View of factory from Jurong Bird Park
allowing a continuous link between the spinning/weaving and dyeing/finishing sections at the rear.
In the spinning/weaving mill, the service core comprising air-condition- ing cabins, boilers, transformers, toi- lets, and engineers and maintenance rooms, is housed along the front of the factory. This layout will be mirrored in the second phase extension without disturbing the existing production plants.
Rows of tunnels spaced at regular intervals beneath the reinforced con- crete floor collect fluff, manufacturing waste and return air and carry them to filtering plants in the air-conditioning cabins for re-circulation. Air-con- ditioning supply ducts are left exposed under the ceiling and are un-insulated for economical reasons.
A series of air conditioning cabins, to give desirable temperatures and humidity control, are located along the service strip well separated from
the production area. Fresh air intake grilles controlled by movable dampers are situated at the high level windows of the external walls. Exhaust air into the atmosphere is through exhaust grilles above the flat roof. Short-circuit of air movements is thus minimised.
Floors are poured concrete, trowel- led to a smooth and durable finish. Underground floor drains, running along the perimeter of the plants, collect the highly coloured effluents from the dyeing/finishing mill and are connected to a pre-treatment tank for final disposal of treated trade waste into the public sewer.
The factory flat roof, supported by main and secondary steel trusses, is made up of Klip-lok galvanised steel roof decking, topped with 24in. thick Cheecolite lightweight insulating con- crete. Bituminous felts and Flinkote roof finish complete the waterproof ing. The built-up roof yields a U-value of 0.135 to comply with the air
Part of spinning/weaving mill
conditioning requirement.
Extensive use of precast concrete grilles is made in the dyeing/finishing mill for maximum cross ventilation. In this part of the factory the structure is of reinforced concrete portal frames and the jack-roof above admits a high degree of natural light. Mechanical extract fans located at strategic points facilitate the movements of air changes.
In the whole factory only the raw material cotton warehouse, which is highly susceptible to fire break, is provided with a sprinkler system for fire protection.
Structure
The structure of the factory is divided into two sections: a) a steel structural frame supporting a built-up flat roof of 281,400 sq. ft. area for the spinning/weaving mill, administration office, canteen, storage area and boiler house; and b) a multi-bay reinforced
Far East BUILDER, December 1969
31