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Tiltmeter Installation Guide

This document provides instructions for installing and using a tiltmeter to monitor structural movement. It describes two installation methods for securely mounting tilt plates - either by drilling holes and bonding the plates, or by using epoxy to adhere the plates to the surface. Once installed, the portable tiltmeter is placed on the plates and readings are taken and averaged to measure any changes in tilt over time, which can provide warning of potential damage to structures like dams from mining or construction activities.

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Suvashis Paul
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437 views2 pages

Tiltmeter Installation Guide

This document provides instructions for installing and using a tiltmeter to monitor structural movement. It describes two installation methods for securely mounting tilt plates - either by drilling holes and bonding the plates, or by using epoxy to adhere the plates to the surface. Once installed, the portable tiltmeter is placed on the plates and readings are taken and averaged to measure any changes in tilt over time, which can provide warning of potential damage to structures like dams from mining or construction activities.

Uploaded by

Suvashis Paul
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Method Statement for Installation Tiltmeter

Method Statement for Installation Tiltplate and Monitoring


(Guide Lines: Slope Indicator Manual)

Introduction:
Changes in tilt can occur when nearby construction activity affects the ground that
supports the structure. Portable tiltmeter is used to monitor the changes in the
inclination of a structure. Tiltmeter data can provide an accurate history of movement
of a structure and early warning of potential structure damage. The typical
application includes:
- Monitor rotation caused by mining, tunneling, soil compaction, or
excavation.
- Monitor rotation of concrete dams and retaining walls.
The Tiltmeter includes a number of tilt plates, the portable tiltmeter, and a readout
unit.

Operation:
The portable tiltmeter uses a force-balanced servo-accelerometer to measure
inclination. To obtain tilt readings, the operator connects the tiltmeter to the readout
unit and positions the tiltmeter on the tilt plate. With the (+) marking on the sensor
base plate aligned with peg 1. The operator then notes the displayed reading, rotates
the tiltmeter 1800, and obtains a second reading. Later, the two readings are
averaged to cancel sensor offset.

Changes in tilt are found by comparing the current reading to the initial reading. A
positive value indicates tilt in the direction of peg 1 (peg 1 down, peg 3 up). A
negative value indicates tilt in the direction of peg 3.

The metric tiltmeter and indicator deliver a resolution of 8 arc seconds or 0.004 mm
of movement over the 101 mm base of the tilt plate. The English tiltmeter and
indicator deliver a resolution of 10 arc seconds or 200 micro-inches of movement.

GIE Pte Ltd Page 1 of 2


Method Statement for Installation Tiltmeter

Installation Option (1) by drilling method


- mark the location to be installed
- mount the tilt plates on the structure in specified location
- ceramic tilt plates are bonded to the structure
- bronze tilt plates can be bonded or screwed to the surface

Installation Option (2) by epoxy method


- mark the location to be installed
- place epoxy compound or equivalent and mount the tile plates on the
structure in specified location
- tilt plates can be bounded to the surface using by epoxy compound or
equivalent
- initial reading is taken based on epoxy compound rigidity between the
structure and the tiltplate

Figure_Tilt meter and Tilt Plate

GIE Pte Ltd Page 2 of 2

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