044 EXECUTION
0441 SAMPLES
Sample panels of each type of facing wall not less than one square meter in area including joint pointing, if finish is in pointing shall be prepared for approval by the Engineer. All construction thereafter shall in all respects comply with the approved sample.
Samples shall be maintained and kept in their original condition until permission to remove them is granted by the Engineer.
0442 CONSTRUCTION
Concrete and other surfaces to receive walls shall be clean from earth, dust, debris, etc and wetted before mortar is laid on the surface.
Where no concrete or other bedding material is provided under masonry works, a minimum thickness of 50mm aggregate shall be placed on the excavated bottom and the surface wetted before the application of mortar.
Walls shall be set out with rods for courses, opening heights, etc., and shall be built to the width, depth and heights as shown on drawings or directed by the Engineer.
Walls separated by concrete or other material shall be built plumb and with deviations of not more than 3 mm in 3 meters. Walls shall be carried with no portion higher than 1000mm above adjacent wall at any one time.
Wall shall be bonded as detailed on drawings or directed by the Engineer. Walls below grade shall be built in cement mortar only, and walls above grade in cement or Compo-mortar as specified in drawings or bill of quantities.
The best of workmanship shall be used in the construction of facing walls.
0443 CURING & PROTECTION
Walls shall be protected from premature drying and excessively high temperatures for at least 28 days from the date of building. The surface of walls shall be kept wet by the application of water for at least 7 days. Walls and their surfaces shall be protected from damage by other trade.
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