Ingenieur Vol.79 July-Sept 2019 ingenieur 2019 july-sept | Page 22

INGENIEUR Figure 2: PPVC Modularisation Water-proofing works are carried out in the fit-out factory at the wet areas; followed by water ponding tests to check for water tightness. The PPVC modules for each residential unit were also checked for trial fitting in the fit-out factory to ensure that the adjoining modules were well matched before being delivered to site for final installation. On site, upon installation of the PPVC modules, the adjoining PPVC modules’ walls were joined 6 20 VOL VOL 79 55 JULY-SEPTEMBER JUNE 2013 2019 together with in-situ high-strength grout - resulting in composite structure walls. These PPVC modules were also connected to the balance cast in-situ floor structures and lift core & storey shelter walls to derive the tower lateral-load resisting mechanism for wind load. For this project, the total duration of the PPVC module installation was approximately 12 months; the average floor cycle time was six to nine days. The first two to three