Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. XII
Written by Marta Cristina ZAHARIA, Gabriela VOLOACA
A special importance in designing the urban assemblies in cities, especially the configuration of the transversal profiles of the traffic roads, from the point of view of the acoustic and vibration protection for people, has the judicious design of the green spaces that are placed between the traffic roads and building front facades construction elements. Green spaces bring with a good contribution in the process of reducing urban noise, because of acoustic absorption characteristics they have. The relationship between the profile / size of urban road arteries in correlation with the size of adjacent green spaces and/or the distance from the running area to buildings can be evaluated from several points of view, including the effect of an earthquake. There were made research, in projects PN 23 35 01 01 and PN 23 35 06 01, by calculation studies regarding the values of the equivalent noise level, Lext (f), from traffic, - which were performed for a street-study profile, considered as a standard, then for other cases of study-road profiles. It was shown that for a traffic street of technical class 1 (with 8 lanes of traffic), bordered by two fronts of buildings of at least 8 floors high, having a complex composition of traffic, the two cases: without and with green area made by trees, shrubs and grass, indicates that values of transmission noise may decrease between 1 to 5 dB, depending on the winter and summer seasons.
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