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Construction Concrete Slabs
After the walls have been constructed, these slabs of reinforced concrete are used to form the floor/ceiling of the rooms. The slabs have multiple holes running the length of the slab to increase the strength, decrease the weight, decrease the amount of cement used, and to decrease the costs. There are tens of thousands of these slabs by the side of roads everywhere you go. It takes a lot of muscle to steal one of these.
This is a rural cooperative unit that makes the concrete slabs. They first pour a very flat large concrete floor to put the slabs on. A machine forms the slabs much as an automatic curb machine works that you sometimes see in the USA. The man is keeping the concrete wet so it can cure properly. All around you can see their product ready for sale and transport. They pour the slabs on plastic so they will not stick to the concrete floor.