Overview of the RADIUS Tool- Simple Damage Estimation Software -

Carlos Villacis, Ph.D.

Carlos Villacis Overview of Simple Damage Estimation Software 2

Software Purposes• To facilitate preliminary estimation of

earthquake damage in developing countries

• To be used by city administrators and general public, not for professional purposes

• To assist in decision making

• To raise awareness of

earthquake risk

Carlos Villacis Overview of Simple Damage Estimation Software 3

Software CharacteristicsGoal: To make it as useful and accesible as possible

• Widely available platform (runs on MS-Excel)

• Simple, user-friendly– Help Function/User Instructions are included– Narrated Demonstration Video is included

• NOT a GIS(Geographic Information System) type of program– A GIS Sample is added for comparison (GIS is a very useful risk-

assessment tool)

Carlos Villacis Overview of Simple Damage Estimation Software 4

Input Data

Program uses commonly available city information

• Shape of target region (entered as a grid)• Population and its distribution• Building Inventory and its distribution• Ground Characteristics (Soil conditions) • Lifelines information• Choice of Scenario Earthquake and its parameters

Carlos Villacis Overview of Simple Damage Estimation Software 5

Output

• Ground Shaking Distribution (PGA or MMI Intensity)

• Building damage

• Lifelines damage

• Human Impact (number of deaths and injuries)

• Summary Tables and Thematic Maps showing the results

Carlos Villacis Overview of Simple Damage Estimation Software 6

Example of Data Input Process• Shape of target region input as a grid

Example for Kobe city

Carlos Villacis Overview of Simple Damage Estimation Software 7

Example of Data Input Process• Specify the City Area using Excel Mesh• Input Total Population and Building Counts

Carlos Villacis Overview of Simple Damage Estimation Software 8

Example of Data Input Process• Input Area ID and Area Name

Carlos Villacis Overview of Simple Damage Estimation Software 9

Example of Data Input ProcessSpecify the Mesh Weight (building, population distribution)

Carlos Villacis Overview of Simple Damage Estimation Software 10

Example of Data Input Process• Input Mesh Weight to distribute the building and

population count

Carlos Villacis Overview of Simple Damage Estimation Software 11

Example of Data Input Process• Specify Ground Characteristics (Soil conditions)

Carlos Villacis Overview of Simple Damage Estimation Software 12

Example of Data Input Process• Input Local Soil Characteristics

Carlos Villacis Overview of Simple Damage Estimation Software 13

Example of Data Input Process• Specify Building Inventory by Area• Percentage of 10 Building Classes in each Area

Carlos Villacis Overview of Simple Damage Estimation Software 14

Example of Data Input Process• Input Building Inventory by Area• Buildings and Population are distributed by Mesh Weight

Carlos Villacis Overview of Simple Damage Estimation Software 15

Example of Data Input Process• Specify and Enter Scenario Earthquake

Carlos Villacis Overview of Simple Damage Estimation Software 16

Output Examples• Building Damage Distribution

Carlos Villacis Overview of Simple Damage Estimation Software 17

Tool Applications

• Understanding of cities’ earthquake risks • Estimation of impact of past well-known

earthquakes• Estimation of impact of any number of

possible future earthquakes• Delineation of planning policies by decision

makers• Education and risk awareness of the public

Carlos Villacis Overview of Simple Damage Estimation Software 18

A Few Technical Notes

Hardware requirements:• CPU: Pentium 100 MHz or above

• Memory: 16 MB RAM minimum

Software requirements:• OS:Windows 95/98/Me or later

• MS-Excel 97/2000 or later

Carlos Villacis Overview of Simple Damage Estimation Software 19

Distribution• 3000 copies prepared

CD-ROM including TOOLS and RADIUS city reports.

Distributed FREE to city administrators of cities worldwide by UN-ISDR and RADIUS institutes.

Carlos Villacis Overview of Simple Damage Estimation Software 20

A Word of Caution

• The program uses simplified methodologies to enable speedy calculations and to maintain easy- to- use features.

• The program outputs may be used for preliminary earthquake damage estimation only.

• It should not be used for a detailed and exact site - specific earthquake analysis or detailed Micro-zonation.

• Experts in the respective fields should be consulted for a precise estimation of loss values.

Carlos Villacis Overview of Simple Damage Estimation Software 21

END

Thank you for your Attention.