May 04, 2022
Also called a data recorder, a datalogger is a compact electronic device or a computer program used to monitor and record data over time. It is an essential tool in geotechnical instrumentation. It also aids structural and environmental monitoring.
Various factors influence the healthy working of the structure, including hydrological, geotechnical, structural, and other power-related issues. Avoiding dam failure requires several dam monitoring instrumentations.
As bridges as a major investment for the society, there is a lot that goes behind the scene for its inspection and maintenance. It is very crucial to maintain the safety levels in bridges as any damage or failure can lead to a devastating loss of life and property. For this reason and more, Encardio Rite takes advantage of modern technology and their in-house manufacturing abilities to allow for accurate bridge monitoring.
India has around 21 reactors at seven nuclear plant locations with a total capacity of 6,680 MW. Nine more reactors are under construction out of which two are at Gorakhpur and seven are being constructed under expansion plan of existing capacity at Kalpakkam, Kakrapar, Rajasthan, Kudankulam & Tarapur.
Dam Rehabilitation and Improvement Project was launched by Central Water Commission (CWC) backed with World Bank as its financial aider. In 2020, the DRIP project launched its II and III phases. Currently, more than 225 dams projects in India are connected with this project.
Geotechnical Database Management contains the monitoring reports and information of any small or large project site. To collect this valuable data, accurate and precisely-engineered monitoring equipment is required. Encardio Rite offers their in-house developed database management system with their world-class smart sensors and dataloggers. With their 55 plus years of experience, Encardio Rite yet again proves why they are the biggest provider of geotechnical and monitoring services.
Seepage of water through, around or under a dam is expected in all embankment dams and even in concrete dams. Thus, seepage monitoring becomes an essential performance indicator for all dams, embankment dams in particular.
The change observed in the seepage flows or their composition can be an essential indicator of the internal issues of the structure of the dam.
A key role played in this lifecycle is by geotechnical monitoring, which ensures that a tunnel isn’t just maintained, but also exists harmoniously with other structures around it. In this blog, we’ll explore a specific part of Geotech monitoring that gets this job done: tunnel monitoring sensors.
This is where a bridge monitoring system comes into the picture. Using modern technology, this system is utilized to gain critical information about a bridge’s structural health, before, during, and after a construction project. Consequently, any risk or hazard to the bridge is avoided, using analytical data to take measures beforehand. This not only helps to protect the structure but the vehicles and commuters using it as well.
Located in Maryland, USA, the Malcolm X Bridge is one of the most prominent overpass bridges in the region. It is also one of the primary structures located in the direct vicinity of the Purple Line transit system, a multi-billion dollar project currently under construction in Maryland. As the bridge falls right into the project axis of the transit, monitoring it was one of the most crucial steps during the pile foundation construction.
Piezometers or pore pressure meters are the pressure transducers that are installed beneath the ground to measure the sub-surface piezometric level within groundwater level, soil, or rock. Now that you are well-versed with the piezometer definition, let’s move forward to understanding its usage in the geotechnical domain.
Strain Gauges are important geotechnical tools that measure strain in underground cavities, tunnels, buildings, concrete, masonry dams, bridges, and embedment in soil/concrete. etc. The main purpose of a strain gauge is to indirectly determine stress and its variation with time, quantitatively. Change in stress is determined by multiplying the measured strain by the modulus of elasticity.
Wind power is one of the fastest-growing renewable energy technologies today. According to the International Renewable Energy Agency (IRENA) 2016, wind energy contributed 16% to the electricity generated by renewable energy sources. Wind Turbines and wind farms are rising to the forefront, becoming an essential source of renewable energy. They are increasingly employed by many countries to reduce the use of fossil fuels.
Advances in geotechnical instrumentation, surveying technologies, and data transmission systems have made it possible to monitor slopes remotely. The economical monitoring systems also provide warnings and alarms in case of any failure or unusual behaviour.
