CAP. 172]
Cooling plant,
Positions of inlets, etc.
Ducts and shafts.
Position of inlets, etc., in relation to stage.
Ventilation of lavatories, etc.
Valves and dampers.
Access to fans, etc.
Short-circuiting
Places of Public Entertainment.
108. When a cooling plant is installed the machinery in connexion therewith shall be contained in a room ventilated to external atmosphere and provided with fire-resisting partitions and doors.
109. The inlet and outlet gratings, openings, ducts and fans shall be so placed, and of such size, that no objectionable draughts are caused.
110. When air ducts and shafts are constructed of material other than metal they shall be formed of or lined with a suitable smooth material impervious to moisture. All ducts shall have adequate means of access for cleaning purposes.
111. In any premises where a safety curtain is provided to the proscenium opening the installation shall be such that under any conditions of working it shall not be possible for a current of air to be drawn from the stage to the auditorium, and in order to ensure this supplementary mechanical means of extracting air from the stage shall be provided if required by the building authority and the licensing authority.
112. Independent means of extraction from lavatories and sanitary conveniences shall be provided and so arranged that the air movements shall not be from the lavatories and conveniences into other parts of premises.
113. All regulating valves and dampers necessary to secure effective air distribution shall be fitted with pointers or other means of indicating the positions in which they are set and with an approved locking device which cannot readily be interfered with by the public.
114. When practicable, means of access to all fans, motors, control gear and other apparatus shall be provided, and the starting mechanism shall be adjacent to or in sight of the machinery which it controls.
115. If two or more extraction fans are installed provision shall be made, if required by the building authority and the licensing authority, to ensure that the operation of
324
CAP. 172]
Cooling plant,
Positions of inlets, etc.
Ducts and shafts.
Position of inlets, etc., in relation to stage.
Ventilation of lavatories, etc.
Valves and dampers.
Access to fans, etc.
Short- circuiting
Places of Public Entertainment.
108. When a cooling plant is installed the machinery in connexion therewith shall be contained in a room ventilated to external atmosphere and provided with fire-resisting partitions and doors.
109. The inlet and outlet gratings, openings, ducts and fans shall be so placed, and of such size, that no objection- able draughts are caused.
110. When air ducts and shafts are constructed of material other than metal they shall be formed of or lined with a suitable smooth material impervious to moisture. All ducts shall have adequate means of access for cleaning purposes.
111. In any premises where a safety curtain is provided to the proscenium opening the installation shall be such that under any conditions of working it shall not be possible for a current of air to be drawn from the stage to the auditorium, and in order to ensure this supplementary mechanical means of extracting air from the stage shall be provided if required by the building authority and the licensing authority.
112. Independent means of extraction from lavatories and sanitary conveniences shali be provided and SO arranged that the air movements shall not be from the lava- tories and conveniences into other parts of premises.
113. All regulating valves and dampers necessary to secure effective air distribution shall be fitted with pointers or other means of indicating the positions in which they are set and with an approved locking device which cannot readily be interfered with by the public.
114. When practicable, means of access to all fans, motors, control gear and other apparatus shall be provided. and the starting mechanism shall be adjacent to or in sight of the machinery which it controls.
115. If two or more extraction fans are installed pro- of air supply. vision shall be made, if required by the building authority and the licensing authority, to ensure that the operation of
324
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