Implementation of Knock-Down Precast Concrete System for Earthquake-Resilient School Designs

Earthquakes are among the deadliest natural disasters, causing extensive infrastructural damage around the world. This study aims to design earthquake-resistant schools using the knock-down precast concrete system RISHA (Rumah Instan Sederhana Sehat), offering flexibility, ease of assembly, and rapid deployment for post-disaster reconstruction. The methodology involves designing two school units (108 m² and 132 m2) and performing a comparative analysis of construction time and costs between RISHA and conventional methods. Each unit comprises 910 components, costing $3,375 (20 days) and $4,005 (23 days), respectively. Results show that RISHA saves approximately 7.6% in costs and reduces construction time by 15–17 days, demonstrating its potential as an efficient solution for post-disaster educational facilities