Thesis Ppt

1

School of Building Science & TechnologyCEPT UniversityKasturbhai Lalbhai CampusNavrangpura, Ahmedabad – 380009Phone: 91 79 26302740 Fax: 91 79 26302075Website: www.cept.ac.in Email: [email protected], [email protected]

Final Thesis presentation on BUILDING VULNERABILITY

ASSESSMENT FOR TROPICAL CYCLONES IN

JAMNAGAR

2

School of Building Science & TechnologyCEPT UniversityKasturbhai Lalbhai CampusNavrangpura, Ahmedabad – 380009Phone: 91 79 26302740 Fax: 91 79 26302075Website: www.cept.ac.in Email: [email protected], [email protected]

Final Thesis presentation on BUILDING VULNERABILITY

ASSESSMENT FOR TROPICAL CYCLONES IN

JAMNAGAR1 INTRODUCTION

2 METHODOLOGY

3 DATA COLLECTION

4 DATA ANALYSIS

5 RESULTS & RECOMMENDATIONS

3

57% of the land is vulnerable to EARTHQUAKES

8% of the land is vulnerable to CYCLONES

5% of the land is vulnerable to RIVER FLOODS

Madumita Sadagopan, Faculty of Technology. C.E.P.T University

“A serious disruption of the functioning of a community or a society involving widespread human, material, economic or environmental losses and impacts, which exceeds the ability of the affected community or society to cope using its own resources.”

DISASTER : (As per the U.N.I.S.D.R)

LIFEPROPERTY

BUILDINGS

LIVELIHOOD

1

2

3

4

5

INTRODUCTION

THE DISASTER PRONE INDIAN SUB-CONTINENT

4


“A serious disruption of the functioning of a community or a society involving widespread human, material, economic or environmental losses and impacts, which exceeds the ability of the affected community or society to cope using its own resources.”

1

2

3

4

5

CYCLONIC DISASTERS IN INDIA THE DISASTER PRONE INDIAN SUB-CONTINENT

5


AIM

OBJECTIVE

1

2

3

4

5

CYCLONIC DISASTERS IN INDIA THE DISASTER PRONE INDIAN SUB-CONTINENT

6


1

2

3

4

5

METHODOLOGY ADOPTED

DATA

COL

LECT

ION

& PR

ELIM

INAR

Y AN

ALYS

IS

SECONDARY DATA

PRIMARY DATA COLLECTION & DATA PREPARATION

ANALYSIS OF PRIMARY DATA

7


1

2

3

4

5

METHODOLOGY ADOPTED

DATA

ANA

LYSI

S &

REPR

ESEN

TATI

ON DIGITIZATION & SPATIAL IMPLEMENTATION OF DAMAGED BUILDINGS WITHIN J.M.C EXTENT

RESU

LTS

DERI

VED

FROM

SPA

TIAL

LAY

OUTS

PREPARATION OF MAPS

8


1

2

3

4

5

DATA COLLECTION for WIND HAZARD ASSESSMENT

ZONE III - HIGH DAMAGE RISK ZONE (As per B.M.T.P.C)

Wind speed 47m/s Very heavy damage to Kachcha and Semi Pucca Buildings.Boundary Walls: OverturnIndustrial Buildings: Walls fail, whole roofs may fly off – I.M.D

“The combination of the probability of an event and its negative consequences”

“A methodology to determine the nature and extent of risk by analyzing potential hazards and evaluating existing conditions of vulnerability that together could potentially harm exposed people, property, services, livelihoods and the environment on which they depend.”

