Dimensionamento e detalhamento de sapatas submetidas à flexão composta oblíqua

Abstract

Due to the great number of constructions that use footing as foundations, this work brings together a theory necessary to dimension and detail such elements, in order to help students and professionals of the area in understanding the subject. A series of equations are presented that can be easily implemented in spreadsheets, construction details and project details. It is discussed from the determination of the maximum tensions in the soil until the calculation of the flexural reinforcement of the base of the footing, for loads of centered compression, straight composite bending and oblique composite bending. The Real Project of a New York Residence Building, built by Manhattan Construtora, is used as a case study to compare with the theory discussed in this paper, where different scenarios are considered for the volume, which represents the geometry of the footing, and the armor transversal and longitudinal, according to criteria that vary from designer to designer. It is verified that the Real Project shoes are within the expected margins for the transverse and longitudinal reinforcement and for the volume.