Analysis of the installation duration of large-scale modular building

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The present work aims to investigate the duration of the installation of large-scale prefabricated modules, with the goal of developing a methodology to determine the installation duration of buildings made from these modules, taking into account the impact of organizational and technological decisions. To identify the distribution of time spent on technological operations during the construction of buildings from large modules and to analyze inefficient time and minimize elements of production risk, a time study was conducted. The average time required to install a storey-section of a building from large-size modules, as determined by chronometry, was 11.8 hours. The paper presents the results of classifying operations during the installation of a storey-section of a building from large-size modules into significant and insignificant works and losses. Total time losses amounted to about 6% of the total time required to install a large-sized module. Time losses during the installation of storey section modules are also classified into groups based on the results of field observations. The greatest losses were associated with the selection and design of organizational and technological solutions for the installation of the building. Reducing losses and minimizing insignificant tasks can be achieved through rational selection of organizational and technological solutions. A promising and important direction for future work is the development of a mathematical model that describes the impact of organizational and technological solutions on the installation duration of buildings made from large-scale prefabricated modules.

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Sobre autores

D. Mochalin

National Research Moscow State University of Civil Engineering; Kombinat Innovationnich Technologiy – MonArch

Autor responsável pela correspondência
Email: dm.mochalin@mail.ru

Postgraduate Student of the Department of Technologies and Organization of Construction Production, Director

Rússia, 26, Yaroslavskoe Highway, Moscow, 129337; 2/10, apt.48A, Vnukovo Municipal District, Moscow, 108809

Bibliografia

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2. Fig. 1. Multisection multi-story residential building made of large modular units

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3. Fig. 2. Histogram with grouping of timed works: 1 – preparatory works; 2 – lifting of load-lifting devices to the installation horizon; 3 – slinging of temporary roof sections; 4 – lifting and moving temporary roof sections; 5 – unslinging temporary roof sections; 6 – slinging the module; 7 – lifting and moving the module; 8 – slinging and installation of the module in the design position; 9 – unslinging of the module; 10 – lowering of hooks to the site; 11 – completion of installation units; 12 – handover of completed work to the quality control service) by type (significant, insignificant work and losses

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4. Fig. 3. Histogram in % accumulation of the total time of timed work: 1 – preparatory works; 2 – lifting of load-lifting devices to the installation horizon; 3 – slinging of temporary roof sections; 4 – lifting and moving temporary roof sections; 5 – unslinging temporary roof sections; 6 – slinging the module; 7 – lifting and moving the module; 8 – slinging and installation of the module in the design position; 9 – unslinging of the module; 10 – lowering of hooks to the site; 11 – completion of installation units; 12 – handover of completed work to the quality control service

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