B 52
[Subsidiary]
Roofs to be weatherproof.
CAP. 123]
Building (Construction) Regulations
[1985 Ed.
82. Every roof shall be-
Accessible roofs to have parapet
or railings.
LN 294/76.
Hollow ceilings.
Steel framed and
reinforced
concrete
structures.
(Cap. 123, sub. leg.)
(a) weatherproof; and
(b) provided with adequate gutters and rain water pipes to prevent the direct discharge of water upon or over any footpath or roadway.
83. Every part of a roof, to which access is provided, shall be protected by parapet walls or railings not less than 1100 mm in height from finished roof level and so constructed as to inhibit climbing and the passage of articles more than 100 mm in their smallest dimension. The lowermost 150 mm of such parapet walls or railings shall be built solid.
84. Where a ceiling is constructed with a space between it and the floor or roof above, such space shall be properly protected against vermin and in the case of a timber floor or roof, such space shall also be adequately ventilated.
PART IX
DUTIES OF REGISTERED STRUCTURAL ENGINEER IN STRUCTURAL
USE OF TIMBER, STEEL AND REINFORCED CONCRETE
85. (1) (a) Where any steel framed or reinforced concrete structure is designed in accordance with the provisions of regulation 113 or regulations 157 to 165, the structural details and calculations required by regulation 8(1)(i) of the Building (Administration) Regulations shall be prepared and signed by a registered structural engineer.
(b) The construction of any structure so designed shall be supervised by a registered structural engineer in accordance with regulation 37 of the Building (Administration) Regulations.
(2) Structures may be designed and constructed in prestressed concrete, shell construction or any other methods and materials, subject to-
(a) the production of proof to the satisfaction of the Building Authority regarding the soundness of design; and
(b) the structural details and calculations required by regulation 8(1)(i) of the Building (Administration) Regulations being prepared and signed by a registered structural engineer.
(3) Where the Building Authority is satisfied with the proof of soundness of design of any structure under paragraph (2)(a), the construction shall be supervised by a registered structural engineer in accordance with regulation 37 of the Building (Administration) Regulations.