Deutsches Archäologisches Institut DAI in Rom

German Archaeologicial Institute in Rome — Structural safety for library loads and earthquake-proof with hybrid statics.

The Federal Republic of Germany supports the German Archaeological Institute in Rome. The 8-storey steal concrete frame building from 1963 with 6000 m² storey area has ribbed slabs with hollow-bricks should be enforced for library use and earthquake-proof. From Numerical calculations and a former loading test with water ballast, no adequate structural safety results. In March 2009 at adequate test areas the bearing capacity of a mineral resin-bonding was tested in situ to avoid a very expensive stud bond for the planned blinding concrete for the necessary slab stiffness. From the non-destructive evaluation of the limit stress resultant for the composit system "actual slab — knitting layer — structural concrete topping" the structural safety for library loads q = 6,0 kN/m² and seismic design could be verified with hybrid statics.
The loading tests in situ required controllable test loads up to ΣF = 360 kN for each ceiling panel have been accomplished during two weeks. The total equipment of about 8 tons was transported by truck to Rome.