Light Weight Deflectometer Test Procedure

The light weight deflectometer lwd is a light weight portable tool used for measuring the bearing capacity deflection of subgrade subsoils and unbound base layers granular layers and backfilling materials. Terratest germany is offering both. The light weight deflectometer lwd is a hand portable falling weight device that first appeared in 1981 at magdeburg germany and developed as in situ testing device by the federal highway research institute and hmp company in germany the lwd has gained acceptance and popularity in several countries such as the united states as there is a growing interest in the use of.

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The zone of influence for the test typically extends to between 1 and 1 5 times the plate diameter.

Light weight deflectometer test procedure.

Using the 15kg falling weight 1 5 times the impact load the measuring range extends from 70 105 mn m. The measuring procedure starts with three pre loading drops for good contact with the ground. Using terratest lwd is the easy and fast way to check quality of soil compaction in construction sites. Lwd measurement is quicker than the isotope measuring method and requires no reference measurements.

No extra electronic device is needed all test data will be stored immediately on your own smartphone or tablet. The test procedure with the light weight deflectometer is operated by the intuitive smartphone app terratest lwd. Using the 10kg falling weight the zfg 3000 light weight deflectometer lwd measures in the range of 15 70 mn m. Light weight deflectometer lightweight deflectometer buy for best price.

Light weight deflectometer for dynamic plate load test using cable or bluetooth technology. A light weight deflectometer lwd is a portable falling weight deflectometer used primarily to test insitu base and subgrade moduli during construction. The app is available for ios and android.