Earthquake and Severe Wind Exposure and Vulnerability Workshop

Background
The Philippine Institute of Volcanology and Seismology (PHIVOLCS), the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) and Geoscience Australia (GA) are currently engaged in programs to better understand and reduce the risks associated with natural hazards in the Philippines. These programs will build upon existing tools and methods to estimate impact for local natural hazard events.

The present workshop from 12-13 March 2010, Tagaytay City, follows the highly-successful Philippine Earthquake Exposure and Vulnerability Workshop, 14-15 November 2009, held at Clark Airfield, Pampanga, which laid the framework for natural hazard risk assessments in the Philippines. The present workshop will build upon lessons from the previous meeting and develop a basic suite of vulnerability models for common structural types in the Philippines, which can subsequently be used in severe wind and earthquake impact assessments. It is intended that these initial models will be refined and updated through future activities to be discussed on the second day of the workshop.

The key aims for Day One are:
 to review the building stock categorisation schema developed for earthquake at the previous workshop and subsequently circulated for review. In particular, the applicability of the schema to severe wind and later, flood inundation will be considered;
 to review the process developed for generating an exposure database for the Philippines and the associated statistical data requirements. The role of targeted field survey activity will be reviewed;
 to review the progress being made on field survey tool development in support of an exposure database for the Philippines and, in due course, post disaster survey activity;
 to review wind hazards in the Philippines and the process for wind impact assessment;
 to review historically the design and performance of Philippines buildings for severe wind and the implications for wind resistance;
 to develop a benchmark suite of wind vulnerability relationships; and,
 to agree on the out-of-session process to follow for populating the database according to the full building stock schema through a relative ranking approach.

The key aims for Day Two are:
 to review the process for earthquake impact assessment and to reconfirm the nature of the vulnerability models to be developed and implemented;
 to be briefed on the design base shear / seismic performance implications of the historical development of Philippines building regulations for earthquake;
 to develop a benchmark suite of earthquake vulnerability relationships
 to agree on the out-of-session process for populating the database according to the full building stock schema
 to resolve on the next steps for deriving a better understanding of the vulnerability of Philippines buildings to severe wind and earthquake.

Presentations relevant to wind engineering are as follows:
 Updating Tropical Cyclone Climatology in the Philippines by T.A. Cinco
 Highest Wind Pattern in the Philippines by V. Manalo
 Conceptual Typhoon Damage Model by L. Amadore
 Assessing the risk from tropical cyclones by C. Arthur
 Typhoon Damage Scale Model by L. Amadore
 Wind Damage to Tower Structures by A. Abinales
 Design Wind Loads on Lattice Towers in the Philippines by R.Aquino