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Formwork for concrete: subsidies to optimizing the design according NBR 7190/97 (Brazilian Code - Design of Timber Structures)

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Author(s):
George Magalhães Maranhão
Total Authors: 1
Document type: Master's Dissertation
Press: São Carlos.
Institution: Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD)
Defense date:
Examining board members:
Francisco Antonio Rocco Lahr; José Samuel Giongo; José Antonio Matthiesen
Advisor: Francisco Antonio Rocco Lahr
Abstract

The high level of knowledge in the production of new materials and in the steps of structural design is not present on the construction techniques of multistorey buildings. On the other hand, to global economy it becomes indispensable to introduce rationalization concepts in civil construction, especially in formwork. This introduction is only possible with the action of an expert, who is still rare in Brazilian Civil Engineering. In this context, this work aims the presentation of procedures to reach a reduction on the final cost of multi-storey buildings, when architectural and structural design are well outlined, with emphasis to constructive details. Furthermore, the benefits of a proper definition of the \"Formwork Design\" are presented, due to its fundamental role in the graphical elements of a project. The principles of formwork design are presented according to new Brazilian Code (Design of Timber Structures -1997), based on limit states method. Tests on the lateral faces of column formwork originated a proposal to estimate lateral pressures applied by the concrete (according to Mohr-Coulomb Theory), which is necessary to detail formwork elements. Finally, the premises to design the formwork of a multistorey building are presented. (AU)