The project consists of the structural assessment, retrofitting and partial reconstruction of the existing 6-storey GSIS office building located at Concepcion St., Manila City. The building, built during the early 1950s, has a total floor area of about 25,000 m2.

The structure consists of a frame assembly of cast-in-place concrete columns, walls, beams and slabs, and is resting on a driven timber pile foundation.

ACO in association with GHD Pty. Ltd. performed the detailed structural assessment and retrofitting design for the project.