The existing building consisted of basement, ground, 1st, 2nd, 3rd, 4th and part-5th ï¬‚oors. The building comprised two parts, namely, a Victorian section and a 6-storey side extension built in 1975. The extension was added when the building was converted to an embassy building. The Victorian section consists of load-bearing masonry stud walls and timber ï¬‚oors except that the load bearing masonry walls between basement and ground have, in general, been replaced with reinforced concrete frames.
The work involved major alterations to the building structure including the introduction of steel transfer frames, a new 5th storey and removal and re conï¬guration of major load-bearing walls throughout the building. In order to accommodate the new ï¬fth ï¬‚oor extension the existing ï¬‚oor roofs/ ï¬‚oors were demolished and replaced with a new steel and timber structure. A new lift serving 6 storeys was also introduced into the building. This comprised a steel sway frame structure supported on a reinforced concrete lift pit and necessitated alterations to the ï¬‚ oors up through the building.