Strengthening of Nurul Ilmi Mosque with Concrete Jacketing

—Nurul Ilmi moesque is one of building for worship
located in University of Andalas. In 2008 the new building of
mosques was designed using previous indonesian seismic code, SNI
1726: 2002. The right side of the new mosque was constructied in
2009. Due to the limitation of the budget, the construction of the left
side of the mosque was continued on 2014. However, a new
indonesian seismic code SNI 03-1726-2012 was established and the
designed mosque should be revised based on the new indonesian
seismic code. Since the right side of the mosque was designed by
using the old seismic code (SNI 1726: 2002), so it is necessary to
evaluate the strength of the structure by using the seismic code (SNI
03-1726-2012). Based on the analysis results, it was found that the
right side of the building structure is not strong enough to resist the
combination loads acting on the structure, especially the earthquake
load. Therefore, it is necessary to strengthening (retrofitting) the
right side of the building structure before connecting with the left
side of the building. In this study, the concrete jacketing method
was used to the retrofit the column structure. The results show that
the jacketing method is effective to increase the capacity of the
column and reduce internal forces and displacements that occur in
the structure of the mosque, so the structure can resist the working
loads.