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Abstract. Regional seismic risk assessment is paramount in
earthquake-prone areas, for instance, to define and implement prioritisation
schemes for earthquake risk reduction. As part of the Indonesia School Programme to Increase Resilience (INSPIRE), this paper
proposes an ad hoc rapid-visual-survey form, allowing one to (1) calculate the
newly proposed INSPIRE seismic risk prioritisation index, which is an
empirical proxy for the relative seismic risk of reinforced concrete (RC)
buildings within a given building portfolio; (2) calculate the Papathoma
Tsunami Vulnerability Assessment (PTVA) index, in any of its variations; (3) define one or more archetype buildings representative of the analysed
portfolio; (4) derive detailed numerical models of the archetype buildings,
provided that the simulated design is used to cross-check the model assumptions.
The proposed INSPIRE index combines a baseline score, calibrated based on
fragility curves, and a performance modifier, calibrated through the
analytic hierarchy process (AHP) to minimise subjectivity. An attempt to
define a multi-hazard prioritisation scheme is proposed, combining the
INSPIRE and PTVA indices. Such a multi-level framework is implemented for 85
RC school buildings in Banda Aceh, Indonesia, the most affected city by
the 2004 Indian Ocean earthquake–tsunami sequence. As part of the proposed
framework, two archetype buildings representative of the entire portfolio
are defined based on the collected data. Their seismic performance is
analysed by means of non-linear static analyses, using both the analytical
simple lateral mechanism analysis (SLaMA) method and numerical finite-element pushover analyses to investigate the expected plastic mechanisms and
derive displacement/drift thresholds to define appropriate damage states.
Finally, non-linear dynamic analyses are performed to derive fragility
curves for the archetype buildings. This paper demonstrates the
effectiveness of the INSPIRE data collection form and proposed index in
providing a rational method to derive seismic risk prioritisation schemes
and in allowing the definition of archetype buildings for more detailed
evaluations/analyses.

Earthquake on July 2, 2013, destroyed several buildings in Aceh Tengah district and Bener Meriah district of Aceh Province. This earthquake gives Aceh government a clue that the seismic hazard map must become the reference in development plan in future. To respond this idea, we conduct the research and try to estimate the amplification factor for developing seismic hazard maps of those districts. This study aims to determine the average shear wave velocity up to the depth of 30 meters (Vs30) and the amplification factor of Aceh Tengah district and Bener Meriah district, to build the seismic hazard map of both districts. In this study, we use the MASW (Multi-Channel Analysis of Surface Waves) with 24 geophones in the frequency of 10 Hz at 10 locations to determine the Vs30 beneath the surface. The soil and rock classification from ASCE 2010 and SNI 1726:2012 used to classify the soil/rock based on Vs30 and calculate the predicted amplification factor using the Borcherdt Eeri equation. The result of this study reveals that the range of Vs30 in the study area is 76 m/s – 308 m/s. The loosest sediment has 76 m/s located at point 2 in Aceh Tengah district. The shear wave velocity of 76 m/s classifies as soft soil (SE). Based on the calculation, the pyroclastic deposit and sediment in the basin of the study area will be amplified the seismic wave in the range of 2.9 to 3.3 times. In the future, we suggest conducting another geophysical survey to determine the correct amplification factor to improve the quality of seismic hazard map.