It is a well-discussed topic that Construction and Demolition Waste (CDW) can be recycled and used as aggregate in the construction sector. Generally, Brazilian construction techniques are based on hollow blocks or bricks and mortars as coating systems. This paper describes the sound insulation of a masonry wall built with hollow concrete blocks and CDW as aggregates. The measurements were performed according to the reverberant chamber method. Keeping sustainability in mind instead of applying cement mortar as coating system, Oriented Strand Boards (OSB) and Wood-Wool Cement Boards (WWCB) were used and also tested as acoustical linings. The panels were directly attached on the wall with nails in the receiving room. All types of panels increased the weighted sound reduction index ([Formula: see text]). Wood-based composites can also improve the air quality because of their hygroscopic properties. In summary, sustainable wall systems were characterized according to their sound insulation properties, presented as possible substitutes for traditional masonry walls.
Resumo Câmara Bioclimática de Baixo Custo (CBBC) é um laboratório de estudos comparativos de conforto ambiental e desempenho de edificações. Neste artigo, apresenta-se um diagnóstico geral das condições de conforto térmico e acústico proporcionadas pela configuração inicial da CBBC, a partir de alguns resultados da avaliação pós-ocupação (APO) - a qual também englobava aspectos de conforto lumínico, ergonômico e funcional. Inicialmente, faz-se uma breve contextualização sobre APO. No delineamento experimental, apresentam-se a estrutura e as funcionalidades da CBBC, detalha-se o monitoramento de variáveis ambientais, o protocolo de operação da CBBC e a metodologia adotada na APO. Na sequência, constam os resultados da APO realizada por 136 voluntários em agosto de 2018, sob condições de ventilação forçada, porém sem interferência de climatização artificial. A maioria dos ocupantes declarou sentir-se confortável com a temperatura do ar interna (84,6%). Em contrapartida, mais de um quinto dos ocupantes declararam estar insatisfeitos (19,1%) ou muito insatisfeitos (2,2%) com o nível de ruído na CBBC.
Palavras-chave: Processos de negócio; Mapeamento de processos; Modelo básico de processos de negócio; Subsetor de edificações.
Abstract:The work aims to present the study of the business processes of small building companies. The study led to the development of a basic model of business processes. For this, we applied the multiple case study method as main technique to identify the common processes among the companies studied. The study included five building companies of the city of Curitiba, Paraná, Brazil. Data were collected through semi-structured interviews, document analysis and direct observations in loco. Based on the information obtained, the business process modeling was developed using BPMN notation (Business Process Modeling Notation). Thus, the study allowed the development of a basic model that presents the best practices based on the PCF model (Process Classification Framework), in view of, adequate and compatible with the reality of the organizations that work in the subsector of buildings. The framework obtains a unique view of the processes, presenting the main activities of each business process, with the intention of transmitting a single language within the company.
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