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tions and Damar Minyak (Malayan light heavy hardwood) for built-in cup- boards and partitions at the public foyer. All internal floors are finished with in. thick teak parquet and ex- ternal floors and staircases are finished with mosaic.
The architect designed all interior furnishings and fixed furniture. All loose furniture was purchased by the Singapore Telephone Board on the
advice of the architect.
Services
The building is fully air-condition- ed by an air water system with indivi- dual single-zone air handling units ser- ving each floor. The central station refrigeration plant comprises two 95TR Hermetic compressor/condensor chilling units, duplicate chilled water and condenser water pumps, all locat- ed on the lower ground floor main plant room. The two induced draught vertical discharge cooling towers are located on the roof.
The individual single-zone air hand- ling units are used to provide 24-hour air-conditioning to each of the lower floors which accommodate the tele- phone equipment; two similar units located in the roof plant room serve the three upper floors. This allows a high degree of flexibility in tempera- ture and humidity control, essential for the equipment.
From the air-handling units, con- ditioned air is delivered into the spaces by means of overhead ductwork con- cealed within the coffered ceiling. All air inlet and extract points are fitted with air diffusers of special design to harmonize with the timber ceiling panels. Wherever possible, air transfer louvres and grilles are used to control the direction of air flow within the in- ternal areas.
The ground floor is air-conditioned independently using a 22TR water cooled packaged unit with its asso- ciated cooling tower located nearby.
Unit air-conditioners are provided for special 'sealed areas' such as polish- ing rooms to guard against the transfer of air-borne dust particles from these areas to those accommodating the ex- change switchgear.
The operation of the entire air- conditioning system is fully automatic and controlled from a central control panel situated in the main plant room. Additional local subsidiary control panels are provided for isolation pur- poses.
Electricity supply, at 415 volts, is
Rear elevation
Far East BUILDER, February 1970