Immediate settlement of footing using interpreted seismic refraction geoelastic data: a case study of Eket county, Nigeria

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Abstract

Immediate settlement of footing was assessed at five different locations in Eket using known parameters (measured and calculated) that were obtained from the interpretation of 12 channel digital type signal enhancement seismograph (Terraloc Mark Six). Results obtained show that immediate settlement of footing is approximately 0.025 m in all the locations. This was determined at width B 20 ft (6.096 m). The boundary condition (limit) for bearing pressure in the area by this study falls within the range of 1694 psf (or 81,131 Pa) 29934psf (or 143,380 Pa). The class of materials in the area (first layer) falls under row five and row six, column one of International Residential Code, 2006. The study reveals that the area has a threshold subgrade coefficient of 29,298 Nm while the descent of footing under load per metre is 159.7. These parameters further characterise the foundation under load in the study area.

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NRIAG Journal of Astronomy and Geophysics
Volume 9, Issue 1
January 2020
Pages 433-448

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