Street Works (Private Street Works) Regulations

Street Works Act

(CHAPTER 320A, Section 53)

Rg 1

REVISED EDITION 1996

(15th May 1996)

[1st September 1995]

Citation

1. These Regulations may be cited as the Street Works (Private Street Works) Regulations.

Definitions

2. In these Regulations, unless the context otherwise requires —

“approved”, in relation to a street plan, means approved by the Authority;

“Authority” means the Land Transport Authority of Singapore established under the Land Transport Authority of Singapore Act [Cap. 158A];

“specifications” means the Public Works Department General Specifications issued by the Public Works Department in relation to street works or any other specification issued or prescribed by the Authority from time to time;

“street plan” means the plan relating to the construction of a new street as referred to in section 18 of the Act.

Application

3. These Regulations shall apply to the construction of any new private street commencing on or after 1st September 1995.

Street plan

4.—(1) Any person who intends to construct any new street shall appoint a civil engineer who is a professional engineer registered under the Professional Engineers Act [Cap. 253] for the purpose of —

(a)	preparing and submitting the street plan to the Authority; and
(b)	supervising the construction of the new street.

(2) Notwithstanding paragraph (1), the Authority may, in its discretion, permit any other engineer who is registered as a professional engineer under the Professional Engineers Act to submit the street plan.

(3) The street plan shall comply with these Regulations.

Layout plan

5. A copy of the layout plan approved by the competent authority under the Planning Act [Cap. 232] for the land to be used for the construction of a new street shall be submitted to the Authority before the street plan may be approved.

Approved street plan not to be amended without approval

6. No person shall amend any street plan approved by the Authority without the prior approval of the Authority.

Scales of plan

7. Where the following plans are required to be submitted, they shall be drawn to the following scales:

(a)	location plans and key plans — 1:20,000, 1:10,000 or 1:5,000;
(b)	site plans, traffic plans and topographical survey plans — 1:100, 1:500 or 1:1,000;
(c)	longitudinal section plans — horizontal 1:500 or 1:1,000 and vertical 1:50 or 1:100; and
(d)	cross-sectional plans and detailed drawings — 1:20, 1:10, 1:5 or 1:1.

Site plan

8.—(1) The site plan shall show —

(a)

the line of the new street;

(b)

the width of the new street, which shall include the space occupied by the drains but exclude the width of embankments and earth slopes (if any);

(c)

the position and width of the new carriageway, footways, service verges, turf and tree planting areas;

(d)

the mode of drainage of the new street, in particular —

(i)	the positions, levels and dimensions of drains; and
(ii)	the positions of the summits (if any) and the directions of flow,

with the same information given in respect of existing drains (if any) into which the new drains are to discharge;

(e)

all existing rivers, streams and drains, showing lines, levels and cross-sections;

(f)

the positions, levels and dimensions of culverts (if any) in the new drains at the intersections or entrances of the proposed streets, with the same information given in respect of culverts across existing and new streets;

(g)

the positions, levels and dimensions of culverts (if any) at the entrances of the premises fronting, adjoining or abutting the new street;

(h)

reference marks indicating the lines along which the longitudinal sections have been taken;

(i)

the position and value of the nearest Government Bench Mark and 2 temporary Bench Marks from which levels on the longitudinal sections have been computed;

(j)

the manner in which the corners of the new street are to be rounded off;

(k)

the positions, number and types of street lightings to be provided with specifications;

(l)

the tree planting scheme for the new street; and

(m)

the cadastral boundaries.

(2) All existing and proposed features shall be clearly differentiated.

Traffic plan

9. The traffic plan shall show the traffic scheme proposed for the new street and adjoining existing streets.

Topographical survey plan

10. The topographical survey plan shall show —

(a)	the general topography of the land;
(b)	the road-related features; and
(c)	the cadastral boundaries.

Longitudinal section plan

11.—(1) The longitudinal section plans shall consist of —

(a)	a plan showing the longitudinal section through the centre of the carriageway; and
(b)	a plan showing the longitudinal section through each side of the carriageway.

(2) The plans referred to in paragraph (1) shall show —

(a)

the reference marks indicating the line along which the section has been taken;

(b)

the existing ground levels;

(c)

the road levels and the gradient of the new street, with its connection to any existing street;

(d)

the invert levels and gradients of —

(i)	new drains (the invert levels being indicated at each change of gradient); and
(ii)	the existing drains into which the new drains will discharge;

(e)

the positions and dimensions of culverts (if any) where drains cross existing roads; and

(f)

suitable vertical curves wherever changes of gradient occur.

(3) For the purpose of paragraph (2)(f) —

(a)	the minimum length of a vertical curve should be at least 150 metres if the width of the road reserve is 26.2 metres or greater; and
(b)	all levels are to be indicated at intervals of not more than 30 metres.

