
The church school is composed of two temporary buildings made of bricks at
a very low cost. The roof is only 8 cm thick but the use of a special
shape gives a very strong result. The shape is a "ruled surface", a mathematical term that means that the
surface is a set of straight lines. It makes it very simple to build it
with bricks. The surface is supported by two quincunx undulations and so
the result is strong and self porting. See the result on the picture. Easy to build, very
strong, money saving, I will add also a functional advantage, the icing
on the cake: because this roof does not need any foundation wall inside, the two
partition walls can be moved to reconfigure the classrooms. With a flat
roof, the thickness would really be more important, and would have
required more expensive materials and technics and also foundation walls. I
have forgotten only one advantage about this structure, last but not
least, it is beautiful!