Measuring Deections using a Portable Impulse Plate Load Test Device1 This standard is issued under the xed designation E; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon indicates an editorial change since the last revision or reapproval. Scope 1. The method covers the measurement of deection of the load plate rather than the deection of the surface of the pavement or foundation layers see Note 1.
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FH is now routinely using the LWD with very good feedback and useful engineering data. The equipment is an easy to use Zorn LWD. The ZFG is an excellent tool and should be included in any professional contractors equipment list of assets.
This tool should have a similar impact on the construction industry as the laser level. The ability to accurately and reliably measure this aspect of ground condition will improve the quality of the work and remove doubt as to the progress of the project.
I bought my ZFG and on the same day less than two hours later, it had paid for itself. Using this instrument, I was able to demonstrate scientifically, repeatably and independently the quality of the work that we had completed for our client. Ending the disagreement and creating an improved working relationship. Most jobs are not as confrontational as this was however, most jobs are built to a standard.
The contractor can now measure as required, to know on site, at the time of testing if this standard is being achieved. I strongly recommend the ZFG Deflectometer to any earthmoving, civil construction contractor. Good luck with your projects. The feedback I have been receiving over the last few months has lead me to purchase the LWD and incorporate its use as an integral part of our projects.
The method covers the measurement of deflection of the load plate rather than the deflection of the surface of the pavement or foundation layers.
The method covers the measurement of deflection of the load plate rather than the deflection of the surface of the pavement or foundation layers see Note 1. The values given in parentheses are for information only. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Multi-user access to over 3, medical device standards, regulations, expert commentaries and other documents. Worldwide Standards We can source any standard from anywhere in the world. Learn more about the cookies we use and how to change your settings.
ASTM E2835-11 international standard
Historical Version s - view previous versions of standard. More E The deflection is measured at the center of the top of the load plate see Note 1. Accordingly, the test surface shall be as clean and smooth as possible with loose granules and protruding material removed. For gravel surfaces it is recommended that a thin layer of fine sand be placed over the test point. For fine-grained materials, this will help in obtaining a reasonably uniform contact between the load plate and the surface.