(4) All existing and proposed features should be clearly differentiated in the longitudinal section plans.

(5) Where the longitudinal section has a gradient —

(a)	steeper than 1 in 10, the carriageway shall be of suitably designed concrete construction, but in no circumstances shall the gradient exceed 1 in 8; and
(b)	steeper than 1 in 30, the junction of the new street with other street shall be designed so as to provide a minimum length of 10 metres with a gradient of not greater than 1 in 50 before it meets the other street.

Cross-sectional plan

12.—(1) The cross-sectional plans of streets shall show —

(a)	the positions, dimensions and details of the construction of the carriageway, kerbs, footways, sidetables, scupper drains and roadside drains within the boundaries of the new street;
(b)	the diameter of scupper drains and the distance between them; and
(c)	the slopes for both cut and fill (if any).

(2) The slopes referred to in paragraph (1)(c) shall not, unless otherwise determined by soil investigation and analysis, be steeper than —

(a)	a ratio of 1½ horizontal to 1 vertical where the heights of cut or fill are less than 2 metres; and
(b)	a ratio of 2 horizontal to 1 vertical where the heights of cut or fill are 2 metres or more.

Construction of private street

13. The construction of a private street and the materials used therein shall conform to the specifications.

Design and construction of pavement, etc.

14.—(1) The pavement structure of the carriageway, footways, kerbs, scupper drains and roadside drains shall be of such design and construction as the Authority may direct in writing from time to time.

(2) The normal crossfall of the carriageway shall be 1 in 36 and shall slope straight from one edge of the carriageway to the other edge of the carriageway.

(3) Where a camber is required, the 2 slopes shall be joined in the centre by a suitable vertical parabolic curve.

(4) The carriageway shall be suitably super-elevated along curves.

(5) The position of footways shall be in accordance with the standard cross-section of the proposed road.

(6) Roadside drains shall cater for the flow of stormwater.

(7) Discharge calculations and proposed cross-section of drains must be submitted for the approval of the Head, Drainage Department.

Bridges and culverts

15.—(1) The sizes of the bridges and culverts shall be such as to permit the full discharge of the drains over which such bridges and culverts pass.

(2) Detailed calculations of discharge shall be submitted for the approval of the Head, Drainage Department, Ministry of the Environment.

(3) Bridges and culverts shall be designed in accordance with the requirements of British Standards BS 5400 steel, concrete and composite bridges, Part 1 to Part 10.

(4) The following loads and effects shall be considered in the design of all structures:

(a)	dead load;
(b)	superimposed dead load;
(c)	live load;
(d)	wind load;
(e)	temperature effects;
(f)	restraints at bearings and supports;
(g)	effects of shrinkage and creep in concrete;
(h)	erection forces and effects;
(i)	differential settlement; and
(j)	effects of bearing replacements.

(5) Loads for a vehicular bridge design shall comply with the composite version of BS 5400: Part 2, which forms an appendix to the UK Department of Transport’s Departmental standard BD 37/88, subject to the following modifications:

(a)

HA Loading

(i)

Uniformly Distributed Load (UDL)

The nominal HA UDL shall be increased by 20%.

(ii)

Wheel Load

A separate load case of an axle consisting of 2 number of 120KN wheel loads space at 2 metres apart transversely should be considered in the local effect design. This load case is in addition to the 100 KN HA wheel load case specified in BS 5400 Part 2.

(iii)

Longitudinal Braking and Traction Load

The nominal longitudinal braking and traction load for HA loading shall be 10KN/M of loaded length plus 200KN, subject to a maximum of 800KN, applied to an area of one notional lane width multiplied by the loaded length.

(b)

HB Loading

units of HB shall be considered. Only 1 HB loading case shall be considered on the bridge or culvert at any one time. The HB loading shall be restricted to the centre 5-metre strip of the carriageway, with all other lanes closed to traffic.

(c)

Unless otherwise required, culverts giving access to internal driveways of a residential development shall be designed for HA loading only.

Construction to be under charge of professional engineer

16.—(1) The construction of any street shall be supervised by a civil engineer who is a professional engineer registered under the Professional Engineers Act [Cap. 253].

(2) The professional engineer shall ensure that the street works are carried out in accordance with the approved street plan and the specifications.

(3) Before work is carried out, the professional engineer supervising the construction of a new street shall check with the relevant authorities the locations of their electric cables, water mains and other installations and he shall take every precaution to protect them and shall be fully responsible for any damage to any of the electric cables, water mains and other installations caused by or arising out of the street works.

(4) The professional engineer supervising any street works shall be liable for any damage caused to any existing street, drain or Government property.

(5) The Authority or any person authorised by it may, from time to time, check on any street works.

