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Plan the job fully before starting the work. |
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Following removal of topsoil, prepare a sound base for concrete on
firm dry clay or on compacted gravel. 75-100mm of compacted hardcore finished with sand
should be placed in areas subject to heavy traffic. |
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Fix side forms firmly using timber or metal pegs. |
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The minimum thickness of paths should be 75mm and for other paved areas
with vehicle access the thickness should be increased to 100mm. For slabs or driveways,
divide the area into bays not greater than 4 metres wide and 6 metres long. For garden
paths the length between joints should not exceed 2 metres and joints should be placed at
junctions or a change of section. |
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Joints can be formed in the wet concrete by using a timber or metal strip
to form a groove 20-25mm deep, 10mm wide and sealed if necessary. Alternatively a filler
strip of hardboard the same depth as the slab can be used to form a joint. |
