http://memoria.ifrn.edu.br/handle/1044/2844 Sat, 01 Aug 2026 06:57:15 GMT 2026-08-01T06:57:15Z http://memoria.ifrn.edu.br/handle/1044/3258 Planejamento de obras com foco na prevenção de acidentes: aplicação da ferramenta APR (Análise Preliminar de Riscos) associada com a NR-18 The construction industry plays a significant role in Brazil's economic and social development, contributing to job creation, infrastructure expansion, and urban growth. However, the sector continues to rank among those with the highest incidence of occupational accidents, particularly due to the execution of activities involving a high level of risk. In this context, the implementation of preventive tools is essential for reducing workplace accidents and promoting safer working environments. Preliminary Risk Analysis constitutes an important methodology for the identification, assessment, and control of occupational hazards, enabling the anticipation of potentially dangerous situations. When combined with the guidelines established by Regulatory Standard nº 18, which defines the working conditions and work environment requirements for the construction industry, it represents a strategic instrument for ensuring safer construction practices. This study aims to analyze the application of the PRA tool in construction project planning, examining its contribution to accident prevention and compliance with the requirements of NR-18. The adopted methodology consists of bibliographic and documentary research, as well as a case study focused on the preventive measures required for the execution of the Foundation and Structural phases of a building belonging to The Church of Jesus Christ of Latter-day Saints. Risk matrices were developed for the project's critical activities, identifying their respective risk levels, hazards, potential consequences, and preventive measures. The results demonstrate that the systematic application of these tools enables the prior identification of unsafe conditions, reduces the likelihood of occupational accidents, and supports decision-making throughout the project's execution planning. Thu, 09 Jul 2026 00:00:00 GMT http://memoria.ifrn.edu.br/handle/1044/3258 2026-07-09T00:00:00Z http://memoria.ifrn.edu.br/handle/1044/3254 Identificação de manifestações patológicas em residências financiadas pelo Programa Minha Casa Minha Vida na cidade de Extremoz do Estado do Rio Grande do Norte: estudo de caso The present study aims to identify and analyze pathological manifestations in three residential buildings financed by the "Minha Casa Minha Vida" Program (PMCMV) in the municipality of Extremoz, Rio Grande do Norte, with over ten years of occupancy. The methodology consisted of systematic visual inspections supported by checklists, photographic records, and structured interviews with residents to survey the buildings' history. The results revealed the recurrent presence of pathologies in sealing systems (cracks and fissures), coating and painting (stains, wear, and bubbles), as well as critical moisture issues (infiltrations and mold stains) and occasional anomalies in electrical installations. It was found that all analyzed units presented defects within the first five years of use, suggesting the occurrence of construction defects originating during the execution phase. The main identified causes refer to the absence or deficiency of waterproofing, technical execution failures, the use of low-quality materials, the absence of secondary structural elements (lintels and sill beams) in openings, and the lack of preventive maintenance by users. The pattern of occurrence was similar across the properties, with moisture predominantly affecting bedrooms and bathrooms. Despite the pathologies found, the residents' perception regarding the quality of the housing varied between fair and good. It is concluded that there is a pressing need to intensify quality control in the program's construction works and ensure strict compliance with current technical standards, aiming to guarantee the durability and habitability of social interest housing units. Wed, 08 Jul 2026 00:00:00 GMT http://memoria.ifrn.edu.br/handle/1044/3254 2026-07-08T00:00:00Z http://memoria.ifrn.edu.br/handle/1044/3208 Aplicação do método de Sulzberger no cálculo do dimensionamento geotécnico de fundações para postes duplo “T” de concreto armado The present study analyzes the applicability of the Sulzberger Method in the geotechnical design of foundations for reinforced concrete poles used in distribution networks and transmission lines. Two embedment conditions are evaluated: simple embedment filled with compacted soil-cement and embedment using a drilled shaft with a concrete base, considering both sandy and clayey soils. This method consists of analyzing the structural element primarily under lateral loads and is developed to present in detail the calculation procedures proposed by the model’s author. To demonstrate the practical and effective applicability of the method, design examples were carried out considering different types of poles, with varying load conditions and lengths. The results indicate that the studied methodology represents a viable alternative for design in situations where lateral loading—predominantly horizontal forces—is governing, as in the case of poles, contributing to increased structural safety and serving as a basis for further studies and related research. Wed, 28 Jan 2026 00:00:00 GMT http://memoria.ifrn.edu.br/handle/1044/3208 2026-01-28T00:00:00Z http://memoria.ifrn.edu.br/handle/1044/3170 Análise dos editais de licitação para contratação de restauração de rodovias estaduais do Estado do Rio Grande do Norte Mon, 11 Aug 2025 00:00:00 GMT http://memoria.ifrn.edu.br/handle/1044/3170 2025-08-11T00:00:00Z