Encardio Rite offers a variety of underground mine monitoring and open-pit monitoring instruments for the measurement of deformations, groundwater, strain, stress, and load. These monitoring sensors have proven to be extremely reliable and can work efficiently with high performance under harsh conditions. It provides accurate and important quantitative data regarding the behaviour of the surrounding rock/ground, performance of the ground support systems, safety and stability of the underground mining work, and the excavation progress.
Encardio Rite’s Model EAN-26 readout unit can be used to log profiles of boreholes up to 300 meters deep in 0.5/1.0 meters increment or up to 999 feet deep in 2.0/4.0 feet increment, using either biaxial or uniaxial inclinometers.The readout unit can store readings from more than 1000 boreholes.
The construction on top of a soft soil foundation is usually delayed until there is an assurance that there will be no damage due to the settlement that occurs during subsequent consolidation. If the delay cannot happen, the time is reduced by surcharging and/or by the installation of vertical drains.
Tilt changes can also occur due to the loading of the structure, such as loading of a dam during impoundment, a diaphragm wall during excavation or, a bridge deck due to wind and traffic.
The data captured from the tiltmeter gives early warning of threatening deformations, allowing time for corrective action to be taken.
Geodetic Monitoring is the study of the geometry of the earth, and at the same time, developing methods and techniques using space technology to monitor them. If used judiciously with geotechnical instrumentation, geodetic monitoring provides co-related data which is relevant and extensively used in civil construction and structural monitoring. Encardio Group uses an in-house developed control box with advanced software to control robotic total stations.
Advanced Geotechnical testing & monitoring is necessary to keep a regular check on structures like dams, bridges, tunnels, railway tracks, buildings, etc. Starting from the surveying of land before constructing a structure on it till its completion, geotechnical monitoring plays a vital role.
Geotechnical Instrumentation and Monitoring are a sub-branch of Geotechnical Engineering. Geotechnical Instrumentation refers to the various sophisticated instruments that are used to monitor geotechnical structures, sites, and the environment. Geotechnical Instrumentation and monitoring play a significant role in the success of any construction project. You can think of it as a huge umbrella that shades all the prominent construction projects ranging from tunnels, high-rise buildings, deep excavations, boreholes, to airports, seaports, railways, dams, and bridges.
But even a minor failure in these structures can cause loss of property as well as human life.Hence, regular structural health monitoring is a must.
Let’s discuss more on structural health monitoring, geotechnical instrumentation, and how it makes the world a safer place to live.
The usage of instruments and field measurements are extensively on the rise, especially for optimised construction control and safety monitoring. The increased demand has led to the need for a cost-effective instrumentation monitoring network system that would allow monitoring of various parameters but within budgeted walls.
Civil Engineering is a complex and interesting field. When it comes to the specific arena of geotechnical engineering, monitoring, and Instrumentation, there are various sensors that are employed to get the work done. In this article, we are going to discuss data loggers, it’s various types, and how they are used in the geotechnical field
When it comes to tunnels and underground caverns, geotechnical instrumentation and monitoring play a huge role as it deals with naturally occurring heterogeneous materials. With the emergence of disruptive technology, field instrumentation for safety monitoring has become highly sophisticated and advanced over time.
Pressure cells are one of those geotechnical instruments that are designed to monitor stress or pressure on concrete structures, retaining walls, abutments, embankments, buildings, tunnel linings, etc.
Dam Monitoring Instrumentation is necessary as it provides information about the performance of the dam while also giving an early warning in case of any issue that may arise. The scope of instrumentation is not entirely dependent on the complexity or the size of the reservoir, but also has to do with the possibility of a loss of life and property downstream.
Data logging means to record events, observations, or measurements systematically. And, the device involved in data logging is known as a data logger. Data loggers come into picture whenever there’s a need to take continuous readings of an instrument. Significantly used in the field of geotechnical instrumentation and monitoring, data loggers are a necessary device.
Known for its scenic beauty, Rohtang Pass holds strategic importance for India. Every year, during July to September, the road becomes a passage to the people of Lahul valley transporting their cash crop, potatoes and peas to the markets across Atal Tunnel to Kullu and earning money for the unstable weather period of 9 months.
