A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Investigation of building subsidence using ground radar and an enthusiastic householder
Ground Penetrating Radar systems can be a useful means to conduct non-intrusive site investigations. Systems and most importantly, the level of operator expertise are improving allowing a wider application of the technique. We look at a particular case study involving detection of the causes for severe subsidence under a dwelling near Leeds. Subsidence cracks of around 5 to10 cm were found to be present in parts of one half of a semi detached property built in the 1920's on an isolated hilltop. Mining history records show the presence of both ancient and 19th Century pillar and stall workings in the area. Ground penetrating radar and resisitivity techniques were used to build up a number of geophysical profiles around the property to locate any mining voids and to determine their proximity to the house. Despite the limited nature of these investigations the location and entry into mine workings based on the geophysical information has proved highly successful. Although the mine levels stop just short of the property they are sufficiently close and have collapsed to a sufficient degree to account for much of the observed subsidence. The approach of a non-intrusive investigation followed by targeted intrusive investigations was justified in this case and this same approach can be applied to many situations prior to treatment or initiation of construction works.
Investigation of building subsidence using ground radar and an enthusiastic householder
Ground Penetrating Radar systems can be a useful means to conduct non-intrusive site investigations. Systems and most importantly, the level of operator expertise are improving allowing a wider application of the technique. We look at a particular case study involving detection of the causes for severe subsidence under a dwelling near Leeds. Subsidence cracks of around 5 to10 cm were found to be present in parts of one half of a semi detached property built in the 1920's on an isolated hilltop. Mining history records show the presence of both ancient and 19th Century pillar and stall workings in the area. Ground penetrating radar and resisitivity techniques were used to build up a number of geophysical profiles around the property to locate any mining voids and to determine their proximity to the house. Despite the limited nature of these investigations the location and entry into mine workings based on the geophysical information has proved highly successful. Although the mine levels stop just short of the property they are sufficiently close and have collapsed to a sufficient degree to account for much of the observed subsidence. The approach of a non-intrusive investigation followed by targeted intrusive investigations was justified in this case and this same approach can be applied to many situations prior to treatment or initiation of construction works.
Investigation of building subsidence using ground radar and an enthusiastic householder
Untersuchung der Gebäudesetzung mittels Bodenradar und ein begeisterter Haushälter
Openshaw, S. (author) / Hakes, J. (author)
2001
6 Seiten, 6 Bilder, 2 Quellen
(Nicht paginiert).
Conference paper
English
| British Library Online Contents | 2014
| British Library Online Contents | 2009
| Wiley | 2009
| TIBKAT | 1989