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Public residential buildings make a large portion of the European existing stock and they quite often require deep renovation interventions. A methodology for setting priorities and targeting regeneration investments should be defined relying on the increasing use of building information modelling (BIM) tools even for managing existing buildings. The aim of this paper is to integrate the evaluation process into BIM Revit software developing a specific plug-in, a Decision support system (DSS) that will help to identify the most appropriate flats to be transformed. It is based on measuring three indicators: Usability, Fragmentation, and Constructive Modifiability. Through their weighted average it is possible to obtain a final transformability score. The proposed approach has been tested on a case study chosen within the 1st P.E.E.P. (1st public plan for council and affordable housing) that has been approved in Rome in 1964. The results demonstrate that the transformability of apartments is related mainly to the Constructive Modifiability indicator and buildings with reinforced concrete frames show higher scores. A widespread application of such a methodology on large real estate portfolio may lead stakeholders involved in housing management investments in clear choices related to maintenance of buildings.
Giovanna Acampa; Lorenzo Diana; Giorgia Marino; Rossella Marmo. Assessing the Transformability of Public Housing through BIM. Sustainability 2021, 13, 5431 .
AMA StyleGiovanna Acampa, Lorenzo Diana, Giorgia Marino, Rossella Marmo. Assessing the Transformability of Public Housing through BIM. Sustainability. 2021; 13 (10):5431.
Chicago/Turabian StyleGiovanna Acampa; Lorenzo Diana; Giorgia Marino; Rossella Marmo. 2021. "Assessing the Transformability of Public Housing through BIM." Sustainability 13, no. 10: 5431.
Nowadays, energy retrofit interventions on the existing building stock are of paramount importance towards energy consumption and emissions reductions in the construction sector. Such interventions are also crucial in the view of increasing cities resilience with respect to the intensification of frequent extreme weather events, such as cold spells and heatwaves. Indeed, a wide portion of our cities is dated and lacking with respect to performances. These are the motivations behind the proposed sustainable approach, which deals with the environmental perspective, but also with social and economic ones, by proposing the retrofit of the Public Residential Building stock (Edilizia Residenziale Pubblica, ERP). The objective is to improve the energy performance of ERP stock by means of construction materials coming from local km0 agricultural waste and by-products. The research was conducted by means of in field and numerical analyses of the energy performances of a relevant case study building. Different layers of bio-based, recycled construction materials for the envelope were tested with respect to their efficacy in improving the energy performance of a case study building. The results demonstrate that the most performing envelope solutions and their combination are able to reduce up to 36% of the yearly energy consumption for heating.
Federica Rosso; Arianna Peduzzi; Lorenzo Diana; Stefano Cascone; Carlo Cecere. A Sustainable Approach towards the Retrofit of the Public Housing Building Stock: Energy-Architectural Experimental and Numerical Analysis. Sustainability 2021, 13, 2881 .
AMA StyleFederica Rosso, Arianna Peduzzi, Lorenzo Diana, Stefano Cascone, Carlo Cecere. A Sustainable Approach towards the Retrofit of the Public Housing Building Stock: Energy-Architectural Experimental and Numerical Analysis. Sustainability. 2021; 13 (5):2881.
Chicago/Turabian StyleFederica Rosso; Arianna Peduzzi; Lorenzo Diana; Stefano Cascone; Carlo Cecere. 2021. "A Sustainable Approach towards the Retrofit of the Public Housing Building Stock: Energy-Architectural Experimental and Numerical Analysis." Sustainability 13, no. 5: 2881.
Assessing seismic vulnerability at large scales requires accurate attribution of individual buildings to more general typological classes that are representative of the seismic behavior of the buildings sharing same attributes. One-by-one evaluation of all buildings is a time-and-money demanding process. Detailed individual evaluations are only suitable for strategic buildings, such as hospitals and other buildings with a central role in the emergency post-earthquake phase. For other buildings simplified approaches are needed. The definition of a taxonomy that contains the most widespread typological classes as well as performing the attribution of the appropriate class to each building are central issues for reliable seismic assessment at large scales. A fast, yet accurate, survey process is needed to attribute a correct class to each building composing the urban system. Even surveying buildings with the goal to determine classes is not as time demanding as detailed evaluations of each building, this process still requires large amounts of time and qualified personnel. However, nowadays several databases are available and provide useful information. In this paper, attributes that are available in such public databases are used to perform class attribution at large scales based on previous data-mining on a small subset of an entire city. The association-rule learning (ARL) is used to find links between building attributes and typological classes. Accuracy of wide spreading these links learned on <250 buildings of a specific district is evaluated in terms of class attribution and seismic vulnerability prediction. By considering only three attributes available on public databases (i.e., period of construction, number of floors, and shape of the roof) the time needed to provide seismic vulnerability scenarios at city scale is significantly reduced, while accuracy is reduced by <5%.
