Overall length of the new run- way will 11,130 ft. At its nar- rowest section, the overall width of the reclamation at the top of the seawalls will be 830ft., com- prising the runway proper - a centre strip 200 ft. wide and grass strips, 250ft. and 260ft. wide, to the west and east of the runway proper, and a 75ft. wide taxiway with an adjacent 45 ft. wide surfaced strip to the crest of the east seawall.
The reclamation involves forming some 2,600,000 sq. ft.
(KAI
TAK)
KOWLOON
A # A
ROND
BAY
RECLAMATION
RECLAMATION
\NEW PAST EXIT
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of land contained by 1.25 miles of seawalls. Some 2 million cu. yd. (2.5 million tons) of soft mud must be dredged from the sea bed to form a firm foundation, avoiding settlements of an unacceptable magnitude under paved areas.
The total volume of filling material required will amount to some 750,000 cu.yd. (one million tons) of rock, and 6 million cu. yd. (8.5 million tons) of decomposed rock. Transporting the filling material and removing the dredged mud from the reclamation area, using lorries and barges, will be in itself a gigantic task. Taking five tons per lorry load and 500 cubic yards per barge load as a basis, about 1.9 million lorry loads and 13,000 barge loads will have to be moved to do the job.
Filling material will be excavated from hills, to be generally left terraced for future development, and also from other areas already under develop- ment.
A special access road will cut across the Kow- loon Bay reclamation. A bridge will be built over the channel between the reclamation and the exist- ing runway promontory. One feature of the bridge will be a floating section, capable of being opened to allow passage for normal marine traffic during specified hours.
The filling will be completed to near final levels and allowed to settle for about six months before the work of constructing the new runway pave- ment begins. The filling between the seawalls on the extension will be formed with layers of dif- ferent materials bottom dumped decomposed rock; end-tipped decomposed rock; under paved areas, compacted decomposed rock sub-grade; sand sub-base and asphalt.
The by-pass area and a section of runway at the sea-end of the extension will have a rigid pavement. Instead of crushed stone and asphalt, dry lean con- crete and reinforced dewelled concrete will be used to form the top two layers.
P
Ancillary works include lighting new ap- proach lights. Strobe lights, taxiway lights, peri- meter lights, runway edge lights, threshold lights and takeoff lights, day markings and fire mains.
Meanwhile, selected stretches of existing pave- ments are being grooved for tests to compare skid
MILE O
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KOWLOON CITY FERRY PIER
14442 MAIN TAXINERY
RUNNKY JUA,
V1
WALE
KWUN TONG
PERRY PIER
SUB-FIRE STATION
CHANNEL ROCK
“ACCE
BRIDGE
LIGHTING DOLPHINE
2,600 FEET
KAI TAK AIRPORT RUNWAY EXTENSION
# LAAPA
resistance of the surface to that of the existing run- way's surface. Should the tests prove satisfactory, the entire runway may be grooved to improve sur- face skid resistance.
Macau bridge started
Paul Lee Engineering Co., Hong Kong, has start- ed work on the 10,000 ft. long causeway/bridge which will link the City of Macau with Taipa, the nearest of the Province's off-shore islands. The firm, in a consortium with Mr. Ho Yin and the Ma- cau Land Development Corporation, was awarded the contract recently on a bid of HK$14,829,950.
A result of the bridge, expected to be com- pleted within three years, will be that Macau will gain direct access to the sea. The old harbour at Macau has been silted up for decades.
The prestressed concrete bridge itself will be 4,050 ft. long and will have twenty-two 82 ft. side spans and two 66 ft. end spans. Its 240ft. main span will be 90 ft. to 100 ft. above the main navi- gational channel.
Singapore construction estimates
Some S$100 million is provided for public housing and S$50 million for development projects by the Jurong Town Corporation in the Singapore Government's development estimates for the year ended March 31, 1971.
Other large projects earmarked are a new S$3.7 million studio and offices for Radio Singapore; a S$6.4 million centralised subordinate courts build- ing in Havelock Road and a new S$5.2 million popular science centre.
The Housing and Development Board, whose new target is 13,000 housing units per annum, is likely to spend $$112.8 million during 1970/71. Main areas scheduled for development are Kallang Basin, Queenstown, Toa Payoh, Redhill, Hender- son Road, Balestier Estate, Telok Blangah new town and Covent Garden/Havelock Road.
Earthworks have begun on the new Raffles Institution, which will cater for both academic and technical education and is estimated to cost $$2.4 million. It is expected to be completed by July 1971.
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Far East BUILDER, April 1970