Absorption of water should not be over 15%
At least 4 numbers of bars should be used for square column and 6 numbers of bars for circular column.
Minimum density of the slab should be 125 mm.
Lap slices are not recommended for the bar greater than 36 mm.
Water absorption of bricks should not surpass 15%.
PH value of the water should not be under 6.
Dimension tolerance for cubes should be +2 mm.