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Widespan Membrane Roof Structures 181
Fig. 11. 3D Renderings
connections. The location of the pressure taps has been chosen to cover the whole
roofing surface according to the Fig. 13, which shows also the influence area of each
pressure tap. These areas have been obtained performing a triangulation among the
pressure taps and linking together the barycentres of the identified triangles.
In the above figure the positions of the pressure taps are shown together with
their influence areas; each position identifies the position of both the tap at the
intrados and the tap at the extrados, which lay on the samevertical and are spaced
out by the thickness of the box structure of the roofing.
The pressure measurements have been performed using piezoelectric transducers
linked to the pressure taps through Teflon pipes (Fig. 14).