2007 Pisco Peru

2007 August 15 magnitude 7,9 earthquake near the coast of Central Perú: analysis and field mission report. Municipality level. Liquefaction Casualty study.

Tambo de Mora, western area

Location details

Location name
Tambo de Mora, western area
Address or location
User defined boundary or administrative area id
965
Geometry (long/lat)
Location precision notes
Location source: GADM
Administration resolution: District
Original survey reference
Is the data aggregated
Yes
USGS Intensity zone
n/a
Soil class
n/a
General soil conditions
Location: comment

Name of the macroseismic intensity scale: -
Total Existing Buildings at time of event: -
Predominant building class: -
Population at time of event: 4682
Families / households at time of event: -
Buildings destroyed / collapsed: -
Collapse typology of the predominant building class: -
Percentage of buildings destroyed / collapsed: -
Remarks: The western area of the town of Tambo de Mora was severely affected by liquefaction. Even though the total area in which liquefaction occurred was of approximately 2km2, the zone of housing affected covered an area of only 200x350m, where liquefied sand was observed inside houses and on the sides of the streets. Most of the structures affected correspondo to 1-2 storeys high reinforced concrete (RC) confined masonry, which suffered settlements from 0,2 to 1,0m relative to street level. The paved road serving these houses was in good condition, with no evidence of severe dmage, which lead to the conclusion that the liquefied stratum corresponds to a shallow layer removed/replaced during the construction of the streets, but left for the foundation of the houses. The street lamps toppled at the base to angles of up to 50º with respect to the horizontal plane. Since each house affected by liquefaction settled relatively uniformly, it may be conclude that these foundations correspond to shallow continous footings. The large settelements observed suggest the occurrence of large cyclic stress rations in the sand layer.
The geom

Survey details

Name
Families / households at time of event - Record 1
Metric
Number of people
Damage level
n/a
Casualty level
n/a
Inventory class
All Buildings
Asset class
n/a
Asset type
n/a
Asset sub type
n/a
Asset form of construction
n/a
Type of damage
n/a
Type of damage - secondary
n/a
Value
Value: status
N/A

Survey details

Name
Population at time of event - Record 1
Metric
Number of people
Damage level
n/a
Casualty level
n/a
Inventory class
All Buildings
Asset class
n/a
Asset type
n/a
Asset sub type
n/a
Asset form of construction
n/a
Type of damage
n/a
Type of damage - secondary
n/a
Value
4682.0
Value: status
OK

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