| 032453 Patterned Concrete Formwork
Formwork for patterned concrete surfaces shall be for fair face finish in plywood, milled timber boards metal or other panel material to provide straight, smooth as cast surfaces as specified or directed.
Patterned finish shall be formed with approved wrought boards of specified nominal width, having exposed grain and being arranged as shown on the drawings.
Boards shall be of adequate thickness and be jointed with groove and loose tongues. End of board jointing shall be tongued and grooved staggered and well distributed. The edges of boards shall have a nominal 2mm chamfer to form controlled fins.
The resulting concrete shall clearly show grain. Individual board marks shall be free from honeycombing and excessive air holes and shall be of uniform colour.
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