Geometry of the push-out samples and view of

Figure 8. Experimental behaviour of connections.

Figure 8. Experimental behaviour of connections.

Figure 9. Deformation of specimen F1.M at maximum displacement.

Figure 8. The connection show a good initial stiffness, followed by a sudden lower branch, due to the yielding of the nails at the beam-boarding interface.

3.2 Test results and analysis of floor specimens

Two preliminary monotonic tests were performed to validate the new test set-up and investigate the behaviour of the unstrengthened floor specimens F1.M and F2.M, that constitute the basic floor configuration to which the strengthening methods will be applied. Also in this phase, the moisture content of the floor specimens was measured; according to UNI 9091, after their construction and before carrying out the tests, the mean value was around 12%.

The final phase of a test is depicted in Figure 9, whereas the load-displacement trend of the two

Figure 10. Comparison among load displacement curves of specimens F1.M and F2.M, and schematization proposed by UNI EN 12512.
Table 2. Results of shear test on floor specimens.

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