ZEMCH 2015 - International Conference Proceedings | Page 348

Conclusions
This paper discusses the main results of a research study aimed at measuring the waste of materials in low-income housing designs and at proposing general solutions for reducing waste. The
material consumption and waste were analyzed during the development of the product design
to evaluate the impact of design decisions on material waste. The data collection allowed the
team to review design decisions that would result in material waste, considering mass production. The analysis of the material consumption and waste during the product design made possible to identify its causes and to suggest solutions to prevent them. Subsequently, a survey of the
waste due to the solutions suggested enabled the assessment of the decisions impact.
During development of product design, also the materials applied should be considered and
quantified to reducing the variety of the boards’ formats.
The material waste main cause was the need to cut-off the boards in panels with openings. The
need of a mismatch between the OSB and the finishing board aggravates the possibility of waste
and the increase of boards’ variety. The proposed solution ensures the dimensional compatibilization that reduces the waste of sheathing components.
The OSB boards waste is fully due to the cut-off in the panels with openings, and the volume of
waste difference identified in the survey correspond to the changes in the size of openings for the
proposed standardization of cementitious boards. The remaining waste of OSB boards is derived
from the technical recommendation that the end of the OSB board should not coincide with the
openings corners. Further studies needs to be undertaken in order to support other design alternatives for this situation.

Acknowledgements
The authors would like to thank Jorge Daniel de Melo Moura from the State University of Londrina
for supporting the development of this research.

Notes
1

WHITT, K.J. Materials management in the construction industry. Department of Civil Engineering. 1974. 235p.Thesis
- Ledds University.

2 Architect and urbanist, associate professor, with 29 years of experience; architect and urbanist, associate professor,
with 19 years of experience; civil engineer, associate professor, with 17 years of experience and 12 years of professional experience; architect and urbanist with 5 years of professional experience; architect and urbanist, with 2
years of professional experience.

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ZEMCH 2015 | International Conference | Bari - Lecce, Italy