06/1168 - Change a Development Approval [As Published] · 132006.1168.02

fl.

water has been removed, a layer of cement mortar of similar composition to that embodied in the new
concrete, excluding the large aggregate and of plastic consistency, about 12 mm in thickness shall be
thoroughly broomed and brushed over the prepared surface and worked into all crevices and
depressions after which the new concrete shall be placed immediately so as to make a thoroughly
bonded and watertight joint.

6.10 Formwork
Formwork shall be in accordance with SAA Formwork Code AS 3610.

The Contractor shall supply, erect and maintain in good condition all forms necessary for shaping the
concrete.

All plans of forms and falsework must be submitted to the Superintendent for approval before their
construction is undertaken. All forms must be approved by the Superintendent before concrete is placed
and forms found unsatisfactory in any respect shall not be used.

Notwithstanding the approval of forms and falsework by the Superintendent, the Contractor shail bear full
responsibility for the safety of all forms and falsework, and for carrying out the work in full accordance
with the drawings and this specification.

All forms shall be constructed of wood or metal and shall be built mortar-tight and of sufficient rigidity to
prevent distortion due to the pressure of the concrete and other forces incidental to the construction
operations. Forms shall be constructed and maintained so as to prevent warping and the opening of
joints due to shrinkage of the timber.

All timber used in the manufacture of the forms must be approved by the Superintendent, and where
timber is used for formwork for exposed surfaces, the forms shall be made of dressed timber of uniform
thickness.

The forms shall be substantial and unyielding and shall be so designed that the finished concrete will
confom to the shape, lines and dimensions as called for on the drawings. All exposed concrete edges
shall have a 20 mm chamfer unless otherwise indicated and this shall be obtained by the use of angle
fillets in the angles of the forms. Exposed re-entrant corners shall have a 20 mm fillet unless otherwise
indicated.

The inside of forms shall be coated with non-staining mineral oil or other approved material which shall
be applied before the reinforcement is placed.

The method for holding forms in position shall be approved by the Superintendent. Any bolts supporting
forms shall be so greased and arranged that they may be removed from the concrete after removal of
forms without excessive jarring or hammering and without injury to the concrete surfaces by spalling or
otherwise. When the bolts have been withdrawn, the holes shall be filled with cement mortar and well
rammed into position. Tie wires passing through the concrete will not be permitted.

Where bolts or rods acting as internal ties are to be left in position, they shall be so arranged that when
the forms are removed no metal shall be within the clear cover requirements of any surface. Resulting
cavities shall be packed with cement mortar.

41/22382/11840 Girraween Sports Precinct 39
Earthworks Package