1985 Ed.]
Building (Private Streets and Access Roads) Regulations
[CAP. 123
G5
10. The carriageway of any minor street shall, at the junction of such carriageway with the carriageway of a major street, be graded into the carriageway of such major street in such a manner as to avoid undulation on the major street.
11. (1) Subject to the provisions of paragraphs (2) and (3), no private street, cul-de-sac or access road shall have a gradient greater than 1 in 6.
(2) In every private street and cul-de-sac, the gradient shall, for a distance of 30 m from the junction of the private street or cul-de-sac with any street, not exceed 1 in 30.
(3) In every access road, the gradient shall, for a distance of 7.5 m from the junction of the access road with any street, not exceed 1 in 30.
12. (1) The radius of any horizontal curve in any private street or cul-de-sac shall be not less than 30 m measured to the centre line of the carriageway of the street or cul-de-sac.
(2) The radius of any horizontal curve in an access road shall be not less than 9 m, measured to the centre line of the carriageway of the access road.
13. Any vertical curve in a private street, cul-de-sac or access road shall be such that from a point 1 m above any part of the carriageway thereof a clear view can be obtained of the top of an object 1 m high at all distances along the carriageway up to 40 m from such point.
14. Where, under regulation 27, the Building Authority permits the radius of a horizontal curve in any private street or cul-de-sac to be less than 30 m, the carriageway thereof shall be gradually widened, on the outer edge of the curve, from the tangent points to the middle point of the curve so that, at the middle point of the curve, the widening is not less than that specified in Table III.
[Subsidiary]
No undulation on major street.
Gradients.
L.N. 294/76.
Horizontal curves. L.N. 294/76.
Vertical curves.
L.N. 294/76.
Widening of private streets and cul-de-sacs on curve in certain cases. L.N. 294/76
TABLE III
L.N. 294/76.
Width of Carriageway
Permitted radius of curve at centre line Minimum widening 6 m or less Less than 18 m 1.2 m 18 m to 24 m inclusive 1.0 m Over 24 m 0.6 m More than 6 m Less than 18 m 1.0 m 18 m to 24 m inclusive 0.6 m Over 24 m 0.3 mPage 5
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