Hong Kong Regulations

BUILDING (ADMINISTRATION) REGULATIONS - REGULATION 8

Prescribed plans in respect of building works

(Past version on 20/09/1997).
(Past version on 01/07/1997).
(Past version on 30/06/1997).

Adaptation amendments retroactively made - see 29 of 1998 s. 105 Plans

(1) The plans and details set out hereunder are prescribed, for the purposes
of the Ordinance and regulations, in respect of building works-

   (a)  plans of every floor and of the roof of the building, on which there
        shall be shown full dimensions, the thickness of walls, the position
        of all windows, soil fitments, waste fitments and water storage tanks,
        and the intended use of every part of the building;

   (b)  plans showing-

        (i)    all elevations of the building;

        (ii)   the level of adjacent streets in relation to a known datum and
               to the levels of the site and the building;

        (iii)  the width of every street adjacent to the site; and

        (iv)   the position, depth and construction of any well;

   (ba) if so required by the Building Authority, a geotechnical assessment of
        the adequacy of the site for the proposed building works shall
        accompany the plans prescribed in sub-paragraph (a), (b), (c) or (h)
        and the geotechnical assessment shall include plans and sections of
        the proposed site formation works and foundation works; (L.N. 75 of
        1981)

   (baa) (Repealed L.N. 514 of 1997)

   (bb) a site formation plan showing-

        (i)    all site formation works and associated surfacewater drainage
               works incorporating the requirements of the report prescribed
               in sub-sub-paragraph (E);

        (ii)   the existing nature of the site and the surrounds (including
               accurate survey plan with ground level contours, geological
               conditions, groundwater conditions and surfacewater conditions)
               and particulars of structures, foundations, public utilities,
               drains and sewers and other services on and adjacent to the
               site;

        (iii)  safety precautions to be taken whilst carrying out the building
               works during periods of heavy rainfall;

        (iv)   a schedule of the geotechnical design assumptions;

        (v)    the sequence of the building works and methods to be employed;

        (vi)   if so required by the Building Authority, specifications and
               any other relevant particulars; (L.N. 233 of 1982)

        (vii)  in area number 1 of the scheduled areas, the envelope of all
               bulk excavation by means of cross-sections and horizontal plan
               drawings marked up with levels above the Hong Kong Principal
               Datum, (L.N. 233 of 1982; 52 of 1990 s. 10) and the site
               formation plan shall be accompanied by supporting documentation
               including- (A) an explanatory guide to the submission; (B) a
               report containing the results of a study including topography,
               geology, groundwater, surfacewater, site history, public
               utilities, drains and sewers and other services, and local
               geotechnical records; (C) a report containing the results of
               ground investigation including comprehensive details of
               equipment and procedures used; (L.N. 233 of 1982) (D) a report
               containing the results of site monitoring of groundwater
               conditions; (E) a report containing critical examination and
               interpretation of sub-sub-paragraphs (B), (C) and (D), a
               schedule of the geotechnical design  assumptions, discussion of
               anticipated geotechnical problems and an outline of variations
               of the works which should be adopted if, during the carrying
               out of the building works, a geotechnical design assumption is
               revealed as being erroneous so that compliance with regulation
               20 of the Building (Construction) Regulations ( Cap 123 sub.
               leg.) could no longer be demonstrated and containing
               geotechnical requirements for the design and construction of
               the site formation works including testing, inspecting and
               maintenance requirements; (L.N. 439 of 1990) (F) stability
               analyses sufficient to demonstrate compliance with regulation
               20 of the Building (Construction) Regulations ( Cap 123 sub.
               leg.); design calculations for site formation works;
               calculations of the effect of the building works on groundwater
               conditions, the site and any building, structure and land; and
               calculations for and consideration of all other relevant
               geotechnical matters. All such analyses and calculations shall
               be paginated and prefaced by a comprehensive index; (L.N. 75 of
               1981; L.N. 439 of 1990)

   (bc) if so required by the Building Authority, an excavation and lateral
        support plan showing-

        (i)    all excavation and lateral support work (including any ground
               treatment and any dewatering) incorporating the requirements of
               the report prescribed in sub-sub-paragraph (E);

