Cost Estimation for Retrofitting Multi-Storey Building Structures Using the Concrete Jacketing Method

Shinta Berlinda Wulandari; Hanie Teki Tjendani; Buntara Sthenly Gan

doi:10.55927/fjst.v4i12.353

Authors

Shinta Berlinda Wulandari Universitas 17 Agustus 1945 Surabaya
Hanie Teki Tjendani Univeritas 17 Agustus 1945 Surabaya
Buntara Sthenly Gan Nihon University

DOI:

https://doi.org/10.55927/fjst.v4i12.353

Keywords:

Concrete Jacketing, Cost Estimation, Reinforced Concrete Building, Seismic Retrofit, Structural Capacity

Abstract

This study investigates the effectiveness of concrete jacketing in increasing the structural capacity of a multi-storey reinforced concrete building and estimates the associated retrofit cost. The existing structure was evaluated using static nonlinear pushover analysis based on ASCE 41-17 provisions to identify seismic deficiencies. Concrete jacketing was then applied to critical columns to enhance structural performance. Post-retrofit analysis shows a significant improvement in lateral load capacity and overall seismic behavior. Retrofit cost estimation was conducted based on retrofit work volumes and standard unit prices. The results indicate that concrete jacketing provides an effective and economically feasible solution for strengthening existing multi-storey buildings in seismic regions.

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