PSI - Issue 44

Giuseppina De Martino et al. / Procedia Structural Integrity 44 (2023) 1800–1807 Giuseppina De Martino et al./ Structural Integrity Procedia 00 (2022) 000–000

1806

7

250 1500 Mean and strength. costs [€/m 2 ] 500 750 1000 1250

0 1500 Mean repair and strength. costs [€/m 2 ] 250 500 750 1000 1250

0

% SLE

% SLE

(a)

(b)

Fig. 5 -Mean repair and global strengthening costs of AMU located (a) IHC L’Aquila and (b) IHC Other as a function of percentage of building surface within the AMU with E usability rating.

Concerning of the mono-rating AMU, the mean repair and global strengthening intervention cost of buildings OHC on average was lower than those of AMU IHCL’Aquila and IHCOther due to the influence of valuable elements of buildings IHC with respect to buildings OHC. The mean cost ratio between grants related to funding requests OHC and IHCOther was 1.30. The mean cost ratio between grants related to funding requests OHC and IHCL’Aquila was 3.65. In order to better understand the influence of valuable elements of buildings IHC with respect to OHC buildings, it’s interesting to analyse only for the 439 mono-rating AMU the cost as a function of the AMU category (i.e. AMU made of ordinary buildings; buildings with historic-architectural valuable elements; building with landscape interest building of cultural interest allocated or made of building belonging to different categories) [see Fig. 6]. The mean unitary costs of AMUL’Aquila and AMUOther are greater than those allocated for buildings OHC by percentage factors 133% and 120% for AMU with buildings with valuable elements, 168% and 240% for AMU with building belonging to different categories; 164% for AMU with building with landscape interest and 221% and 189% for buildings of cultural interest. Concerning the ordinary buildings, the cost is more or less the same OHC and IHC.

AMU tipology

1.698,47

Cultural interest

1.455,28

1.333,99

Landscape Interest

1.288,89

With different categories of buildings

1.073,82

1.024,17

Historic-architectural valuable elements

924,66

776,39

Ordinary

722,88

768,00

0 250 500 750 1000 1250 1500 1750 2000

Mean repair and strength. cost [€/m 2 ]

IHC

IHC

OHC

L'Aquila

Other

Fig. 6 – Mean repair and global strengthening costs of OHC buildings and IHC AMU in function of building/AMU categories

5. Conclusion

The main aspects of the reconstruction policies adopted after April 2009 earthquake that hit the Abruzzo Region in Italy have been reported and discussed in the paper. Two different funding models have been adopted in order to define the public grant amount to restore private buildings outside historical centres, OHC, (analytical model, managed