The present study examines the effect of sacrificial blast wall on the blast response reduction in hillside buildings. An uncoupled approach is adopted to analyze two commonly observed hillside building configurations, i.e., split foundation (SF) and step-back (SB) subjected to airburst. The effect of the sacrificial blast wall on blast response of hillside buildings is studied for two blast locations, i.e., road at uphill plinth level (UPL) and the same at downhill plinth level (DPL). It is observed that the blast on the uphill side is more damaging for the considered hillside buildings except for 2-story buildings. Further, the sacrificial blast wall of height same as the perimeter wall is observed to be effective only for lower storied hillside buildings subjected to airburst. In addition, the short columns on the uphill side are more vulnerable to the blast irrespective of the presence of the sacrificial blast wall.

Airburst; Blast Response Reduction; Hillside Buildings; Sacrificial Blast Wall; Short Columns; Split Foundation; Step-Back; Uphill Plinth Level.