Year: 1993
Type: article
Abstract: Front Cover: (a) Tension cracks formed in the ground surface extending through a home; the foundation has settled at the house corner closer to the center of sag.(b) Compression ridges formed in a road as the result of ground movement (compression) associated with coal mine subsidence.(c) The brick-sided house in the tension zone shows downward bending (compare roof lines).The left side of the home is closest to the sag center and has dropped down.Inset: ground has pulled away from the porch toward the sag center (left).(d) Settlement of the main beam caused by construction problems.(e) This basement damage was unrelated to mine subsidence.It was caused from decades of seasonal wetting and drying of soils, which built up pressure against the basement foundation walls.With each cycle, dryness allows fine grains of soil to fall into the gap between the soil and the foundation wall.When moisture returns, the soil expands, increasing pressure until the wall fails and is pushed inward.
Authors: Robert A. Bauer, Rod R. Blagojevich, Robert A. Bauer
Institution: Illinois State Geological Survey
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
Funder: Strong
OpenAlex ID: W47018076