GEO-Instruments monitors building settlement, ground settlement, and ground improvement. Settlement monitoring provides early detection of problems, guides corrective actions, and helps mitigate risk of property damage, project delays, and litigation.
Monitoring Building Settlement
Settlement in existing buildings is typically the result of changes in the foundation soil below the building. These changes can be induced by excavation, dewatering, or tunneling activities at adjacent sites.
Commonly deployed instruments and monitored parameters:
Crackmeters to monitor existing cracks that may worsen if more settlement occurs. Structural joints can be monitored by jointmeters
Hydrostatic Level Cells installed on interior or exterior walls to monitor differential settlements directly.
Tiltmeters installed on structural elements, walls, or floors to monitor rotation and deformations.
AMTS systems to monitor vertical and horizontal displacement of walls and floors.
Monitoring Ground Settlement
Commonly deployed instruments and monitored parameters for ground settlement:
Borehole Extensometers installed to monitor for subsurface settlements caused by tunneling or microtunneling.
Utility Monitoring Points installed to monitor for settlement of subsurface utility vaults and pipes.
Shape Arrays installed horizontally above the path of a tunnel boring machine to monitor settlement or heave below the surface.
Piezometers installed outside excavation perimeters to monitor changes to the water table.
AMTS and road prisms, installed above ground, to monitor road and sidewalk surfaces for deformation due to settlement.
Ground improvement techniques, such as surcharging compressible soils, also induce settlement. However, in this case, settlement is expected and measurements are used to evaluate the progress of the treatment.
Settlement Plates provide settlement data corresponding to the surcharge load placed on the compressible soil. Measurements can be automated with an AMTS system and prisms attached to settlement plate risers.
Shape Arrays installed horizontally have been used to monitor ground improvements for highways and railways embankments.
GeoCloud Automation operates 24/7 to deliver measurements from the project work site to secure project web sites. GeoCloud automation features wireless data acquisition, web-based data management, and website access to data.
Wireless data acquisition systems forward measurements to GeoCloud servers for processing. Dedicated GeoCloud websites provide access to alerts, graphs, and reports.