Q46
and is of similar construction. Overflows, to deal with a flood water of 4.6″ of rain per hour on the catchment area, have been provided generally at stream crossings. A pathway of a minimum width of 12′-0″ for a length of 3,500 feet, and thereafter of 10′-0″ width, was constructed throughout, and this has been carried over the overflows by means of reinforced concrete decking. Sandtraps, provided with washout pipes, were constructed in the invert, usually at stream crossings.
Owing to the serious water situation due to abnormally low rainfall this summer a temporary conduit, to collect water from the principal stream of the second section of this catchwater and about 5,500 feet in length, was constructed by the maintenance contractors Messrs. Kin Lee & Co. Work commenced early in August and was completed by the end of October when the water was diverted into the first section of the catchwater whence it discharged into the Jubilee Reservoir. This conduit was designed to collect a maximum of five million gallons per day and about 96 million gallons had been collected by the end of the year. The cost of this work was $10,999.63.
Second Section-A contract for this section was signed on 6th September with Messrs. Sang Lee & Co. for $231,500.10. Good progress had been made by the end of the year, 50,000 cubic yards of soft and 9,000 cubic yards of rock having been excavated.
Third Section-A contour survey for the third section of this catchwater was completed and a commencement made with the contract drawings.
Expenditure
Expenditure to 31st Dec., 1938
$213,641.86 $253,895.39
245. Water Works-Tai Lam Chung Scheme-Preliminary Works:-The two rotary core and the two hand bore percussion drilling sets of equipment from the Shing Mun plant were taken over and, after extensive overhaul and refitting, were put to work on preliminary boring at a site proposed for the dam. By the end of the year core samples of 60 feet of hard and 130 feet of soft material had been obtained.
The area adjoining the site was cleared of brushwood and survey work put in hand. A 10 foot rectangular gauge, for measuring the discharge of the main stream, and an 8″ rain gauge were constructed by the end of the year. A temporary camp, comprising quarters, kitchen, latrines and store, for the drilling and survey staffs, and a water supply for the camp and borings were completed.
Expenditure
$10,000.00
OTHER WORKS.
246. A one storey building in brick and concrete was erected at the Wireless Telegraph Station, Hung Hom, for a diesel electric generating set. The contract was let to Messrs. Tung Shan & Co. on 21st September and the building was satisfactorily completed on 30th November. The cost was charged to the P.W.D. Special Expenditure vote for Diesel electric generating set.
247. At the request of the Honourable Director of Medical Services a water supply was given to the Emergency Refugee Camp at Fanling Railway Station, involving the laying of 1,006 feet of 2″, 1,910 feet of 1½″ and 88 feet of 1¼″ wrought iron piping, and to the refugee camp at Ping Shan, involving the laying of 506 feet of 1″ and 232 feet of 1¼″ wrought iron piping.
248. In conformity with the usual custom certain works were carried out for the Naval, Military and Air Force Authorities.
Hong Kong, 24th March, 1939.
R. M. HENDERSON,
M.INST.C.E., M.I.MECH.E., M.INST.W.E.
Director of Public Works.
Q46
and is of similar construction. Overflows, to deal with a flood water of 4.6′′ of rain per hour on the catchment area, have been provided generally at stream crossings. A pathway of a minimum width of 12′-0′′ for a length of 3,500 feet, and thereafter of 10′-0′′ width, was constructed throughout, and this has been carried over the overflows by means of reinforced concrete decking. Sandtraps, provided with washout pipes, were constructed in the invert, usually at stream crossings.
Owing to the serious water situation due to abnormally low rainfall this summer a temporary conduit, to collect water from the principal stream of the second section of this catchwater and about 5,500 feet in length, was constructed by the maintenance contractors Messrs. Kin Lee & Co. Work commenced early in August and was completed by the end of October when the water was diverted into the first section of the catchwater whence it discharged into the Jubilee Reservoir, This conduit was designed to collect a maximum of five million gallons per day and about 96 million gallons had been collected by the end of the year. The cost of this work was $10,999.63.
Second Section-A contract for this section was signed on 6th September with Messrs. Sang Lee & Co. for $231,500.10. Good progress had been made by the end of the year, 50,000 cubic yards of soft and 9,000 cubic yards of rock having been excavated,
Third Section-A contour survey for the third section of this catchwater was completed and a commencement made with the contract drawings.
Expenditure
Expenditure to 31st Dec., 1938
$213,641.86 $253,895.39
245. Water Works-Tai Lam Chung Scheme-Preliminary Works:-The two rotary core and the two hand bore percussion drilling sets of equipment from the Shing Mun plant were taken over and, after extensive overhaul and refitting, were put to work on preliminary boring at a site proposed for the dam. By the end of the year core samples of 60 feet of hard and 130 feet of soft material had been obtained.
The area adjoining the site was cleared of brushwood and survey work put in hand. A 10 foot rectangular gauge, for measuring the discharge of the main stream, and an 8′′ rain gauge were constructed by the end of the year. A temporary camp, comprising quarters, kitchen, latrines and store, for the drilling and survey staffs, and a water supply for the camp and borings were completed.
Expenditure
$10,000.00
OTHER WORKS.
246. A one storey building in brick and concrete was erected at the Wireless Telegraph Station, Hung Hom, for a diesel electric generating set. The contract was let to Messrs. Tung Shan & Co. on 21st September and the building was satisfactorily completed on 30th November. The cost was charged to the P.W.D. Special Expenditure vote for Diesel electric generating set.
247. At the request of the Honourable Director of Medical Services a water supply was given to the Emergency Refugee Camp at Fanling Railway Station, involving the laying of 1,006 feet of 2′′, 1,910 feet of 11" and 88 feet of 14" wrought iron piping, and to the refugee camp at Ping Shan, involving the laying of 506 feet of 1" and 232 feet of 1 wrought iron piping.
248. In conformity with the usual custom certain works were carried out for the Naval, Military and Air Force Authorities.
Hong Kong, 24th March, 1939.
R. M. HENDERSON,
M.INST.C.E., M.I.MECH.E., M.INST W.E. Director of Public Works.
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