We have built large structures like dams, tunnels, power plants, skyscrapers and much more with the help of technological advances and science. Essentially made to make our life easier, these structures need to be taken care of lest they result in a tragedy. Since these structures stand to fail over a minor issue, it is important to give it an in-depth and minute look to ensure the complete reliability of the constructions.
Load cells are one such instrument that are commonly used to measure weight. They can measure things as small as a needle to as heavy as big drilling machines. You can find load cells everywhere, even in your nearby grocery stores to weigh your items, though, they are inside the instruments.
Strain Gauges or Strain Gages are the geotechnical instruments used to measure strain or pressure applied on an object. This object can be as small as a machine or even as large as a TBM. Invented in 1938 by Edward E. Simmons and Arthur C. Ruge, strain gauges have been extensively used in geotechnical engineering since then.
With the ever-increasing population and depleting resources, it becomes extremely critical to take care of the current resources to ensure a better, more sustainable future. As the human population is on a continuous rise, there have been concerns about not having enough resources in the future for the generations to survive with ease and comfort. One such resource is water, which is heavily exploited, polluted, and not paid enough attention.
Bridges constitute a very important component of the transportation network. As they are a major investment for society and are at the core of public transport and usage, it is extremely crucial to keep an eye on their safety and maintenance. This is achieved through geotechnical instrumentation and monitoring, which is involved in the pre, post, and after-construction phases.
In this article, we are looking at the latest innovation for the Encardio team and a never-seen-before geotechnical instrument called In-place 3D Inclinometer Settlement System.
Piezometer or pore pressure meter is one of the extensively used geotechnical instruments. The piezometers are primarily used to measure pore pressure in concrete structures, boreholes, rock fills, soil, etc. However, different types of piezometers find their application in the geotechnical or geo-structural study associated with large civil engineering constructions like tall buildings, dams, underground tunnels etc.
Vertical In-place Inclinometer system is designed for the monitoring of lateral movement in the soil, slopes, earthworks, structures, etc. Encardio Rite in-place inclinometer system is designed with a series of in-place sensors that are placed inside inclinometer four grooved casing. To use the sensor for monitoring, a group of four grooved access tubes are attached to one another with the help of fixed couplings. This makes it easier to install in a borehole or embed in an earth/rockfill or fixing it to the vertical face of the structure.
The first line (Red) of the Dubai Metro, which covered 10 stations was inaugurated at 9:09:09 pm on 9 September 2009 by Mohammed bin Rashid Al Maktoum, Ruler of Dubai. Since then, the line has been expanded to serve 29 stations, while the green line now serves 20 stations. These two lines were constructed and monitored in two different phases, with each of one with their own set of challenges and difficulties.
The inclinometer is a geotechnical instrument that is used to measure the angle of inclination or tilt of an object with respect to gravity’s direction. We use the output to determine the variation with time in structures like retaining walls, diaphragm, and many more. In this article, we will be looking at the working, application, and features of Encardio Rite Wireless in-place Inclinometer.
Tilt meter is a geotechnical instrument widely used to monitor the vertical rotation, deflection, and deformation of the diaphragm and retaining walls. It is very sensitive and can pick up even the minute changes that occur, whether it is on the ground or a structure. In this article, we will be looking at Encardio Rite’s Wireless tilt meter that has time and time again proved its worth and has been used in multiple projects with utmost accuracy and reliability.
Have you ever wondered how geologists get to know if the volcano is about to erupt or not or whether a building is about to fall or not? Well, all of this is measured using a geotechnical monitoring instrument known as tiltmeters.Tiltmeters are a type of inclinometer that continuously monitor even the minor rotation, deflection, & deformation of retaining walls, diaphragms, volcanoes, dams, landslides etc. Beam Sensor, on the other hand, is similar to an El tiltmeter, designed to monitor differential movement and tilting of structures.
