Friday, October 5, 2012

Rainwater tanks

The past month has seen a lot of digging, and a lot of brick making at the school house. There are two 30,000 litre underground rainwater tanks under construction.
The company that is doing all the work (owned by the son of someone my parents knew when they lived in Tanzania back in the 70s incidentally - small world!) is committed to using the materials dug up on site to produce all the bricks for the tanks, and providing clean fluoride free water for people to drink and cook with.
It took a week or so to dig the first hole in the front yard, and it was only when they were nearing the end did the workmen reach the clay soil suitable to make the bricks.

Then began the very labour intensive task of making each brick, individually, in a hand operated machine that takes 3 men to load it and compress the sifted soil, cement and a small amount of water.
The bricks were then covered in plastic but watered regularly.

The fundis were not/are not happy with their photo being taken, so I have been trying to sneak a few pictures of the process through the windows, but they aren't so clear as to show what is happening.

The bricks are a curved shape, and the first tank was almost completed when I left school this afternoon. They were in the process of building some platforms to stand on to complete the last layers as the walls were too tall to add to anymore.

Now the digging will begin again in the backyard to build the second tank.

1 comment:

  1. The rules for rainwater harvesting are simple. For every square metre of roof area create a 20 litre capacity for storage or recharge. For every square metre of paved area create a 10 litre capacity for storage or recharge. If you make a recharge well make it at least 3 metres deep.
    underground water tank