Lorenzo Diana; Julien Thiriot; Yves Reuland; Pierino Lestuzzi. Application of Association Rules to Determine Building Typological Classes for Seismic Damage Predictions at Regional Scale: The Case Study of Basel. Frontiers in Built Environment 2019, 5, 1 .
AMA StyleLorenzo Diana, Julien Thiriot, Yves Reuland, Pierino Lestuzzi. Application of Association Rules to Determine Building Typological Classes for Seismic Damage Predictions at Regional Scale: The Case Study of Basel. Frontiers in Built Environment. 2019; 5 ():1.
Chicago/Turabian StyleLorenzo Diana; Julien Thiriot; Yves Reuland; Pierino Lestuzzi. 2019. "Application of Association Rules to Determine Building Typological Classes for Seismic Damage Predictions at Regional Scale: The Case Study of Basel." Frontiers in Built Environment 5, no. : 1.
This article addresses seismic vulnerability assessment at an urban scale using mechanical methods, more specifically potential improvements by involving typological curves instead of standard capacity curves and by using accurate displacement demand determination for reliable building damage prediction. The impact in terms of damage grades is computed for two typical Swiss cities. In Europe, seismic-vulnerability assessment is usually performed using the Risk-UE methodology, which involves an empirical approach (LM1 method) and a mechanical approach (LM2 method). The LM2 method contains standard capacity curves of conventional building types for computation of the corresponding damage grades. These capacity curves have been developed for southern Europe and are not optimal for describing features of other building stocks. New specific refined capacity curves are developed for northern Europe. Eurocode 8 prescribes the computation of displacement-demand for seismic assessment of existing building through a process based on the N2 method. However, the inaccuracy of the N2 method in certain conditions has already been studied. Therefore, modifications of N2 method have been proposed to improve the reliability of displacement-demand determination. In this study, the impact of typological capacity curves and the modified N2 method are investigated independently. Results show that both refinements contribute to improve the damage-grade distribution assessment.
L. Diana; P. Lestuzzi; S. Podestà; C. Luchini. Improved Urban Seismic Vulnerability Assessment Using Typological Curves and Accurate Displacement Demand Prediction. Journal of Earthquake Engineering 2019, 25, 1709 -1731.
AMA StyleL. Diana, P. Lestuzzi, S. Podestà, C. Luchini. Improved Urban Seismic Vulnerability Assessment Using Typological Curves and Accurate Displacement Demand Prediction. Journal of Earthquake Engineering. 2019; 25 (9):1709-1731.
Chicago/Turabian StyleL. Diana; P. Lestuzzi; S. Podestà; C. Luchini. 2019. "Improved Urban Seismic Vulnerability Assessment Using Typological Curves and Accurate Displacement Demand Prediction." Journal of Earthquake Engineering 25, no. 9: 1709-1731.
In Europe, computation of displacement demand for seismic assessment of existing buildings is essentially based on a simplified formulation of the N2 method as prescribed by Eurocode 8 (EC8). However, a lack of accuracy of the N2 method in certain conditions has been pointed out by several studies. This paper addresses the assessment of effectiveness of the N2 method in seismic displacement demand determination in non-linear domain. The objective of this work is to investigate the accuracy of the N2 method through comparison with displacement demands computed using non-linear time-history analysis (NLTHA). Results show that the original N2 method may lead to overestimation or underestimation of displacement demand predictions. This may affect results of mechanical model-based assessment of seismic vulnerability at an urban scale. Hence, the second part of this paper addresses an improvement of the N2 method formula by empirical evaluation of NLTHA results based on EC8 ground-classes. This task is formulated as a mathematical programming problem in which coefficients are obtained by minimizing the overall discrepancy between NLTHA and modified formula results. Various settings of the mathematical programming problem have been solved using a global optimization metaheuristic. An extensive comparison between the original N2 method formulation and optimized formulae highlights benefits of the strategy.
Lorenzo Diana; Andrea Manno; Pierino Lestuzzi. Seismic displacement demand prediction in non-linear domain: Optimization of the N2 method. Earthquake Engineering and Engineering Vibration 2019, 18, 141 -158.
AMA StyleLorenzo Diana, Andrea Manno, Pierino Lestuzzi. Seismic displacement demand prediction in non-linear domain: Optimization of the N2 method. Earthquake Engineering and Engineering Vibration. 2019; 18 (1):141-158.
Chicago/Turabian StyleLorenzo Diana; Andrea Manno; Pierino Lestuzzi. 2019. "Seismic displacement demand prediction in non-linear domain: Optimization of the N2 method." Earthquake Engineering and Engineering Vibration 18, no. 1: 141-158.