Geotechnical Monitoring is used to detect problems and threats in structures, bridges, railways, walls, mines, tunnels, and every other kind of construction. An important part of civil engineering, geotechnical monitoring is used to prevent mishaps and accidents, thereby saving a lot of lives, money, and time. Since we are talking specifically about bridges today, this comes under structural monitoring.
Establishment of metro not only solves the problem of traffic and pollution but also promotes the integrated development among different regions. Metros are celebrated by the residents, as it greatly helps to reduce the distance across the city. Being pulled closer with the help of advanced technology, it is only fair to do it correctly.
Encardio Rite Model EDS-64UD borehole extensometer is used for upward or downward sloping hole working with stainless steel or fibreglass connecting rods. It is capable to be installed in a borehole of φ 50 mm with a diameter at the mouth of borehole increased to 62 mm up to a depth of 200 mm.
It consists of one or more anchors and a reference plate. Anchor or anchors are set in same borehole or in different boreholes drilled adjacent to the first borehole. The extensometer helps to accurately measure distance between various anchors with respect to reference plate and thus monitor with passage of time their relative displacement.
Encardio Rite Borehole Vibrating Wire Extensometer is a specially designed instrument that assists civil engineers and geologists in the measurement of deformation of rock mass and adjacent or surrounding soil. Coupled with anchor bolt load cells and tape extensometer, it makes an essential geotechnical instrument for investigating and monitoring of foundations, slopes & embankments and for studying the behaviour of rock around underground cavities, tunnels and mines.
Mechanical Borehole extensometer Model EDS-63UD measures the displacement taking place in a borehole with reference to time. It helps to accurately measure the change in distance between various anchors and monitor GL their relative displacement with time.It is usually assumed that the deepest anchor is in the stable ground and so any change in anchor spacing is interpreted as sag of roof bed, movement of the sidewall or slope, settlement of foundation etc.
Encardio Rite Mechanical Borehole Extensometer Model EDS 63U/D is befitted for upward, downward, or inclined boreholes. It is specifically designed to assist civil engineers and geologists with the measurement of deformation of rock mass and adjacent or surrounding soul. It essentially consists of one or more anchors and a reference plate.
Multipoint Borehole Extensometer is a geotechnical instrument designed to assist civil engineers and geologists in the estimation of deformation of rock mass and adjacent or surrounding soil. Clubbed with anchor bolt, load cell, and tape extensometer, it constitutes an integral piece of equipment used to investigate and monitor the foundations, slopes, and embankments in order to study the behaviour of the rock around underground cavities, tunnels and mines.
Encardio Rite Model EAN-41M is a MEMS tilt sensor (beam sensor) designed for monitoring inclination and vertical rotation of structures. Any change in a structure that is caused due to construction activity like excavation; tunnelling or de-watering that may affect the ground supporting the structure is called a tilt change.
The Encardio Rite Model EAN-90M MEMS Tiltmeter is used in the monitoring of inclination and vertical rotation in structures such as buildings, dams, etc.
Robust and robust during construction, the high-resolution tiltmeter has great temperature stability. It is equipped to have a voltage output which can be detected by any readout unit that can measure the differential voltage output.
Tiltmeters are used to monitor deflection, vertical rotation, and deformation in the diaphragm and retaining walls.
Encardio Rite Model EAN-70M is a portable tiltmeter that uses an anodized aluminium housing which contains an accurate accelerometer and suitable signal conditioning circuit.
The use of this load cell allows transmitting frequency by over 1km of cable length without finding disruptions from water penetration, temperature fluctuations, contact resistance or leakage to ground. It finds its application in series with a hydraulic jack for applying load. Consequently, it verifies load as applied by the hydraulic jack.
Encardio rite Model ELC-210 Compression load cell is designed for the measurement of loads or forces and finds its application in load measurement in struts. The load applied to the cell can be measured by using any standard digital read-out unit suitable for resistance strain gage applications.
Engineered precisely for civil engineering application, Encardio Rite Model ELC-30S Centre Hole Load Cell includes a high strength martensitic stainless steel cylinder. Eight strain gauges are positioned at 45 degrees to each other, thus depreciating the impact of uneven and eccentric loading. The strain gauges are then connected in a Wheatstone bridge circuit.
