Ensure that the position of the cover blocks is intact and not disturbed during concreting operations.
In case concrete is made at the site, closely supervise proper batching of ingredients, the water content, and the mixing and testing of fresh concrete.
Make sure the beams are first cast in layers and properly compacted with vibrators.
Ensure that a carpenter and helper are present below slab shuttering to ensure that the props and supports are not disturbed and that the shuttering remains intact during and after concreting.
Ensure that one bar bender is present, so that displacement of steel reinforcement does not take place.
Do not allow a very smooth finish to your concrete slabs.
Do not allow dry cement to be sprinkled during finishing. This will help you avoid micro shrinkage cracks.
Place chairs firmly and properly, so that the top reinforcement bars (for negative movement) are not disturbed during concreting.
Avoid formation of cold joints in the slab.
If you are concreting in the summer, cover your freshly cast slab with moist gunny bags for 4 to 5 hours after casting.
If it is rainy, windy, or very hot, cover the slab with tarpaulin to protect it from getting damaged.
To avoid plastic shrinkage cracks, do not allow drastic drying of green concrete.
Closely supervise the compaction and finishing process of concrete.
