5.15. There were many other projects which are interesting from a structural engineering viewpoint, and which indicate the increasing use of pre-stressed concrete. Construction of an electric switching station was commenced at Bowen Road with two pre-stressed concrete box girders, 37 feet deep, with a centre clear span of 148 ft. and a 57 ft. 6 ins. cantilever span at each end. These form the main machinery floors and support two suspended office floors. At Castle Peak Road, construction commenced on a single storey factory building with a post-tensioned pre-stressed concrete hexagon space frame.
5.16. The collapse of a temporary public spectator stand which had not been the subject of an application to the Building Authority, at Sek Kong in late 1968, in which many persons were injured, has resulted in certain amendments being made to Part III of the Places of Public Entertainment Ordinance which is administered by the Office insofar as temporary structures are concerned. These amendments are designed to provide for a stricter control over the design and construction of such structures intended for public entertainment, and now place a responsibility on professional staff to inspect all such work as a condition prior to the issue of the necessary permit by the Licensing Authority, who is the Commissioner of Police.
5.17. Many inspections were also carried out in connection with the annual renewal of licences for theatres, cinemas, meeting places, restaurants and various other business establishments, the object being to ensure continuing compliance with the regulations and assess the general structural condition of the premises. The inspections of all temporary structures and licensed premises are carried out in conjunction with other interested authorities, notably the Police Licensing Office and the Fire Services Department, with whom a close liaison was maintained throughout the year.
5.18. A control and enforcement section operates within each of the three general divisions to deal exclusively with unauthorized and unacceptable alterations and additions to or change in use of buildings. The high incidence of this kind of work is attributable to several factors, not the least of which is ignorance of the law and its protective purpose, financial gain, high rentals and the lack of space brought about by growing families or increasing business. The disturbing feature of most of this unauthorized work is that, apart from infringing the law, it can and does give rise to real hazards. There are many cases
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5.15. There were many other projects which are interesting from a structural engineering viewpoint, and which indicate the increasing use of pre-stressed concrete. Construction of an electric switching station was commenced at Bowen Road with two pre-stressed concrete box girders, 37 feet deep, with a centre clear span of 148 ft. and a 57 ft. 6 ins. Cantilever span at each end. These form the main machinery floors and support two suspended office floors. At Castle Peak Road, construction commenced on a single storey factory building with a post-tensioned pre-stressed concrete hexagon space frame.
5.16. The collapse of a temporary public spectator stand which had not been the subject of an application to the Building Authority, at Sek Kong in late 1968, in which many persons were injured, has resulted in certain amendments being made to Part III of the Places of Public Entertainment Ordinance which is administered by the Office insofar as temporary structures are concerned. These amendments are designed to provide for a stricter control over the design and construction of such structures intended for public entertainment, and now place a responsi- bility on professional staff to inspect all such work as a condition prior to the issue of the necessary permit by the Licensing Authority, who is the Commissioner of Police.
5.17. Many inspections were also carried out in connection with the annual renewal of licences for theatres, cinemas, meeting places, restaurants and various other business establishments, the object being to ensure continuing compliance with the regulations and assess the general structural condition of the premises. The inspections of all temporary structures and licensed premises are carried out in conjunction with other interested authorities, notably the Police Licensing Office and the Fire Services Department, with whom a close liaison was maintained throughout the year.
5.18. A control and enforcement section operates within each of the three general divisions to deal exclusively with unauthorized and unacceptable alterations and additions to or change in use of buildings. The high incidence of this kind of work is attributable to several factors, not the least of which is ignorance of the law and its protective purpose, financial gain, high rentals and the lack of space brought about by growing families or increasing business. The disturbing feature of most of this unauthorized work is that, apart from infringing the law, it can and does give rise to real hazards. There are many cases
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