Post on 02-Jan-2016
Overview of the RADIUS Tool- Simple Damage Estimation Software -
Carlos Villacis, Ph.D.
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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
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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)
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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
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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
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Example of Data Input Process• Shape of target region input as a grid
Example for Kobe city
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Example of Data Input Process• Specify the City Area using Excel Mesh• Input Total Population and Building Counts
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Example of Data Input Process• Input Area ID and Area Name
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Example of Data Input ProcessSpecify the Mesh Weight (building, population distribution)
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Example of Data Input Process• Input Mesh Weight to distribute the building and
population count
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Example of Data Input Process• Specify Ground Characteristics (Soil conditions)
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Example of Data Input Process• Input Local Soil Characteristics
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Example of Data Input Process• Specify Building Inventory by Area• Percentage of 10 Building Classes in each Area
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Example of Data Input Process• Input Building Inventory by Area• Buildings and Population are distributed by Mesh Weight
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Example of Data Input Process• Specify and Enter Scenario Earthquake
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Output Examples• Building Damage Distribution
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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
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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
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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.
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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.
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END
Thank you for your Attention.