20
10
30
Diagram 1. Large Green Brick (Walls)
Dimensions in cm
green brick (diagram 4, p19) which is
used for the roof. Once the mixture
has been beaten the bricks can be
formed in one of two ways:
Method 1. Removing water in the
moulding cast: Slope Moulding
The metal or wooden moulding casts
must be washed and cleaned in a
bucket or container full of water. Next,
the mud must be cut and shaped in
the moulding cast, before the cast is
removed. The mud should be one
firm piece with no signs of cracks
or unevenness. The mud should be
pressed so that there are sharp well
defined corners.
14
Practical Answers Sudan
The Construction of the Timberless House Model
Pic 4. A participant using a moulding cast for brick production
Method 2. Removing water using sand: Sand Moulding
Once again the cast should be cleaned in water in a bucket
or container. This time the mould is lined with sand to form
an insulated layer so the mud can slide out easier when the
mould is lifted. This gives the brick extra quality and more
rigid edges. However the downside of this technique is that it
is slower so invariably the builders prefer the first method.
Drying the bricks is the next stage and is considered a key
part of the brick making process. The bricks should be left in
the open air to dry for a total of three days until all the water
dries out. It is better that the bricks are made at the same
building site so that they do not crack while being moved.