Settlement plates are mainly installed on existing ground surface prior to the building of an embankment.The system consists of a base plate, reference rod (riser) that can be attached via threaded couplings or using a client’s specific design.The base plate is placed on the ground with a section of riser attached then the ground and riser elevation is established prior to proceeding with placement of fill.
What is an embankment settlement plate?
RST Embankment Settlement Plate Systems provide simple means of measuring settlement under an embankment. The plate is placed on the foundation material and riser pipes are added as the embankment is placed. Survey of the top of the riser pipe permits foundation settlement to be followed.
When should settlement plates be placed?
A.S. Balasubramaniam, in Ground Improvement Case Histories, 2015 Settlement plates or points are commonly installed where significant settlement is predicted (Dunnicliff, 1988) to record the magnitude and rate of settlement under a load. Therefore, they should be placed immediately after installing the vertical drains.
When to place the settlement plate of a vertical drain?
Therefore, they should be placed immediately after installing the vertical drains. In the simplest form, this instrument is a settlement plate consisting of a steel plate placed on the ground before construction of the embankment. Surface settlement points measure vertical displacement with depth, for example, along an embankment centerline.
How do you monitor settlement of a settlement?
Typically, a reference rod and protecting pipe are attached to the settlement-monitoring platform. Settlement is often evaluated periodically until the surcharge embankment is completed, then at a reduced frequency, measuring the elevation of the top of the reference rod.
What are settlement plates used for?
Settlement plates are used to monitor settlement induced by surcharges placed on compressible soils.
What is settlement marker?
The settlement marker is used to measure a localised settlement or heave of roads, slopes, embankments, utility pipes and cables.
What is settlement gauge?
The settlement gauge is a pressure transducer with vibrating wire or capacitive technology, mounted on a plate with a protective cover. Depending on the requirement, the settlement system can be installed with just a single gauge or with multiple gauges.
How do Settlement markers work?
Structure settlement marker is used to monitor the movement of the existing buildings/ structures which may be affected by the works. Featuring a spherical head and a plated body that minimize damage to the building, the wall-mounted marker is installed around the external facade of the building.
What is Rod settlement gauge?
Rod Settlement Gauge Rod Settlement Gauge/Settlement Plate is typically installed during initial phase of construction and designed to monitor the immediate vertical ground settlement as well as long term.
How does a Piezometer work?
Piezometer (Fig. 1.24) is used to measure underground water pressure. It converts water pressure to a frequency signal via a diaphragm and a tensioned steel wire. A change in pressure on the diaphragm causes a change in tension of the wire.
What is instrumentation and monitoring?
Instrumentation and monitoring technology are increasingly used to monitor structures, processes and infrastructure under construction and during the operational phase in order to verify design and planning and detect events in order to reduce risk.
What is a standpipe piezometer?
Standpipe Piezometers offer a simple and economic method for measuring water pressures in soil and rock. The Standpipe Piezometer (also known as a Casagrande Piezometer) is used to monitor piezometric water levels in vertical boreholes.
How do vibrating wire piezometers work?
The vibrating wire transducer inside the piezometer converts water pressure to a frequency signal via a diaphragm, a tensioned steel wire, and an electromagnetic coil. The transducer is constructed so that a change in water pressure on the diaphragm causes a change in the tension of the wire.
Overview
RST Embankment Settlement Plate Systems provide simple means of measuring settlement under an embankment. The plate is placed on the foundation material and riser pipes are added as the embankment is placed. Survey of the top of the riser pipe permits foundation settlement to be followed.
DATA SHEET
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