RISK: (As per the U.N.I.S.D.R)

RISK ASSESSMENT: (U.N.I.S.D.R)

WIND RISK ZONATION AS PER B.M.T.P.C

9


1

2

3

4

5

DATA COLLECTION for WIND HAZARD ASSESSMENT RISK DETERMINATION CONTAINS

HAZARD RISK LOCATIONAL RISK

TERRAIN CHARACTERISTICS FREQUENCY

INTENSITY – WIND SPEED TERRAIN ELEVATION

EXPOSURE SET

OBTAINED FROM I.M.D e-AtlasU.N.E.P – G.R.I.D (Global Resource Information

Database)

STORM TRACKS INCIDENT ON JAMNAGAR

10


1

2

3

4

5

DATA COLLECTION - RISK ASSESSMENT

CYCLONE TRACKS ACROSS GUJARAT

Low pressureDepressionC.SS.C.SV.S.C.S

RISK ASSESSMENT CONTAINS

HAZARD RISK

FREQUENCY

INTENSITY – WIND SPEED

Obtained from I.M.D e-AtlasU.N.E.P – G.R.I.D (Global Resource Information Database)

STORM TRACKS INCIDENT ON JAMNAGAR

RETURN PERIOD

“Cyclone return periods are the frequency at which a certain intensity or category of cyclone can be expected within 75 nm (86 statute miles) of a given location. The return periods are generally designated in years.”

Return Period (yrs)

25 50 100 200

Wind speed (m/s) 33-39 39-44 44-50 50-55

11


1

2

3

4

5

DATA COLLECTION for RISK ASSESSMENT

Railway Stn.

Police Line

LOCATIONAL RISK

NEARNESS TO COAST

TERRAIN CHARACTERISTICS & ELEVATION

RISK ASSESSMENT CONTAINS

Digital topographic data obtained from S.R.T.M V 4.1 – 90m resoultion (Shuttle Radar Topography

Mission) overlaid on spatial layout of J.M.C to obtain topography elevation.

12


1

2

3

4

5


Darbargarh

Fort

7 Rasta Circle

Khambalia gate

Dist. Jail

13


1

2

3

4

5

DATA COLLECTION for DETERMINING RISKRISK ASSESSMENT CONTAINS

EXPOSURE SET containing BUILDINGS

Selection of REPRESENTATIVE TRANSECTS to obtain BUILDING SAMPLES by strata and

sampling at random

GEOPSY method

SOCIO-

ECONOM

IC CLASSES

L.I.G

SLUM

M.I.G

H.I.G

•Vulnerability assessment of an urban environment• “Earning capacity of the dweller determines the dwelling type”.• Determining socio-economic classes in J.M.C to define transects / geopsies.• Transects Chosen – Expert opinion & reconnaissance surveys : 25 IN TOTAL

CHARACTERIZED by BUILDING TYPOLOGIES

1 RCC on Brick & Concrete 8 CGI/ACC on Earth2 RCC on Stone 9 CGI/ACC on Biomass3 Tiles on Brick & Concrete 10 Biomass on Earth4 Tiles on Stone 11 Biomass on Biomass5 Tiles on Earth 12 Others on Others6 Tiles on Biomass 13 Stone on Stone7 CGI/ACC on Brick &

Concrete14 CGI/ACC on stone15 Biomass on Bricks

Source : Census 2001

Based on ROOF / WALL type

14


1

2

3

4

5


GEOPSY method

GALAXI PARK – M.I.G

BEDI – SLUM

TRANSECT

CHAR’TICS

AVG. HOUSI

NG DENSIT

Y

HOUSING TYP.

PREVELENT

AVG. NO.

STOREYS

SPATIAL

SPREAD OF

HOUSES

15



1

2

3

4

5

SATARVA VADO– L.I.G

JAI COOP. SOC. – H.I.G

TRANSECT

CHAR’TICS

AVG. HOUSI

NG DENSIT

Y

HOUSING TYP.

PREVELENT

AVG. NO.

