Estudo da pressão admissível de fundações diretas em solo residual de gnaisse através de provas de carga em placa
The research aimed at examining the suitability of plate loading tests in the determination of the allowable pressure of individual shallow foundations resting on grounds of practically instantaneous compressibility. Emphasis was given to the method - developed by Housel (32) and improved by Barata (5, 6, 7, 9) - that permits extrapolation of results from tests on small plates in the forecast of settlements to be expected in larger real foundations. The author had no chance to compare predictions based on plate test data with the behaviour of a real footing, founded on the same soil, but could, at least, collate the values of deformation moduli obtained from laboratory tests with those determined by means of Housel-Barata's method. An extension of the research led to the suggestion of a procedure to round a limitation of methods based on linear elasticity - Housel-Barata's among them -, permitting the design of foundations whose allowable settlement is beyond the linear portion of the pressure vs. settlement curve.
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