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Olson Instruments, Nondestructive Testing Equipment, Crosshole Sonic, Low strain integrity testing of piles and deep foundation length determination, Wheat Ridge Colorado, ndt, test shaft foundations
Olson Instruments, Nondestructive Testing Equipment, Nondestructive Evaluation, Olsen | Testing Infrastructure Nondestructively

July 22, 2018

Available NOW!
CSL Software Update

More Templates, More Features, Auto Report Generation!

NDT System Add-On — Crosshole Sonic Logging

USA Sales: 303.423.1212           Toll Free 1-888-423-1214           International Sales: Click here for Agents
Olson Instruments, Nondestructive Testing Equipment, Crosshole Sonic, Low strain integrity testing of piles and deep foundation length determination, Wheat Ridge Colorado "Olson Instruments, Nondestructive Testing Equipment, Crosshole Sonic, Low strain integrity testing of piles and deep foundation length determination, Wheat Ridge Colorado"

Crosshole Sonic Logging

click here for method graphic [+] foundation shaft drilling, nondestructive testing equipment, drilling contractors in Colorado, single hole sonic logging, cross hole,

Base Model:
CSL-1 [Single Log System]

click here for enlarged view [+]

CSL Version 4.3 Update is NOW AVAILABLE!

Please contact us at:

info@olsonengineering.com if you are interested in a new system or if you have one of our CSL Systems and are interested in a free update. The new CSL Software Version 4.3 is appropriate for running on our Freedom Data PC Transmetta and MM models running Windows 2000 or Windows XP. The software is also appropriate for running on your personal computer or laptop with Windows 7 (NiDAQ Version 9.1.x or better is required if running Windows 7)


Scroll down to see a list of Key Features and Models available for the Crosshole Sonic Logging Add-on System.

Save money! Contact Olson Instruments when adding on to an existing system, or purchasing multiple systems as some of the components are common to other test methods.


Olson's Best Selling Nondestructive Testing System to Test Newly Placed Shaft Foundations!

The Crosshole Sonic Logging system is the most accurate and reliable technique for assessing the integrity of deep foundation elements constructed on-site from concrete or grout. The system is designed for Quality Assurance (QA) testing of newly placed critical drilled shaft foundations and auger cast piles, but can also be applied to slurry walls, mat foundations, and mass concrete pours. Using water-filled access tubes, CSL testing provides assurance that the foundation concrete is sound with no defects such as soil intrusions, necking, sand lenses, voids, etc.

Where defects exist, the extent, nature, depth, and approximate lateral location of the defects can be determined with the CSL method and further refined with Tomographic Imaging Software, which is sold by Olson Instruments. (Note: Optional Tomo software is available for the CSL, UPV, and CS/DS add-on test methods)

A variation of the CSL method, called Single-Hole Sonic Logging (SSL) can also be used on smaller diameter drilled mini-piles and auger cast piles. The Single-Hole Sonic Logging method is used in cases where only a single access tube can be placed in a deep foundation, and tests the concrete quality in the region around
the single access tube.

Freedom Data PC Required,
Sold Separately
ASTM D6760-02, foundation drilling, test newly place shaft foundations, crosshole, cross hole, tomography, single hole, auger cast concrete piles Freedom Data PC


Hands-on training classes are available for all of our NDE test methods at our Wheat Ridge, Colorado (USA) location, which is a suburb located appromately 15 minutes northwest of downtown Denver. Training may be available at your location by one of our agents upon special arrangement.

For complete details about the Crosshole Sonic Logging Systems available as an add-on test with the Freedom Data PC platform, call toll free 1-888-423-1214 or email:



Materials Tested:

  • Drilled Shafts
    (Bored Piles)
  • Diaphragm Walls
  • Slurry Walls
  • Mat Foundations& Seal Footings
  • Mass Concrete Pours
  • Pressure Injected Footings
  • Auger Cast Concrete Piles
  • Water Saturated Media
  • Cemented Radioactive Wastes

Test For:

  • Cracks
  • Soil/Water Instrusions
  • Uncured or Weak Concrete
  • Voids
  • Necking
  • Sand Lenses

Meets ASTM:

  • ASTM D6760-08

Meets ACI:

  • ACI 228.2R


All of Olson Instruments have been researched, tested, and used on-site daily by our sister company, Olson Engineering, world reknowned for NDT consulting. The OE Website is loaded with Tech Brief and project photos using the equipment shown on this website. Purchase our products to “do-it-yourself”, or hire an Olson Engineering NDT professional for your next project


drilled foundations, foundation drilling, crosshole sonic, single sonic, nondestructive testing