BIM cost estimation guidelines for Brazilian public sector infrastructure

The cost estimation of public sector projects in Brazil must observe the prevailing legislative framework to reduce the likelihood of under-and-over pricing of construction works and potential corruption. Therefore, initial estimates for projects must be prepared using the National System of Costs a...

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Main Authors:	Felisberto, Alexandre David, Marchiori, Fernanda Fernandes, Love, Peter, Signor, Regis
格式:	Online
語言:	eng
出版:	Universidade Estadual de Campinas 2021
在線閱讀:	https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/e021004
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spelling	oai:ojs.periodicos.sbu.unicamp.br:article-86597662021-01-19T13:12:37Z BIM cost estimation guidelines for Brazilian public sector infrastructure Diretrizes para orçamentação de obras públicas brasileiras utilizando BIM Felisberto, Alexandre David Marchiori, Fernanda Fernandes Love, Peter Signor, Regis Modelagem da Informação da Construção BIM Estimativa de custo Obras públicas Brasil Building Information Modelling BIM Cost estimation Public construction Brazil The cost estimation of public sector projects in Brazil must observe the prevailing legislative framework to reduce the likelihood of under-and-over pricing of construction works and potential corruption. Therefore, initial estimates for projects must be prepared using the National System of Costs and Civil Construction Indices (SINAPI). This is a labor-intensive process, and the result estimates produced may be inaccurate. Therefore, it becomes difficult to determine if the under-or-over pricing of works has arisen during the tendering process. The problem is approached with new guidelines for improving the accuracy of estimates that utilizes SINAPI methodology with Building Information Modelling cost estimation. The research method used was Design Science Research (DSR) developing: problem diagnosis, solution proposition, implementation, and evaluation of contributions. The proposed guidelines were tested in two projects: a multi-family residential building and a Reference Center for Social Assistance (CRAS) using a BIM authoring platform. It has been demonstrated that text parameters can be used to identify material specifications, the geometry of elements, and specify substrates, improving the process to generate an estimate following ‘SINAPI factors’ tree’ elemental costs. The guidelines comply with prevailing Brazilian legislation and can improve the process and accuracy of the pre-tender estimate. A estimativa de custos de obras públicas no Brasil deve estar de acordo com a legislação vigente para reduzir a probabilidade de subfaturamento ou superfaturamento e potencial corrupção. O orçamento inicial dos projetos deve ser preparado usando o Sistema Nacional de Custos e Índices da Construção Civil (SINAPI). Este processo consome muito tempo e, ainda, as estimativas podem ser imprecisas, tornando-se difícil determinar se o preço das obras está abaixo ou acima do valor real durante o processo de licitação. Para resolver esse problema, são apresentadas diretrizes para melhorar a precisão das estimativas, contemplando o SINAPI e utilizando modelagem da informação da construção (do inglês, BIM). A estrutura proposta foi testada em dois projetos: um edifício residencial multifamiliar e um Centro de Referência de Assistência Social (CRAS) usando uma plataforma de autoria BIM. Foi demonstrado que os parâmetros de texto podem ser usados para identificar especificações de materiais, geometria dos elementos e especificar substratos, o que pode melhorar o processo para gerar uma estimativa de acordo com os custos dos elementos da “árvore fatores do SINAPI". As diretrizes propostas estão em conformidade com a legislação brasileira e são capazes de melhorar o processo e a precisão das estimativas pré-licitação. Universidade Estadual de Campinas 2021-01-25 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Text Texto application/pdf https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/e021004 10.20396/parc.v12i00.8659766 PARC Pesquisa em Arquitetura e Construção; Vol. 12 (2021): Continous publication; e021004 PARC Pesquisa em Arquitetura e Construção; Vol. 12 (2021): Publicação contínua; e021004 PARC Pesquisa em Arquitetura e Construção; v. 12 (2021): Publicação contínua; e021004 1980-6809 eng https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/e021004/25853 Brazil; Contemporary Brasil; Contemporâneo Copyright (c) 2021 PARC Pesquisa em Arquitetura e Construção https://creativecommons.org/licenses/by/4.0
institution	Universidade Estadual de Campinas
collection	OJS
language	eng
format	Online
author	Felisberto, Alexandre David Marchiori, Fernanda Fernandes Love, Peter Signor, Regis
spellingShingle	Felisberto, Alexandre David Marchiori, Fernanda Fernandes Love, Peter Signor, Regis BIM cost estimation guidelines for Brazilian public sector infrastructure
author_facet	Felisberto, Alexandre David Marchiori, Fernanda Fernandes Love, Peter Signor, Regis
author_sort	Felisberto, Alexandre David
title	BIM cost estimation guidelines for Brazilian public sector infrastructure
title_short	BIM cost estimation guidelines for Brazilian public sector infrastructure
title_full	BIM cost estimation guidelines for Brazilian public sector infrastructure
title_fullStr	BIM cost estimation guidelines for Brazilian public sector infrastructure
title_full_unstemmed	BIM cost estimation guidelines for Brazilian public sector infrastructure
title_sort	bim cost estimation guidelines for brazilian public sector infrastructure
description	The cost estimation of public sector projects in Brazil must observe the prevailing legislative framework to reduce the likelihood of under-and-over pricing of construction works and potential corruption. Therefore, initial estimates for projects must be prepared using the National System of Costs and Civil Construction Indices (SINAPI). This is a labor-intensive process, and the result estimates produced may be inaccurate. Therefore, it becomes difficult to determine if the under-or-over pricing of works has arisen during the tendering process. The problem is approached with new guidelines for improving the accuracy of estimates that utilizes SINAPI methodology with Building Information Modelling cost estimation. The research method used was Design Science Research (DSR) developing: problem diagnosis, solution proposition, implementation, and evaluation of contributions. The proposed guidelines were tested in two projects: a multi-family residential building and a Reference Center for Social Assistance (CRAS) using a BIM authoring platform. It has been demonstrated that text parameters can be used to identify material specifications, the geometry of elements, and specify substrates, improving the process to generate an estimate following ‘SINAPI factors’ tree’ elemental costs. The guidelines comply with prevailing Brazilian legislation and can improve the process and accuracy of the pre-tender estimate.
publisher	Universidade Estadual de Campinas
publishDate	2021
url	https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/e021004
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BIM cost estimation guidelines for Brazilian public sector infrastructure

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