STOREYS

SPATIAL

SPREAD OF

HOUSES

16


1

2

3

4

5

DATA COLLECTION for DETERMINING RISKRAPID VISUAL SCREENING OF BUILDING SAMPLES

RISK ASSESSMENT CONTAINSEXPOSURE SET containing

BUILDINGS


sampling at random

GEOPSY method

RAPID VISUAL SCREENING OF BUILDINGS

SAMPLING 10 HOUSES AT RANDOM IN THE GIVEN TRANSECT FOR RAPID VISUAL SCREENING

17


1

2

3

4

5

DATA COLLECTION for DETERMINING RISKRAPID VISUAL SCREENING OF BUILDING SAMPLES

18


1

2

3

4

5

DATA ANALYSIS for DETERMINING RISKRISK DETERMINATION CONTAINS



sampling at random

GEOPSY method

RAPID VISUAL SCREENING

PRELIMINARY ANALYSIS OF BUILDING SAMPLE

TYPOLOGY DISTRIBUTION (%)

VULNERABILITY ANALYSISGEO-REFERENCING DATA

SURVEYED (Preparing Data base of building elements

surveyed)DAMAGE MODELLING

SPATIAL IMPLEMENTATION OF DAMAGE MODEL

BUILDING VULNERABILITY ASSESSMENT

19


1

2

3

4

5

PREPARING SPATIAL DATA - EXPOSURE SETGEO- REFERENCING SURVEYED DATA

REFERENCING BLDG. ELEMENTS SPATIALLY

SPATIAL LAYOUT PROVIDED BY REMOTE SENSING SATELLITE IMAGERY

(TRANSECTS + HOUSES SURVEYED)Digital Globe 2010 imagery

DIGITIZING

DIGITIZING TRANSECT DIGITIZING SURVEYED HOUSES

DEMARCATING TRANSECT AREA

REFERENCED BUILDING ELEMENTS APPENDED ONTO A DATABASE IN G.I.S ENABLED PLATFORM

20


1

2

3

4

5

SPATIAL ANALYSIS of BUILDING ELEMENTS

USING PROXIMITY FUNCTIONS in G.I.S for BUFFER ZONE GENERATION

RESIDENTIAL AREAS DERIVED

SPATIAL LAYOUT PROVIDED BY REMOTE SENSING SATELLITE IMAGERY

(TRANSECTS + HOUSES SURVEYED)

Digital Globe 2010 imagery

DIGITIZING

The transects (25) from where building samples were derived are assumed representative for the social strata they signify varying by their location within J.M.C (Core / Periphery).

21


1

2

3

4

5

DATA ANALYSIS - DAMAGE MODELLING DAMAGE MODELLING CONTAINS



sampling at random

GEOPSY method

RAPID VISUAL SCREENING

PRELIMINARY ANALYSIS OF BUILDING SAMPLE

TYPOLOGY DISTRIBUTION (%)

VULNERABILITY ANALYSISGEO-REFERENCING DATA

SURVEYED (Preparing Data base of building elements

surveyed)DAMAGE MODELLING

SPATIAL IMPLEMENTATION OF DAMAGE MODEL

BUILDING VULNERABILITY ASSESSMENT

22


1

2

3

4

5


RISK ASSESSMENT CONTAINSEXPOSURE SET containing

BUILDINGS


sampling at random

GEOPSY method

SOCIO-

ECONOMIC CLASSES

L.I.G

SLUM

M.I.G

H.I.G

•Vulnerability assessment of an urban environment• “Earning capacity of the dweller determines the dwelling type”.• Determining socio-economic classes in J.M.C to define transects / geopsies.

Based on & Types ofPRELIMINARY ANALYSIS OF BUILDING SAMPLE

RAPID VISUAL SCREENING OF BUILDINGS

VULNERABILITY ANALYSIS

BUILDING TYPOLOGY DISTRIBUTION & GENERATION OF BUFFER ZONES

23Madumita Sadagopan, Faculty of Technology. C.E.P.T University

DISASTER – “A serious disruption of the functioning of a community or a society involving widespread human, material, economic or environmental losses and impacts, which exceeds the ability of the affected community or society to cope using its own resources.” – U.N.I.S.D.R

HAZARD RISK

BUILT ENVIRONMENT

RESISTANCE

COPING CAPACITY OF

COMMUNITY VULNERABILITY

Madumita Sadagopan, S.B.S.T, C.E.P.T University

24

Documents

Thesis Ppt