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Task 8.2. Exposure and Vulnerability Assessment
SIRACUSA test site
UNIBO
Bologna, Italy, WP8 KOM, 7 March 2014
Task 8.2. Exposure and Vulnerability AssessmentSIRACUSA test site
IONIANSEA
CTN 1:2000
Dataset structured indxf files in Gauss Boaga coordinates
5 kinds of structures (shape): Annotation, Point, Polyline, Polygon and Multipath.
The main polyline shape information layers are: A - communications system;B - built and other structures;C - water;D – energy-related structures;E – dividing and support elements;F – morphological elements; G- vegetation; H - orography; I - administrative boundaries and other; L - toponyms.
Task 8.2. Exposure and Vulnerability AssessmentSIRACUSA test site
IONIANSEA
Selection of all polyline elements with elevation above sea level less than or equal to 5 m
Class Building types Height and storeysdetection on space imagery(visual recognition on optical images).
Other criteria for local context
Class correspondence with other work
AWooden, timber, Beach or sea front light constructions
Individual, 1 storey,Rarely 2 storeys for beach constructions
Flats roof, steel sheetsSmall to very small surfacesExtended surfaces in case of beach activities (restaurants, clubs)
Flat roofIsolated of close to each other, on beaches or coast berms, can have parking behind
Class A Leone 2006
BBrick not reinforced, cement mortar walls,Fieldstone, masonry
1 or 2 storeysFlat or slope roofs, steel roofs, No chimneys in generalLittle extension or surface
Small garden in front or around
Class B Leone 2006
C1Brick with reinforced column and masonry filling, in general individual buildings, villas
1 or 2 storeysTiles or slates, flat roofRectangular or square or more complex but small surface
Class C Leone 2006
C2Old industrial and residential buildings, walls made of lava blocks alternating with clay bricks
1 to 3 storeysCollective building
Not possibleGarden and swimming pools
Class C Leone 2006
D1Residential or commercial building concrete not reinforced, large villas or collective building
1 to 3 storeysCollective building
Flat roofs Tiles with slope roofBalcony or terraces visibleLarge extension
Class D Leone 2006
E1Building in RC Residential or collective structures or offices, parking, schools
3 storeysFlat roof or slope roofChimneysAir conditioning equipment visible
Sidewalk and parking along buildings
Class E Leone 2006
E2Building in RCResidential or collective structures or offices, parkings, schools, towers
More than 3 stories
Generally flat roof with equipment on top (air conditioning, water, etc).ChimneysTerraces or balconies visible
GHarbour and Industrial building, reinforced concrete, steel frames, hangar
undifferentiatedSteel sheetsFlat roofs with multiple equipmentLarge roof windows
Task 8.2. Exposure and Vulnerability AssessmentSCHEMA Table of Building Types
Task 8.2. Exposure and Vulnerability AssessmentSCHEMA - Vulnerability classifications
Polyline information layer B - built and other structures
IONIANSEA
ABCDEFG
Vulnerability classes
Task 8.2. Exposure and Vulnerability AssessmentPTVA-3 - Table of attributes
Building vulnerability:
converted to a scale from 1 to 5
Task 8.2. Exposure and Vulnerability AssessmentPTVA-3 - Vulnerability classifications
Polyline information layer B - built and other structures
IONIANSEA
Building Vulnerability
5 (most vulnerable) 4321
Task 8.2. Exposure and Vulnerability AssessmentSCHEMA damage matrix
Damage level Class A Class B Class C Class D Class E1
No damage D0 0 m 0 m 0 m 0 m 0 m
Light damage D1 0 – 1,8m 0 – 2m 0 – 2,5m 0 – 2m 0 – 3m
Important damage
D2 1,8 – 2,2m 2 – 3m 2,5 – 4m 2 – 4,5m 3 – 6m
Heavy damage D3 2,2 – 2,6m 3 – 4m 4 – 6m 4,5 – 6,5m 6 – 9,5m
Partial collapse D4 2,6 – 3,8m 4 – 5m 6 – 8m 6,5 – 9m 9,5– 12,5m
Total collapse D5 > 3,8m > 5m > 8m > 9m > 12,5m
Valencia, N., Gardi, A., Gauraz, A., Leone, F., Guillande R.: New tsunami damage functions developed in the framework of SCHEMA project: application to European-Mediterranean coasts, Nat. Hazards Earth Syst. Sci., 11, 2835–2846, 2011
Damage level = class of vulnerability x water column
Task 8.2. Exposure and Vulnerability AssessmentSIRACUSA test site
SCHEMA – Damage classification
IONIANSEA
shanty town
big harbour
small harbour
Damage level
Task 8.2. Exposure and Vulnerability AssessmentSIRACUSA test site
PTVA-3 – Damage classification
IONIANSEA
Relative Vulnerability Index:
Ex= Exposure
Prot=Protection factors
Class of RVIMinor: from 1 to 1.8 Moderate: from 1.8 to 2.6Average: from 2.6 to 3.4 High: from 3.4 to 4.2 Very high: from 4.2 to 5
Dall’Osso, F., Maramai, A., Graziani, L., Brizuela, B., Cavalletti, A., Gonella, M., Tinti, S.: Applying and validating the PTVA-3 Model at the
Aeolian Islands, Italy: assessment of the vulnerability of buildings to tsunamis, Nat. Hazards Earth Syst. Sci., 10, 1547–1562, 2010.
IONIANSEA
Task 8.2. Exposure and Vulnerability AssessmentSIRACUSA test site
PTVA-3 – Damage classification
shanty town
big harbour
small harbour
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