.47 50% 34.73 30% 20.84 15% 10.42 60% 20.84 20% 6.95 20% 6.95 50% 10.42 30% 6.25 20% 4.17 50% 5.21 30% 3.13 20% 2.08

4.13 Desilting equipments 18.00 25% 4.50 50% 9.00 25% 4.50 0% 0.00 60% 5.40 20% 1.80 20% 1.80 50% 2.25 30% 1.35 20% 0.90 50% 0.00 30% 0.00 20% 0.00

4.14 Vehicles for vigilance

squad

3.20 10% 0.32 50% 1.60 25% 0.80 15% 0.48 60% 0.96 20% 0.32 20% 0.32 50% 0.40 30% 0.24 20% 0.16 50% 0.24 30% 0.14 20% 0.10

Sub Total 749.57 54.17 287.74 202.55 205.11 140.41 79.27 68.06 70.73 66.79 65.03 58.14 64.27 82.70

5.0 Sewage Treatment

Plants:

Decentralized STP's 185.00 10% 18.50 30% 55.50 40% 74.00 20% 37.00 25% 13.88 60% 33.30 15% 8.33 25% 18.50 60% 44.40 15% 11.10 25% 9.25 60% 22.20 15% 5.55

Sub Total 185.00 18.50 55.50 74.00 37.00 13.88 33.30 8.33 18.50 44.40 11.10 9.25 22.20 5.55

Total Structural = 3784.45 230.56 1459.92 1144.51 949.45 728.84 435.62 295.45 520.65 376.79 247.06 421.12 300.61 227.72

6.0 Non Structural Works:

6.1 DPR and PMC 38.41 100% 38.41 0% 0.00 0% 0.00 0% 0.00 0% 0.00 0% 0.00 0% 0.00 0% 0.00 0% 0.00 0% 0.00 0% 0.00 0% 0.00 0% 0.00

6.2 Rehabilitation and

resettlement

76.83 40% 30.73 60% 46.10 0% 0.00 0% 0.00 60% 27.66 20% 9.22 20% 9.22 50% 0.00 30% 0.00 20% 0.00 50% 0.00 30% 0.00 20% 0.00

6.3 Shifting of other services 56.89 5% 2.84 50% 28.44 30% 17.07 15% 8.53 60% 17.07 20% 5.69 20% 5.69 50% 8.53 30% 5.12 20% 3.41 50% 4.27 30% 2.56 20% 1.71

6.4 Development of green belt 9.60 0% 0.00 20% 1.92 30% 2.88 50% 4.80 20% 0.38 30% 0.58 50% 0.96 20% 0.58 30% 0.86 50% 1.44 20% 0.96 30% 1.44 50% 2.40

6.5 WCE + Admin. 192.07 10% 19.21 30% 57.62 30% 57.62 30% 57.62 25% 14.41 35% 20.17 40% 23.05 25% 14.41 35% 20.17 40% 23.05 25% 14.41 35% 20.17 40% 23.05

Total Non Structural = 373.80 91.20 134.08 77.57 70.96 59.51 35.65 38.92 23.51 26.15 27.90 19.63 24.17 27.16

Total of SWD = 4158.25 321.76 1594.00 1222.08 1020.41 788.35 471.27 334.37 544.17 402.95 274.97 440.75 324.78 254.88

PROJECT PHASING AND INVESTMENT PLAN

PROJECT INVESTMENT PLAN FOR TOTAL MASTER PLAN

PROJECT FOR STRUCTURAL WORKS

TOTAL COST Rs. 3784.45 CRORES

233.87

736.21

436.77

295.49

522.71

376.52

244.36

419.84

297.33

221.35

0.00

100.00

200.00

300.00

400.00

500.00

600.00

700.00

800.00

1st

Year

2nd

Year

3rd

Year

4th

Year

5th

Year

6th

Year

7th

Year

8th

Year

9th

Year

10th

Year

Project Year

Estim

ate

d C

ost (R

s. C

rore

s)

TOTAL PROJECT INVESTMENT PLAN FOR MASTER PLAN


248.50

321.50439.47

272.27

402.67

546.22

334.41

472.42

795.72

325.07

0.00

100.00

200.00

300.00

400.00

500.00

600.00

700.00

800.00

900.00

1st

Year

2nd

Year

3rd

Year

4th

Year

5th

Year

6th

Year

7th

Year

8th

Year

9th

Year

10th

Year

Project Year

Estim

ate

d C

ost (R

s. C

rore

s)

PROJECT INVESTMENT PLAN FOR TOTAL MASTER PLAN

PROJECT FOR NON STRUCTURAL WORKS


91.20

59.51

35.65

38.92

23.51 26.1527.90

19.63 24.17

27.16

0.00

10.00

20.00

30.00

40.00

50.00

60.00

70.00

80.00

90.00

100.00

1st

Year

2nd

Year

3rd

Year

4th

Year

5th

Year

6th

Year

7th

Year

8th

Year

9th

Year

10th

Year

Project Year

Estim

ate

d C

ost (R

s. C

rore

s)

PROJECT INVESTMENT PLAN FOR DIFFERENT WORKS

FOR MASTER PLAN PROJECT


2569.24

14.49

266.08

749.64

185.00 373.80

0.00

500.00

1000.00

1500.00

2000.00

2500.00

3000.00

Carr

yin

g

Capacity

Impro

vem

ent

Rehabilita

tion /

Str

ength

enin

g

Culv

ert

s /

Bridges

Allied D

rain

Work

s

Decentr

aliz

ed

ST

P's

Non S

tructu

ral

Work

s

Type of Work

Estim

ate

d C

ost (R

s. C

rore

s)

Benefits from Implementation

Provision of a properly designed drainage system for areasonably acceptable return period would ensure reduction inflood incidences which in turn reduces flood damages and traffichold ups.

Provision and properly maintained drainage system with controlson sewage connections and solid waste dumping will enhancethe Environmental quality in the form of reduced pollution ofwater bodies and ground water.

Provision and proper maintenance of facilities like detentionponds and retention basins will not only attenuate the peak run-offs but also provide recharge of ground water which will improveground water table.

Provision and proper maintenance of localized sewage treatmentplants and using the treated sewage will reduce the stress onfresh water sources.

Availability of treated sewage will enable more greenery and freshwater lake developed assists reduction in climate change.

Thank you

master plan project report on remodeling of storm water drains_bbmp

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