Abstract

Abstract Light wood frame (LWF) is a construction system considered innovative in Latin American countries, which has been used as a strategy to mitigate housing deficits. Since this construction system is new in these countries, a rigorous assessment of their manufacturing, construction and use is essential. Thus, this research aims to develop a method to evaluate the performance of LWF buildings in Brazil to help builders optimise the construction system in the country. The study made use of the literature to identify valuable criteria for a building performance evaluation using qualitative tools, such as questionnaires and the Delphi technique, to select specific criteria for the LWF system. Finally, statistic tools, criteria groups and weights were generated. As a result, the study established a framework with 5 dimensions, 19 criteria and 41 sub-criteria, thus understanding which the most important criteria are to be evaluated during the LWF building performance evaluation. Finally, the criteria with the highest scores refer to structural durability, maintenance, sealing and control of thermal, acoustic, visual and air quality comfort.

Highlights

  • The performance evaluation of buildings is highly important in the effort to improve social housing (BONNATO; MIRON; FORMOSO, 2011)

  • The second stage of the research aimed to validate the criteria found in the first step, identifying which of them were applicable in a performance evaluation of light wood frame buildings

  • (c) environmental Certifications regarding building performance criteria: Building Research Establishment Environmental Assessment Method (BREEAM), Leadership in Energy and Environmental Design (LEED), VERDE, Comprehensive Assessment System for Built Environment Efficiency (CASBEE), Green Start, International Initiative for a Sustainable Built Environment, Green Mark, National Australian Built Environment Rating System (NABERS), Green Globes, International Well Building Institute (Well), and the Brazilian "Selo Azul" (Blue Seal) and "Aquas"; and (d) documents that guide the construction system in Brazil: SINAT No 005 and DATec No 020-C (MINISTÉRIO DAS CIDADES, 2017a, 2017b), which have been developed based on other international documents

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Summary

Introduction

The performance evaluation of buildings is highly important in the effort to improve social housing (BONNATO; MIRON; FORMOSO, 2011). Construction companies that use LWF are attempting to fill this market niche. They target appropriate solutions that meet the requirements set by current regulations but must be cost-effective to remain within the limited budget. Considering that LWF is a new construction system in Brazil, a rigorous evaluation of its manufacturing, construction and use is essential. It is important to emphasise that any foreign technology incorporated in the country must be analysed with caution, especially when the construction system does not have a specific standard, such as LWF in Brazil

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