Structure provides a clear headroom of 48ft. through the doors
Kaitak Airport
REDPATH DORMAN LONG LTD.
GAMMON (HK) LTD.
design and supply of steel
erection sub-contractors
A GIANT hangar in which Hong Kong Aircraft & Engineering Co. Ltd. will service jumbo jets is one of a number of projects being carried out at Kaitak Airport in preparation for the new leviathans.
Nearly 1,350 tons of steel have been used in the structure, including the construction of the doors.
girder of 400 ft. clear-span across the front.
Construction of the hangar has been carried out in accordance with international practice, taking into account local Building Ordinance Re- gulations and weather conditions such as high temperatures and typhoons.
Doors, main box girders, stan- chions and fittings came from the Unit- ed Kingdom. The rest of the material was fabricated in Hongkong by Gam- mon (Hongkong) Ltd. under the supervision of Redpath Dorman Long. Almost 50 per cent of the hangar was fabricated on site.
The hangar has internal dimensions of 200 ft. by 400 ft. and a clear head- room of 48 ft. through the door. Al- though it can house three 707's at one time, it does not allow for a 747 to be locked up behind the doors. The tail section will protrude from the en- trance, but it is expected that this sec- tion of the aircraft will not require Special machine
indoor servicing.
Eight doors cover the front, each measuring 50 ft. by 50 ft. and each. weighing 15 tons. The doors roll along on tracks and are individually mo- torised. In their fully opened position there is a clear access of 300 ft., the roof being supported from a main box
Far East BUILDER, February 1970
The steel used in the construction consists of mild and high yield steels, and to assist the local fabrication con- tent, a special machine was brought from England to cut and prepare the ends of hollow sections for welding. The hollow sections are used for bracing and the main roof trusses.
These trusses are 185 ft. clear span and were welded on site with Murex Low Hydrogen Fortrex 35 welding elec- trodes which were specially imported from England.
Inside the hangar there is a 10-ton crane which runs the full 400 ft. length on suspended gantry girders from the roof trusses. Provision is made for a second 5-ton crane to run along the rear of the hangar on a second set of runway beams; this crane will be used for servicing the tail of conventional aircraft.
Design of the hangar was so care- fully calculated before the steel arrived on site that Redpath Dorman Long together with Gammon (Hongkong) Ltd. were able to complete erection of this mammoth project in 16 weeks from the time access was obtained to the site.
Erection commenced on site on May 26, 1969.
RDL agents in Hong Kong are The Jardine Engineering Corporation Ltd.
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