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Close observation of the wall of the audience
pavilion reveals different building techniques that change from the bottom
to the top.
- The lower part (up
to 1 meter) was essentially built with rows of bricks fixed with alternate
layers (2cm thick) of apparently lime and sand based mortar.
- Above 1 meter, the rows of brick are fixed by alternate layers (about
10 cm thick) of a mortar probably prepared with lime, sand and local earthen
material.
- At 2 meters, the brick and mortar structure reverts to that below 1
meter where the thickness of the mortar layers is not more than 2 cm.
- The upper part of the wall (above 3 meters) appears to be built with
a very different technique: large blocks of pressed earth (with some lime?)
are positioned next to each other without any apparent link between them.
Each block measures about 0.5 x 1.5 meters and extends across the whole
1-metre thickness of the wall.
In
terms of typology it is possible to distinguish:
- Mortar: two kinds are present, one used for fixing bricks and
a second used for fixing the glazed tiles now completely lost.
- Plaster: two superimposed layers were evident in the upper part
of the wall. Their stratification clearly shows that they were applied
at different times.
- Bricks: they seem to be of quite good quality.
- Zellij tiles: not the object of this study.
See
also report to the ICCROM Library
web site.
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