L. Diana; Andrea Manno; P. Lestuzzi; S. Podesta; C. Luchini. Impact of displacement demand reliability for seismic vulnerability assessment at an urban scale. Soil Dynamics and Earthquake Engineering 2018, 112, 35 -52.
AMA StyleL. Diana, Andrea Manno, P. Lestuzzi, S. Podesta, C. Luchini. Impact of displacement demand reliability for seismic vulnerability assessment at an urban scale. Soil Dynamics and Earthquake Engineering. 2018; 112 ():35-52.
Chicago/Turabian StyleL. Diana; Andrea Manno; P. Lestuzzi; S. Podesta; C. Luchini. 2018. "Impact of displacement demand reliability for seismic vulnerability assessment at an urban scale." Soil Dynamics and Earthquake Engineering 112, no. : 35-52.
Yves Reuland; Lorenzo Diana; Pierino Lestuzzi; Ian F.C. Smith. Structural Resilience through Model-Based Data Interpretation: From Building to City-Scale Post-Seismic Assessment. Proceedings of the 6th International Symposium on Reliability Engineering and Risk Management 2018, 1 .
AMA StyleYves Reuland, Lorenzo Diana, Pierino Lestuzzi, Ian F.C. Smith. Structural Resilience through Model-Based Data Interpretation: From Building to City-Scale Post-Seismic Assessment. Proceedings of the 6th International Symposium on Reliability Engineering and Risk Management. 2018; ():1.
Chicago/Turabian StyleYves Reuland; Lorenzo Diana; Pierino Lestuzzi; Ian F.C. Smith. 2018. "Structural Resilience through Model-Based Data Interpretation: From Building to City-Scale Post-Seismic Assessment." Proceedings of the 6th International Symposium on Reliability Engineering and Risk Management , no. : 1.
Lorenzo Diana; Yves Reuland; Andrea Manno; Pierino Lestuzzi; Stefano Podestà. Seismic Displacement-Demand and Urban Damage Distribution: The Impact of Different Methods on Vulnerability Assessment. Proceedings of the 6th International Symposium on Reliability Engineering and Risk Management 2018, 1 .
AMA StyleLorenzo Diana, Yves Reuland, Andrea Manno, Pierino Lestuzzi, Stefano Podestà. Seismic Displacement-Demand and Urban Damage Distribution: The Impact of Different Methods on Vulnerability Assessment. Proceedings of the 6th International Symposium on Reliability Engineering and Risk Management. 2018; ():1.
Chicago/Turabian StyleLorenzo Diana; Yves Reuland; Andrea Manno; Pierino Lestuzzi; Stefano Podestà. 2018. "Seismic Displacement-Demand and Urban Damage Distribution: The Impact of Different Methods on Vulnerability Assessment." Proceedings of the 6th International Symposium on Reliability Engineering and Risk Management , no. : 1.
All’interno delle attività della ricerca ‘Abitare Tor Bella Monaca’ il gruppo di lavoro ‘Patrimonio Edilizio’ si è posto come obiettivo quello di\ud investigare le conseguenze dirette che l’approccio alla città pubblica della grande dimensione degli anni ’70 e ’80 a Roma ha avuto\ud sulle caratteristiche tipologiche e costruttive dell’edificato. Si è cercato di sottolineare quali siano le principali specifiche di una stagione tanto importante quanto massiccia e che ha contribuito a stravolgere il canonico modello di abitare pubblico e a infrastrutturare la periferia romana. L’attenzione è rivolta a come la ripetitività tipologica e costruttiva dell’industria delle costruzioni si sia concretizzata nel dettaglio delle realizzazioni alla scala edilizia. Attraverso un’analisi tipologico-ambientale e tecnologico costruttiva di due comparti specifici di tbm, M4 e R5, si è cercato di evidenziare le principali criticità e proponendo scenari di possibile rigenerazione
Lorenzo Diana; Marco Gissara; Edoardo Currà; Carlo Cecere. Tor Bella Monaca e la grande dimensione: scenari di manutenzione e rigenerazione ERP. TERRITORIO 2016, 53 -62.
AMA StyleLorenzo Diana, Marco Gissara, Edoardo Currà, Carlo Cecere. Tor Bella Monaca e la grande dimensione: scenari di manutenzione e rigenerazione ERP. TERRITORIO. 2016; (78):53-62.
Chicago/Turabian StyleLorenzo Diana; Marco Gissara; Edoardo Currà; Carlo Cecere. 2016. "Tor Bella Monaca e la grande dimensione: scenari di manutenzione e rigenerazione ERP." TERRITORIO , no. 78: 53-62.