(6) Surveys for repairs of typhoon damage at Sha Tin earth bund, Tai Po Kau pier and ex-naval camber seawall.
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(7) Detailed sounding surveys at harbour mooring buoys A and A5 Kai Tak, Wan Chai, Holland Street, Whampoa Dock, Channel Rock light, Cheung Chau Island, Peng Chau Island, Tai Po Harbour, Fat Tong Mun channel and Aberdeen cross harbour pipeline.
(8) Progress surveys on public spoil dumps at Hung Hom, Cheung Sha Wan, Chai Wan, Sandy Bay, Silver Mine Bay and Central reclamation stages II and IV.
(9) Setting out of boreholes for all site investigation work as detailed in marine boring above.
(10) Current measurements in an area off Taikoo Dock and float tests at Gin Drinker's Bay.
(11) Echo sounding surveys for submarine pipeline and cable between Kennedy Town and Green Island, submarine pipeline between Chau Kung Island and Peng Chau, submarine pipeline between Silver Mine Bay and Sandy Bay.
(12) Survey of pier envelope area for issuing leases at Tai Tam filling station, Navy Street sea terminal and Tsing Yi quarry pier.
MATERIALS TESTING LABORATORY
8.25. The number of tests on soil and other building materials carried out during the year totalled 24,544 and comprised the following:
(1) Concrete tests
(2) Cement tests
(3) Aggregate tests
(4) Metal tests
(5) Bitumen and bituminous mixture tests
(6) Soil tests
(7) Miscellaneous tests
No. of Tests
9,589
510
2,487
3,136
924
7,784
114
8.26. The above tests included 3,859 tests for private firms, providing a revenue of $42,711.
8.27. New equipment acquired included the attrition machine for aggregates, one more triaxial cell for testing 4" dia. soil samples and a set of 50-ton hydraulic pump and jack for testing C.I. gully gratings.
8.28. A report on temperature changes in road pavement was completed.
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