(c) progress analysis of site prepared materials including complete control tests of all concrete aggregate grading, mix proportions, water content and concrete compression tests. The direct effect of this close control of site work has resulted in economy of materials and an improvement in the standard of work produced by contractors.
131. The present laboratory is housed in a temporary wooden hut at Arsenal Street, but plans were completed for the erection of a new reinforced concrete laboratory with adequate space for the existing apparatus and also for the new equipment on order. The new building has been sited in conjunction with the block casting and prestressing yards at North Point and with them provides a modern concrete precasting organization so necessary for the class of work undertaken by this sub-department.
ROADS OFFICE
Chief Engineer, R. H. Woodman, B.Sc.(Eng.)(Lond.).
General
132. This sub-department is charged with the maintenance of the Colony's 400 odd miles of roadway, road bridges, the formation of new roads, the maintenance of the Kai Tak Airport, runways and hardstandings, and the operation of quarries to produce crushed granite aggregate and premixed bituminous products for the use of the department as a whole. Minor activities embraced by the above include the maintenance of street name plates, traffic signs, white road lines and pedestrian crossings for the Police Department, Traffic Branch, and the responsibility for street lighting and safety rails on kerb lines for the protection of pedestrians and school children.
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