Gianmarco Paglierani
Sound and light in school environments : development of a preliminary parametric design approach.
Rel. Arianna Astolfi, Anna Pellegrino, Michela Turrin, Giuseppina Emma Puglisi, Louena Shtrepi, Luigi Giovannini. Politecnico di Torino, Corso di laurea magistrale in Architettura Costruzione Città, 2017
Abstract
The proposal is to consider a model of an existing classroom of a primary school in Turin, Scuola Elementare Leonardo Fontana (Via Michele Buniva, 19, 10124 Torino). It is part of an old school building of the eighteenth century, characterised by high vaulted ceilings and big volumes, with reflective surfaces at the boundaries. Classroom acoustic measurements have been performed in this classroom by the staff of the Department of Energy of the Politecnico di Torino and used to administer speech intelligibility tests in auralized environment. Using the geometry of the room and the optimal reverberation time obtained according to the DIN standard as inputs for the optimizing algorithm will be useful to obtain the best solution that guarantee the highest standards in terms of Reverberation Time (RT), Definition (D50), Signal to Noise Ratio (SNR) and that takes into account the cost of acoustic treatment.
This will be achieved by varying the ceiling and walls sound absorption and scattering values, location and extension
Relatori
Tipo di pubblicazione
Soggetti
Corso di laurea
Classe di laurea
Capitoli
Preface
Acknowledgments
Abstarct
Contents
1 Introduction
1.1 Research objectives
1.2 Structure of the thesis
1.3 Case study
2 Acoustic
2.2 Parameters target
2.2.1 Reverberation Time
2.2.2 Clarity
2.1.3 Definition
2.2.4 Early Decay Time
2.2.5 Signal-To-Noise Ratio
2.2.6 Speech Transmission Index
2.2.7 Equivalent Noise Level
2.3 The effects of noise on learning
2.3.1 Consequences of a high vocal effort
2.4 Acoustics requirements
2.5 Design solutions to control noise
2.5.1 Control of external noise levels
2.5.2 Control of internal noise levels
2.5.3 Acoustics bridges and installations
2.6 Design solutions to control reverberation
2.6.1 Solutions and materials for sound absorption
2.7 Classroom B current situation
2.7.1 Acoustics simulations process
2.7.2 Digital model of the real classroom B
2.7.3 Surfaces' properties and analysis settings
2.7.4 Model calibration
2.8 Acoustic design
2.8.1 Parametric model and analysis specifications
2.8.2 Preliminary acoustic design study
2.8.2.1 The diffusing panel on the lower front wall
2.8.2.2 The last raw of seats
2.8.2.3 Other consfigurations with particular ceilings
2.9 Acoustic multi-objective optimization
2.9.1 Simulation setup
2.9.2 Types of ceilings
2.1 0 Multi-objective optimization results
2.10.1 Ceiling type n° 1 optimization
2.10.1.1 Best acoustic treatment obtained
2.10.2 Ceiling type n° 2 optimization
2.10.2.1 Best acoustic treatment obtained
2.10.3 Final multi-objective optimization
2.10.3.1 Best acoustic treatment obtained
2.11 Conclusion
3 Lighting
3.1 Lighting Design
3.1.1 Task/Activity Lighting
3.1.2 Lighting for Visual Amenity
3.1.3 Lighting and Architectural Integration
3.1.4 Lighting and Energy Efficiency
3.1.5 Lighting Maintenance
3.1.6 Lighting Costs
3.2 Lighting Design Guidance
3.2.1 UNI EN 12464
3.2.2 UNI 10840
3.3 Design Parameters of Natural Lighting
3.3.1 Daylight Factor (FLDm)
3.3.2 Climate-based daylight modelling (CBDM)
3.4 Case studies current situation
3.4.1 Classroom B
3.4.1.1 3D Model
3.4.1.2 Traditional parameters analysis - DF.
3.4.1.3 Dynamic parameters analysis - CBDM
3.4.1.4 Dynamic parameters analysis - Glare
3.4.2 Classroom Y.
3.4.2.1 3D Model
3.4.2.2 Traditional parameters analysis - DF.
3.4.2.3 Dynamic parameters analysis - CBDM
3.4.2.4 Dynamic parameters analysis - Glare
3.5 Case studies comparison
3.6 Lighting design
3.6.1 Classroom Y study model
3.6.1.1 Test n° 1
3.6.1.2 Test n° 2
3.6.1.3 Test n° 3
3.7 Conclusion
Appendix A
Appendix B
Appendix C
Bibliography
Bibliografia
BIBLIOGRAPHY
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