January_1966 — Page 46

American Highway Bridge Design Competition

A WORLD-WIDE highway bridge design competition, offering US$50,000 in awards, is being promoted by United States Steel International to stimulate interest in the imaginative use of steel.

The competition is in two categories, one for profes- sional engineers and consultants and one for students in colleges of engineering. In the professional category there will be a best design award of $15,000. Authors placed second and third will receive $10,000 and $5,000 respec- tively, and there will be ten honourable mentions of $1,000 each. Students prizes will be $5,000, $2,000 and $1,000, and four honourable mentions of $500.

Participants must design an overpass structure to carry a two-lane highway at right angles over an interstate highway, with frontage roads, on level terrain.

Entries will be judged on four factors: originality of design, the degree to which steel is utilized, economy in design and fabrication, and the appearance of the struc- ture. Deadline for receipt of entries is May 31, 1966.

Rules and instructions for submitting entries may be obtained from Mr. Robert S. Holmes, general manager, Highway Construction Marketing. United States Steel. Five Gateway Centre, Pittsburgh, Penn. 15230, USA.

Curved Laminated Building Panel Developed

A NEW type of laminated building panel designed by the Danish architect Paul Cadovius has been developed by Royal System of Aarhus, Denmark, under the trade name Cadomus.

Royal System recently completed two new Cadomus buildings one a factory building 22,000 sq. ft. in area, the other an office building of about one-quarter the size -to designs which required the use of prefabricated

Completed office building at Aarhus

curved foam-cored building panels. These were 5 ft. 3 in. wide by 3 ft. 7 in. deep and 1.6 in. thick, filled with rigid urethane foam.

The panels were faced on both sides with sheet alu- minium, only one-fiftieth of an inch thick, and were filled by a direct injection technique, being held in specially built heated presses during the filling operation. Until now, such laminates have almost invariably been of flat rectangular construction. Where insulation or cladding of complex or curved surfaces has been required, it has been carried out by the application of rigid foam in-situ to preformed cavities or surfaces, by injection or spraying.

The office building is semi-cylindrical in shape. Each arch section of the building was assembled on the ground and then swung up into position on a hinged base. The sections were joined with a teak slat and sealed with strips of synthetic rubber compound. Curved windows were fitted in a special p.v.c. frame with urethane foam filling.

36

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UNION HOUSE 3RD FLOOR, HONG KONG

Sole Agents:

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Far East Architect & Builder January, 1966