What are the cases where it is necessary to re-determine the depth (length) of underground concrete piles or Bored piles or Driven piles?

Depth (length) of underground concrete piles?

+ Old projects, newly acquired by investors need  inspection to appraise the project
+ Construction problems with subsidence, tilting, cracking… need to be evaluated for load-bearing piles to fix
+ Investor accurately determines the stability of the project. Does the pile driving depth reach the designed geological layer?

As part of the project re-evaluation project, it is necessary to re-determine the depth

(length) of Larsen piles, underground bored piles, and driven piles.

The consulting and construction unit of My Son Applied Science Research Co., Ltd. offers:

Measure electromagnetic induction to determine the depth of concrete piles and underground Larsen piles based on the principle of electromagnetic induction (EM), and

Field work conducted by three engineers Nguyen Nam Tran Quoc Trung, and Nguyen Thang at the site.

Data analysis at the office by Dr. Nguyen Xuan Kha.

What types of underground piles can determine depth and length?

+ Driven concrete piles

+ Bored piles

+ Larsen steel

+ Bridge pillars

Methods for Determine Underground Pile Lengths?

Determination of pile length under the existing structure is challenging because the investigation method must be non-destructive to maintain the integrity of the structure. Determining the lengths of existing or old underground piles requires a combination of investigative techniques, including historical records, non-destructive testing, and visual inspections. Here’s a step-by-step approach:

There are several methods available in the literature for pile-length investigation. The methods for foundation investigation can be broadly classified into Direct and Indirect methods. Direct methods such as Sonic logging testing require access to the pile where accelerometers are attached close to the top of the pile, Parallel Seismic,  Borehole Radar, and  Borehole Electrical Resistivity.

The new technology is electromagnetic induction applied by My Son Company:

Applying the principle of electromagnetic induction, using a high-frequency transmitting antenna to create a fluctuating electromagnetic field that spreads in conductive objects, relying on the receiving antenna to collect data.  

Equipment includes:

– RD signal receiver displays signal strength parameters.

– The Tx transmitter allows transmission of different frequencies and different powers.

– The sensor is driven down for logging signal in the well

Implementation process for determining underground Pile Lengths -Bored piles- Driven piles?

Based on the operating principle of the device, including 2 processes:

Survey and analyze data at the scene.

Firstly, Drill a borehole next to Larsen piles, bored piles, bridge abutments, and centrifugal pressed piles at a distance of 1.5m

Secondly, Check the machine and set the appropriate machine operating parameters

Thirdly, Proceed to drop tools to measure electromagnetic induction and elastic waves in the borehole to collect data

Finally, Analyze and process results using specialized software at the office.

The professionalism of survey work?

For many years in the underground object survey industry, modern equipment was continuously applied to meet the needs and high accuracy for determining concrete pile depth.

Please contact our hotline at +84 963247151 or mail: mysoncrsa@gmail.com for overseas service