(6) If any part of the street is not constructed in accordance with the approved street plan or the specifications, the Authority may, in its discretion, order such part to be demolished or order the performance of such tests as it may consider necessary for verifying the quality of the work.

(7) The cost of any demolition or tests carried out under paragraph (6) shall be borne by the person constructing the street or be deducted from the deposit made under section 20 of the Act.

Accredited checkers for design of structural elements

17.—(1) The design of all key structural elements of any proposed new street shall be checked and certified by an accredited checker appointed by the person intending to construct the new street.

(2) The key structural elements to be checked and certified by the accredited checker shall be —

(a)	any box culvert;
(b)	any reinforced concrete retaining wall with an exposed height exceeding 1.0 metre or any bore-pile wall, sheet-pile wall, diaphragm wall, reinforced earth wall or crib wall;
(c)	any bridge, flyover, viaduct or pedestrian overhead bridge;
(d)	any tunnel for the use of vehicles or pedestrians;
(e)	any overhead gantry sign; and
(f)	any other parts of a street which are essential for the stability or safety of the street.

(3) Section 17 of the Building Control Act [Cap. 29] shall apply, with the necessary modifications, to an accredited checker appointed under this regulation to check and certify the key structural elements of the proposed new street.

Duties of accredited checkers

18.—(1) It shall be the duty of an accredited checker to —

(a)	evaluate, analyse and review the design of the key structural elements of the proposed new street as contained in the plans relating to the construction thereof and to perform such original calculations with a view to determining the adequacy of the key structural elements to be constructed, or which will be affected by street works carried out in accordance with those plans; and
(b)	verify that the design of the key structural elements are consistent with the street plan and any amendment thereto.

(2) Without prejudice to paragraph (1), an accredited checker shall, in carrying out his duties in relation to any plans for the construction of a new street —

(a)	determine and use the code of practice adopted in the preparation of the structural design in those plans;
(b)	check the design loading;
(c)	check the standards and specifications of materials to be used in the street works;
(d)	ascertain the structural design concept used and identify the key structural elements;
(e)	analyse all key structural elements and the foundation system of any structure to be erected or affected by street works carried out in accordance with those plans;
(f)	determine the stability of the structure;
(g)	check the structural detailing; and
(h)	determine the adequacy of other aspects of the design which are peculiar to the street to be constructed or affected by the street works and which are essential to the structural integrity of the street.

(3) It shall be the duty of the accredited checker to notify the Authority forthwith of any contravention or non-compliance with the provisions of the Act or any regulations made thereunder or the specifications in connection with the structural design of any plans for the construction of a new street.

(4) Nothing in paragraph (3) shall impose any such duty on an accredited checker in respect of any such contravention or non-compliance which he did not know and could not reasonably have discovered.

Certification of adequacy of key structural elements

19. An accredited checker shall, without delay after performing his duty in relation to any plans for the construction of a new street, prepare and submit to the person for whom the street works are to be carried out —

(a)	a certificate in the form set out in the First Schedule;
(b)	an evaluation report including the analysis and calculations performed by the accredited checker; and
(c)	a declaration that he has no professional or financial interest in the street works.

Inspection and test by Authority

20.—(1) For the purpose of satisfying itself that a private street may be declared to be a public street under section 26 of the Act, the Authority may carry out such inspection and tests as it considers necessary.

(2) Where such inspection and tests have to be carried out by the Authority, the owners of the private street or the owners of the premises fronting, adjoining or abutting the street, as the case may be, shall pay to the Authority the charges set out in the Second Schedule.

(3) Where such inspection and tests are not carried out by the Authority, the owners of the private street or the owners of the premises fronting, adjoining or abutting the street, as the case may be, shall arrange with any laboratory approved by the Singapore Productivity and Standards Board for the testing of the materials used.

(4) Where —

(a)	the owners of the premises fronting, adjoining or abutting on a newly constructed private street have requested that the Authority declare the street as a public street under section 26 of the Act; and
(b)	any inspection or test carried out under this regulation reveal that the materials used in the construction of the private street do not comply with the standards required by the specifications but nevertheless fall within the acceptable limits stipulated in the specifications,

the Authority may, before acceding to the request to declare the private street as a public street, require the owners of the premises fronting, adjoining or abutting on the newly constructed private street to pay to the Authority a road maintenance fee computed according to the Third Schedule, which sum shall be applied by the Authority towards the maintenance or improvement of the street after it has been declared as a public street.

Transitional provisions

21. Any approval, requisition, order, direction, notice or submission issued, made or given under the revoked Local Government Integration (Street Works) Regulations shall be treated as an approval, requisition, order, direction, notice or submission issued, made or given under these Regulations and have the same force and effect as an approval, requisition, order, direction, notice or submission issued, made or given under these Regulations.

[Rg 3.]

Search within Legislation