No_8_August_1968 — Page 42

42

Fig. 3. Section A A

vile scanti

O

CALE

FT.

Static system

The superstructure consists of cast in-situ tee beams for each end span of 69 ft. and a three span curved continuous box beam. Depth of the beam is 40.4 in., with a minumum h/e h/e 1/19.5 for the box beam. The width of the two-lane roadway is

-

1/20.5 for tee beams and

16ft., on both sides of which are kerbs of 2ft. 6in.

The structure is prestressed in the longitudinal direction by the BBRV post-tensioning

system. Tee-beams have two 100-ton tendons and com- posite sections have an additional two 60-ton tendons.

All beams rest on sandwiched steel plate neoprene bearings. All piers

A

Fig. 4.

2

3

4

B

are rigid against horizontal forces, except piers 1 and 4 which have sliding seats.

The moment distribution method for the curved continuous beam has been adopted in the analysis of the box sections. This method has proved to be a reliable time-saving device compared with the rigorous mathema- tical treatment of curved indeter- minate structures.

The box beams will be cast in stages to allow some creep and shrinkage of the concrete to take place before the structure takes its final shape.

The flyover is designed by Mr. Andrew Jean, in collaboration with engineers of the HK Public Works Department.

The 'COUNT' size 24" x 20"

The washbasin designed to build into a

JS

counter-top.

Manufactured by:

SANITARY FIXTURES

IN

WHITE AND COLOUR

obtainable through

Acme Sanitary Ware Co., Ltd.

22-28, Nanking Street,

Kowloon, Hong Kong.

Tel. K-887171

*Borneo-Malaya Representatives Ltd.

Crosby House

P. O. Box 2197, Robinson Road Singapore, 1.

Sittikit Construction & Supply Co., Ltd. 357-359, Mahaputharam Road,

P. O. Box 1396

Bangkok, Thailand

* Malaysia branches at: Kuala Lumpur,

Penang, Kuching, Sibu, Brunei, Jesselton.

JOHNSON & SLATER LTD.

PYRAMID WORKS

•

QUEENBOROUGH KENT ENGLAND

*

Far East BUILDER, August 1968.