Monitoring on Ground/Building Settlement and Subsurface Movement Building/Ground Settlement Marker Building settlement markers are installed on the columns of existing structures or buildings to determine any inherence settlement or heave. The type of settlement markers to be used varies with the site conditions such as surveyor’s nail for concrete slab and for the soil and 1300mm reinforcement bar installed in the ground.

Inclinometer in Wall / Soil Portable vertical inclinometer probe used to obtain segment inclination through vertically installed inclinometer casing which make gradual displacement with subsoil movement. It obtains data by using inclinometer probe which connected to inclinometer data logger through a control cable. Any horizontal ground displacement displaces the casing and causes change from initial inclination angle. Inclinometer probe has a built-in bi-axis accelerometer able to read up to 30 degree or more in horizontal angle, one axis is parallel with the wheel and another one is right-angled. It consists of torque-balanced pendulum which has no effect from impact or vibration and thus, maintaining high resolution and precise data.

During measurement, the pair of grooves inside the inclinometer casing which faces the excavation or potential displacement face will be used as primary measurement direction. The probe is lowered down to the toe of the casing by aligning sprung wheels on the probe to the primary grooves pairs found inside the casing. Typical measurement interval, which represents each segment length, is 0.5m. Applications for inclinometers include: • Monitoring horizontal slopes movement and landslides • Monitoring diaphragm walls and sheet piles horizontal displacement • Monitoring the effects of tunnelling operations to adjacent subsoil movement Monitoring on Building Tilting and Construction Vibration Tiltmeter Tiltmeter is use to monitor changes in the inclination of a structure. Tiltmeter data can provide an accurate history of inclination of a structure and early warning of potential structural damage.

The tiltmeter system includes a tilt plate, the portable tiltmeter, and a readout unit. Tilt plates are available in ceramic or bronze. Eye Test For Driver`s License In Ohio. Both types are dimensionally stable and weather resistant. Tilt plates are mounted on the structure in specified locations.