Estudio comparativo para áreas mínimas en contacto con el suelo de zapatas aisladas rectangulares y circulares trabajando parcialmente bajo compresión.

This paper presents a comparative study for minimum areas in contact with the ground of RIF (rectangular isolated footings) y CIF (circular isolated footings) that work totally CM (Current model) or partially NM (New model) under compression. Methodology is described using the equations developed by the same author for RIF y CIF. Main findings: RIF under uniaxial bending have less area than CIF in the CM and in the NM; NM presents less area than CM for RIF y CIF under biaxial bending in all cases; NM for CIF shows less area than RIF, when the moments are equals and the relation of the axial load divided by the moment is 0.75 or greater, when the smallest moment divided by the largest moment is between 0.50 and 0.75, and the axial load is greater than the largest moment. Therefore, it is recommended to carry out a previous study to choose the type of footing. [ABSTRACT FROM AUTHOR]