Piezometer or pore pressure meter is one of the extensively used geotechnical instruments. They are primarily used to measure pore pressure in concrete structures, boreholes, rock fills, soil, etc. However, different types of piezometers find their application in the geotechnical or geo-structural study associated with large civil engineering constructions like tall buildings, dams, underground tunnels etc.We will be discussing the installation procedure of Piezometers in earth/rockfill dam and concrete dams.Let’s get started.
They are primarily used to measure pore pressure in concrete structures, boreholes, rock fills, soil, etc. However, different types of piezometers find their application in the geotechnical or geo-structural study associated with large civil engineering constructions like tall buildings, dams, underground tunnels etc.We will be discussing the installation procedure of Piezometers in earth/rockfill dam and concrete dams.Let’s get started.
Many different types of piezometer are used during geotechnical monitoring and instrumentation. Piezometer installation is done accurately and with precision to avoid future disruption in the readings.
Vibrating Wire Piezometer is installed in a borehole using a fully grouted method. Using a traditional method involves the placement of sand pockets surrounding the piezometers, grout columns, and bentonite seals to separate piezometers at different levels. It is a slow and complicated process which also poses a great risk of unintended communication between piezometers.
The vibrating wire piezometer installation procedure requires complete knowledge and assistance. Before starting with the procedure, let’s first look at the list of tools needed for the installation.
A vibrating wire piezometer is used to measure pore water pressure in the soil, earth/rock-fill foundations and concrete structures.
Measurement of pore water pressure is used to detect the level and flow pattern of groundwater. It is also used to determine the flow pattern of water in earth/rockfill & concrete dams and the load-bearing capacity of soil or rock.
It becomes a little problematic to install inclinometer casing in a diaphragm wall or a pile. The inclinometer casing gets distorted and stressed when firmly tied to a steel structure from bottom to top. The heat of hydration and stresses generated during the concreting process may distort and even crack the casing.
The digital inclinometer installation procedure requires complete knowledge and assistance. Let us see how it is installed in a borehole. Before diving into that, we recommend you to go through the Digital Inclinometer System: Preparing for Installation.
The digital inclinometer system is a reliable instrumentation system that displays the measured data through an Android mobile phone. Its readout has built-in data storage facilities and capability of transferring stored data to a computer.
Geotechnical monitoring and instrumentation is a vast field that includes risk management, structural health monitoring, hazard prevention, and early-warning systems using geotechnical sensors. One such geotechnical instrument is the inclinometer.
The EAN-70M tilt measurement system consists of two components – a portable tiltmeter and several Aluminium tilt plates. Individual tilt plates are usually anchored to the structure, but may also be bonded to a smooth clean surface i.e. granite, stone, tiles.
Tiltmeter is one such instrument that is designed to monitor the amount of deflection or tilt in a structure. While tiltmeters can be of various types, here is everything that you need to know about El Tiltmeters – how they operate, how are they installed and what are its applications.
An extensometer is a high precision instrument specially designed for geologists or civil engineers to measure the elongation of a material under stress. This instrument is perfect for tensile tests.
Temperature sensors are a simple instrument that measures the degree of hotness or coolness and converts it into a readable unit. But, have you ever wondered how the temperature of the soil, boreholes, huge concrete dams or buildings is measured? Well, this is accomplished through some of the specialised temperature sensors.
Sustainability and durability are strictly related to the monitoring of structures and the ability of the observer to deliver complete and efficient data for the object’s behaviour within time. Structural Health Monitoring is an inevitable part of geotechnical monitoring that ensures the regular health check-up of existing buildings, monuments, structures, dams, tunnels, etc.
The Gotthard Base Tunnel is one of the most extremely engineered megastructures in World History and was a big challenge for the geotechnical consultants.
There are several databases available in the market to correlate the data. One of the most advanced software is Terramove. The geotechnical database management has been used to monitor many metro projects, one of the most recent being the Gold Line at Qatar.
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