Buy ready-mixed concrete for areas that require more than 3 m3/ 4yd:1 rather than mix it yourself – the time and labour saved by not having to mix the concrete by hand more than justifies the additional cost. Remember to have helpers standing by when the concrete arrives; 3m:I of cement weighs six tons – the equivalent of about 60 barrow loads – and it must be laid within 21 hours, or less if the weather is extremely hot. Also make sure that all preparation work – such as laying and levelling out the hardcore. Clearing access for the lorry and fitting all the necessary form-work in position – has been completed wel1 in advance of pouring.
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