U n c o n v e n t i o n a l C o n s t r u c t i o n T e c h n o l o g y
443
After the analysis of the existing foundation, in order to verify the strength of the
columns, strength, Brinell tests were conducted on each column.
Thanks to the test results, it was possible to understand that the columns are made of
good material, which allow for their preservation and recovery for the new design
requirements, also considering that new live loads are present only on the ground floor
and the roof is supported by perimetric masonry.
The project provides new structures using structural glass and iron for both galleries. At
level +4.72m, these structures will be used as a floor, designed for carrying new live
loads. (4.0 kN/ m
2
) as requested by the owner.
The main structure is made up of a grid of steel beams (HEM 180) which are arranged
cross to the side of the courtyard, whilst the secondary structural grid is made up of
different steel beams (IPE200) placed at a distance of one meter from each other (Fig.
21)
Figure 21: Steel beams (main and secondary structures)
The anchorage of the existing cast iron columns is ensured by special retainers, which,
by means of crossing pins of a diameter of 20-22mm, are fixed to the existing structure.
Before being joined, they are injected with special shrinkage compensated cement
grouts.
The junction of IPE200 with HE180M is realized with bolts M20 (Fig. 22).
