Kingscote Streets Upgrades - Kangaroo Island Council

Wherever the work of placing concrete is delayed until the concrete has taken its initial set, the point
of stopping shall be deemed a construction joint.
Construction joints shall be located to maintain the spacing of shrinkage joints and shall be avoided
in entranceway inverts, pram inverts and radii at street corners.
The construction joints shall be straight and perpendicular to the kerb face and vertical in the kerbs
and shall be tooled off to provide a V joint. The concrete kerb and gutter on either side of the
construction joint shall be finished to the line and levels as shown on the drawings with no difference
in line or level across the joint.
8.3.4 Kerb Ramps
Kerb ramps shall be constructed integrally with the gutter and shall include surface tactile indicators
as detailed in the drawings.
Shrinkage Joints shall be provided at the intersection of the kerb ramp and the adjacent kerb and
gutters on either side. Tool joints shall be provided in the kerb ramps as detailed in the drawings.
The kerb ramps shall be finished with a non-slip broom finish. The alignment of the broom finish
shall be perpendicular to the kerb ramp.
8.3.5 Drainage Pit Aprons
Drainage pit aprons shall be constructed integrally with the drainage pit to the alignment as detailed
on the drawings.
8.3.6 Stormwater Outlets
A galvanised steel stormwater outlet to suit the kerb profile shall be provided for each residential
property as shown on the design drawings. The invert of the outlet shall be 5 mm above the invert
of the gutter.
Where there is no existing stormwater outlet, the stormwater outlet shall be provided on the low side
of each property or as nominated on site by the Superintendent.
Where there are existing stormwater outlet pipes from adjacent properties, a stormwater outlet shall
be provided to match the existing. Where required the existing outlet pipes shall be adjusted or relaid
as necessary to maintain proper falls and drainage. Any pipe replacement shall be made using
90 mm nominal diameter uPVC pipe or approved equivalent, or shall be equivalent to the existing
construction.
8.3.7 Backfilling of Kerbs
Prior to the installation of the pavement basecourse the kerbing shall be backfilled. The Contractor
shall ensure the kerbing is sufficiently cured prior to backfilling and care should be taken to protect
the kerbing from damage during backfilling operations.
8.4 Quality Requirements – Kerbing
8.4.1 Inspections
The following Hold Points are required during the construction of kerbing:
• H-K 1
• H-K 2
First concrete pour. (subsequent pours are witness points)
Water testing of kerbing prior to installation of adjacent structure
The following Witness Points are required during the construction of kerbing:
• Installation of curing compound
• Second pour and any subsequent concrete pours
• Backfilling curing prior to installation of base course.
Ref No. 20120236SA1 Kingscote Streets Upgrades Technical Specification 40