|Self-Help Construction of 1-Story Building (Peace Corps, 1977, 235 p.)|
|Directions for construction|
|Construction of foundation footings|
The strength and water-tightness of concrete improve with age. Proper "curing. is important to get the aging process started well.
As concrete hardens, the water in the mix gradually evaporates. ' Prolonging that process increases the strength and water-tightness of concrete.
Immediately after the concrete has set, put a wet covering over it. The covering may be made with wet burlap bags, or a thin layer of wet sand, or wet straw. The covering should be sprinkled with water 2 or 3 times a day for at least 7 days.