        (ii)   the existing nature of the site and the surrounds (including an
               accurate survey plan with ground level contours, geological
               conditions, groundwater conditions and surface water
               conditions) and particulars of streets, structures,
               foundations, public utilities, water mains, drains, sewers and
               other services and the dimensioned location of water carrying
               services and foundations on and adjacent to the site;

        (iii)  a schedule of the geotechnical design assumptions;

        (iv)   the sequence of all sub-surface building works and methods to
               be employed;

        (v)    the particulars of the monitoring to be carried out for
               building and ground movements and variations in piezometric
               levels; and

        (vi)   other specifications and relevant particulars, and the
               excavation and lateral support plan shall be accompanied by
               supporting documentation including- (A) an explanatory guide to
               the submission; (B) a report containing the results of a study
               including topography, geology, groundwater, surface water, site
               history, public utilities, water mains, drains and sewers and
               other services, and local geotechnical records; (C) a report
               containing the results of site investigation and laboratory
               testing including comprehensive details of equipment and
               procedures used; (D) a report containing the results of site
               monitoring of groundwater conditions; (E) a report containing
               critical examination and interpretation of sub-sub-paragraphs
               (B), (C) and (D), a schedule of the geotechnical design 
               assumptions, discussion of anticipated geotechnical problems,
               and an outline of variations of the works which should be
               adopted if, during the carrying out of the building works, a
               geotechnical design assumption is revealed as being erroneous
               so that compliance with regulation 4 of the
               Building (Construction) Regulations ( Cap 123 sub. leg.) could
               no longer be demonstrated and containing geotechnical
               requirements for the design and construction of the excavation
               and lateral support works including testing, inspecting and
               monitoring requirements; and (F) analyses sufficient to
               demonstrate compliance with regulation 4 of the
               Building (Construction) Regulations ( Cap 123 sub. leg.),
               design calculations for the lateral support systems,
               calculations of the effect of the building works on groundwater
               conditions, the site and any building, structure, street, land
               or services, and calculations for and consideration of all
               other relevant geotechnical matters, all such analyses and
               calculations being paginated and prefaced by a comprehensive
               index; (L.N. 438 of 1990)

   (bd) (Repealed L.N. 514 of 1997)

   (c)  one or more sections showing the foundations, the levels of the site
        and the lowest floor of the building, the height of the building, the
        clear height of every storey, the position of windows and of the
        floors and the level of the roof of every adjoining or adjacent
        building, the maximum gradient boundary-to-boundary across the site,
        the maximum depth of excavation, the maximum thickness of filling and
        the volume of all excavation and all filling; (L.N. 75 of 1981)

   (d)  a foundation plan-

        (i)    showing the size and position of foundations together with a
               full report of the site investigation work undertaken and
               details of any grouting work to the ground proposed to be
               carried out; and

        (ii)   in area number 2 or 4 of the scheduled areas, accompanied by
               supporting documentation including- (L.N. 347 of 1993) (A) an
               explanatory guide to the submission; (B) a report containing
               the results of a study including topography, geology,
               groundwater, surfacewater, site history, public utilities,
               drains and sewers and other services, and local geotechnical
               records; (C) a report containing the results of ground
               investigation including comprehensive details of equipment and
               procedures used; (D) a report containing the results of site
               monitoring of groundwater conditions; (E) a report containing
               critical examination and interpretation of sub-subparagraphs
               (B), (C) and (D), a schedule of the geotechnical design 
               assumptions, discussion of anticipated geotechnical problems
               and containing geotechnical requirements for the design and
               construction of the foundation works including testing,
               inspecting and maintenance requirements; (F) design
               calculations for foundation works; (52 of 1990 s. 10)

   (e)  a drainage plan, showing the size and depth of drains or sewers;
        connexions to a public sewer or drain or nullah, any other method for
        the disposal of drainage, the position of disconnecting traps, and the
        means of ventilation;

   (f)  a block plan, showing the size and position of the building and of
        other buildings in the immediate vicinity, and neighbouring streets;

   (g)  where the position of the site is not clearly identifiable from such
        block plan, a key plan showing the position of the site;

