### Building (Private Streets and Access Roads) Regulations 《建築物(私家街道及通路)規例》

17. Surfacing of pedestrian ways and service lanes
Every pedestrian way and service lane shall be surfaced with—
(a) concrete not less than 100 mm thick laid on rolled hardcore not less than 75 mm thick; or (L.N. 439 of 1990)
(b) bitumen macadam not less than 50 mm thick, laid on rolled hardcore not less than 75 mm thick, and covered with a layer of fine bitumen macadam not less than 25 mm thick; or
(c) other approved material.
(L.N. 156 of 1977)

18. Surfacing of footpaths
Every footpath shall be surfaced with—
(a) concrete not less than 50 mm thick, and covered with granolithic paving not less than 12.5 mm thick; or (L.N. 294 of 1976; L.N. 439 of 1990)
(b) other approved material.

19. Kerbstones
(1) Every kerbstone shall be 150 mm in width, 300 mm in height and not less than 750 mm in length. (L.N. 294 of 1976)
(2) Every kerbstone in a private street or cul-de-sac shall be constructed of granite and every kerbstone in an access road shall be constructed of granite or concrete. (L.N. 439 of 1990)

20. Height of kerbs
The top of every kerb shall be not less than 75 mm nor more than 175 mm above the level of the channel adjacent thereto.
(L.N. 294 of 1976)

21. Camber and crossfall
(1) Save where a bend in any private street, cul-de-sac or access road is super-elevated, the carriageway therein shall have a camber of 1 in 40.
(2) Every footpath shall have a crossfall towards the kerb of 1 in 48.

22. Grade of manhole covers and gratings
(1) Any manhole cover or grating situated in the carriageway of any private street, cul-de-sac or access road shall be of a grade equal to Grade A as specified in the current relevant British Standard Specification.
(2) Any manhole cover or grating in any footpath, pedestrian way or service lane shall be of a grade equal to Grade B as specified in the current relevant British Standard Specification.

### Building (Private Streets and Access Roads) Regulations 《建築物(私家街道及通路)規例》

23. Shape of manhole covers
(1) The cover of every manhole, in a private street, cul-de-sac, access road, pedestrian way or service lane, provided for a drain or sewer provided for the carriage of foul water shall be rectangular on plan.
(2) The cover of every such manhole provided for a drain or sewer provided for the carriage of surface water shall be rounded on plan.
(3) For the purposes of this regulation, the expressions foul water (髒水) and surface water (地面水) shall have the meaning assigned to them by regulation 2 of the Building (Standards of Sanitary Fitments, Plumbing, Drainage Works and Latrines) Regulations (Cap. 123 sub. leg. I). (E.R. 4 of 2021)

24. Drainage of private streets, etc.
(1) Every private street, cul-de-sac, access road, pedestrian way and service lane shall be provided with channels and drains and sewers for the carriage of rain-water and surface water.
(2) The size and gradient of every such channel, drain or sewer shall be adequate to carry off all rain-water falling on and surface water draining to the private street, cul-de-sac, access road, pedestrian way or service lane.
(3) For the purposes of this regulation, the intensity of rainfall shall be calculated—
(a) where the Time of Concentration is less than 30 minutes, at the rate of not less than 150 mm/h; and
(b) where the Time of Concentration is 30 minutes or more than 30 minutes, at the rate of not less than 100 mm/h. (L.N. 294 of 1976)

25. Channels
(1) Every channel in any private street, cul-de-sac, access road and pedestrian way shall be—
(a) constructed of concrete not less than 150 mm in thickness nor less than 300 mm in width; (L.N. 294 of 1976; L.N. 439 of 1990)
(b) laid to a fall of 1 in 30 towards the kerb in cross-section; and 
(c) save as provided in paragraph (2), laid to a fall of not less than 1 in 100 in longitudinal section.
(2) Where the Building Authority is satisfied that it is impracticable to lay any channel to a fall of not less than 1 in 100 in longitudinal section, he may permit the channel to be laid to a fall of not less than 1 in 250.

### Building (Private Streets and Access Roads) Regulations 《建築物(私家街道及通路)規例》

26. Any work in public street to be carried out by Building Authority
(1) Where—
(a) the forming or laying out of any private street, cul-de-sac, access road or pedestrian way; or
(b) the provision of any means of access to a building fronting or abutting on a public street,
necessitates the carrying out of any work in or the alteration of any public street, such work or alteration shall be carried out by the Building Authority who may recover the cost thereof from the owner of the private street, cul-de-sac, access road, pedestrian way or building, as the case may be.
(2) Where, in contravention of this regulation, any work has been carried out otherwise than by the Building Authority, the Building Authority may remove, alter or demolish such work and may carry out such other work as he considers necessary, and may recover the cost of any work carried out under this paragraph as if such work had been carried out pursuant to the provisions of paragraph (1).

27. Power of Building Authority to waive requirements of regulations 9, 11, 12 and 13 and to require other work to be carried out in lieu thereof
Where, in any case, the Building Authority is satisfied that, owing to the nature of the ground or for other sufficient reason, compliance with the requirements of regulation 9, 11, 12 or 13 is impracticable, he may waive such requirement and, upon any such waiver may, by order in writing, require such street works to be carried out, in lieu of compliance with such requirement, as he considers necessary.

28. Power of Building Authority to waive requirements of regulation 16
Where adequate tests have been carried out to determine the bearing capacity of the ground forming the foundation of any carriageway and the results thereof have been submitted to the Building Authority, the Building Authority may, if he is satisfied with the tests and the results thereof, waive the requirements of regulation 16 and, upon such waiver may, by order in writing, require materials used in the surfacing of the carriageway to be based on the results of such tests.