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GPC: The Pile Driving Analysis (PDA) System from Piletest

with N_GAPA signal matching software 

Overview

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The GPC system is a cutting-edge Pile Driving Analysis (PDA) system by Piletest. It is designed for both Dynamic Load Testing (DLT) and Pile Driving Monitoring, based on the High Strain Dynamic Load Test method, also referred to as the PDA test.

This system not only monitors the pile-driving installation but also evaluates shaft integrity, driving stresses, and hammer energy. The GPC PDA system ensures reliable and accurate results in compliance with ASTM D4945 and EN ISO-22477-4 standards for dynamic pile testing.

How the PDA Test Works

The PDA test uses a hammer to drive either pilot or production piles, taking advantage of the high-strain impact while measuring the pile with an accelerometer and a strain gauge. The test captures critical data on pile performance, including shaft resistance and toe bearing capacity. In cases where a driving hammer is unavailable, a drop weight can be used for the test. Re-strike PDA tests are often recommended for better insights into pile behavior.

N_GAPA: Signal Matching Software for Pile Load Analysis

The N_GAPA software complements the GPC system by providing detailed pile load analysis and signal matching. It estimates the total bearing capacity of a pile, as well as the distribution of resistance along the shaft and at the toe.

Key features of N_GAPA:

  • Real-time signal analysis during pile installation.

  • Proven to deliver results equal to or better than CAPWAP.

  • No extra cost—N_GAPA is included with the GPC system for automatic pile signal matching.

GPC PDA system advantages 

  • Easy to use

    • Single bolt per sensor on the pile on Comboducer 

    • Comboducer - One sensor includes an Accelerometer + Strain-gauge 

    • Results analysis can be done on-site using the easy-to-operate N_GAPA software.

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  • Complementary signal analysis software - N_GAPA

    • Proven to be equal to and better than CAPWAP

    • Real-time signal analysis as you hammer the pile

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  • Industry Standard 

    • ​It is proven to have the same performance/results as CAPWAP compared to the same pile.

    • Compliant with ASTM D4945 and EN ISO-22477-4

Comboducer - One sensor includes Accelerometer + Strain-gauge
Easier and Faster to install on the pile or shaft.

  • All included 

    • GPC connects to any PC via wireless WiFi. It will also connect to future computers, while embedded systems quickly become outdated. The complete software suite runs on any PC.

    • Software suite includes 

      • GPC Acquisition — For collecting the sensor data and presenting real-time driving plots

      • GPC Review — Reporting of test results and capable of automatic signal matching

      • N_GAPA—An Automatic Pile Analysis software for signal matching analysis. It has been proven to be faster and equal to CAPWAP.​

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"The GPC data acquisition system is proven to be excellent..."

Malaysia

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  • Reliable

    • 100% QA tests, vibration, and extreme temperature

    • The GPC case can tolerate drops and shocks

    • 3-year warranty!

    • Rugged connectors, PU cables, and details.

  • Devoted service

    • Complimentary software support and updates (included)

    • Analysis, interpretation, and reporting assistance (included). We will do/review your first reports to ensure they are up to the highest standards.

    • We also offer SOS (Second Opinion Service) support.

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Software Suite for Complete Pile Analysis

  1. GPC Acquisition – Collects sensor data and presents real-time driving plots.

  2. GPC Review – Offers detailed reporting of test results and can automatically match signals.

  3. N_GAPA – Performs automatic pile analysis for signal matching, providing faster results equal to CAPWAP.

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Heading 5

How can I Take a Deeper Look at the GPC,
PDA system?

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  1. Look at actual case histories. 

  2. Look at N_GAPA software snapshots.

  3. View a GPC sample report.

  4. Read the  GPC technical specifications (Data Sheet)

  5. Read the N_GAPA technical specifications​ (Data Sheet)

  6. The GPC is  ASTM D4945 and EN ISO-22477-4  dynamic pile testing standard-compliant. See this ASTM D 4945 compliance statement. 

  7. Get the evaluation version of GPC's software.

  8. The GPC system user manuals 

    1. GPC Acquisition

    2. GPC Review

    3. GPC Wave

    4. N_GAPA​

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How can I find out even more?

  1. Fill out and send the information request below.

  2. Contact our Resellers

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