   (h)  a diagrammatic plan, with full dimensions and calculations, showing-

   (i)  the height, site coverage, plot ratio and disposition of the building
        in accordance with regulations 19, 20 and 21 of the Building 
        (Planning) Regulations ( Cap 123 sub. leg.); and (L.N. 51 of 1969;
        L.N. 57 of 1988; L.N. 438 of 1990)

        (ii)   any open space required, by regulations 25, 27 and 28 of the
               Building (Planning) Regulations ( Cap 123 sub. leg.), for the
               building;

        (i)    plans showing structural details, together with one set of
               structural calculations for the structural works; (L.N. 438 of
               1990)

   (j)  in respect of any canopy, bridge or other projection over a street or
        unleased Government land, plans showing clearly the nature and
        dimension of such projection; (L.N. 79 of 1992; 29 of 1998 s. 105)

   (k)  details showing-

        (i)    the area of usable floor space, which expression shall have the
               meaning assigned to it by regulation 3 of the
               Building (Standards of 
               Sanitary Fitments, Plumbing, Drainage Works and Latrines) Regulations
               ( Cap  123 sub. leg.);

        (ii)   the number and type of soil fitments and waste fitments to be
               provided in the building; and

        (iii)  (Repealed L.N. 79 of 1992)

   (l)  in the scheduled areas, a ground investigation plan showing-

(52 of 1990 s. 10)

        (i)    the location, size and depth, or the criteria for determining
               them, of all exploratory works including boring, drilling,
               probing, testing, installation of and measurement by
               instruments and sampling of soil and rock, and the equipment
               and procedures for carrying out the exploratory works;

        (ii)   the equipment and procedures for carrying out laboratory
               testing and the criteria for selecting test samples; and

        (iii)  if so required by the Building Authority, specifications,
               reporting format and any other relevant particulars; (L.N. 233
               of 1982; L.N. 362 of 1984)

   (m)  where regulation 72 of the Building (Planning) Regulations ( Cap  123
        sub. leg.) applies, plans showing in detail the provision made for
        persons with a disability in accordance with that regulation. (L.N.
        362 of 1984; L.N. 241 of 1997)

(2) In this regulation, the expressions "soil fitment" (便溺污水設備)
and

"waste fitment" (廢水設備) have the meaning assigned to them by the
Building 
(Standards of Sanitary Fitments, Plumbing, Drainage Works and Latrines) 
Regulations ( Cap 123 sub. leg.).

(3) The plans set out hereunder are prescribed, for the purposes of the
Ordinance and regulations, in respect of demolition works-

   (a)  a plan showing the construction and condition of the building to be
        demolished, including sections showing slopes and ground supported by
        it, and all affected buildings, structures, streets, land and
        services;

   (b)  a plan showing the existing nature of the site and surrounds

(including an accurate survey plan with ground level contours and sections
showing slopes and ground supported by the building to be demolished) and all
necessary removal of ground;

   (c)  a plan showing the sequence, equipment and procedures for the
        demolition works;

   (d)  a plan showing the support to be provided to the building to be
        demolished and any slopes and ground supported by it and all affected
        buildings, structures, streets, land and services at each stage of the
        demolition works;

   (e)  a plan showing all precautionary measures for the protection of the
        public including dust screens, catch fans, hoardings and covered
        walkways;

   (f)  a plan showing the support to be provided to all affected buildings,
        structures, streets, land and services at each stage of the demolition
        works; (L.N. 514 of 1997)

(4) The prescribed plans for demolition works must be accompanied by-

   (a)  a stability report of the building to be demolished and all affected
        buildings, structures, streets, land and services;

   (b)  structural calculations for supports where the Building Authority
        considers it appropriate;

   (c)  a stability report with calculations demonstrating that the demolition
        works will not render inadequate the margin of safety of, or cause
        damage to, any building, structure, street, land and services;

   (d)  a stability report with calculations demonstrating that the proposed
        use of equipment or mechanical plant will not render inadequate the
        margin of safety of, or cause damage to, any building, structure,
        street, land and services. (L.N. 514 of 1997; L.N. 608 of 1997)

   (e)  (Repealed L.N. 608 of 1997)

"soil fitment" (便溺污水設備) and "waste fitment" (廢水設備)