ASTM D7400 PDF

Standard Number, ASTM D – Title, Standard Test Methods for Downhole Seismic Testing. Status, Current. Publication Date, Standard Test Methods for Downhole Seismic Testing. Status: Withdrawn · Replaced by: ASTM D Buy this standard. Price: SEK. PDF. Add to cart. ASTM D Significance and Use. The seismic downhole method provides a designer with information pertinent to the seismic wave velocities of the materials .

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Shopping cart Close cart 0, foreach: Work Item s – proposed revisions of this standard. This is typically accomplished by coupling a plank to the ground near the borehole and then impacting the plank in the vertical and horizontal directions. Search ast title Enter keywords for book title search. Reliable results depend on many factors; Practice D provides a means of evaluating some of those factors.

ASTM D – 14 Standard Test Methods for Downhole Seismic Testing

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Several types of commercially available satm and recording systems can also be used to conduct an ashm downhole survey. The Crosshole Seismic CS system and method determine shear and compressional wave velocity versus depth profiles. The electronic file may not be reproduced in any way. Other items addressed include source-to-receiver spacing, drilling, casing, grouting, a procedure for borehole installation, and conducting actual borehole and seismic cone tests.

Active view current version of standard. Historical Version s – view previous versions of standard. Click here for Agents. In addition, they are representative of the significant digits that should generally be retained.

These test methods primarily concern the actual test procedure, data interpretation, and specifications for equipment which will yield uniform test results. Reporting of test results in units other than SI shall not be regarded as non-conformance with this standard. Other items addressed include source-to-receiver spacing, drilling, casing, grouting, a procedure for borehole installation, and conducting actual borehole and seismic cone tests.

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You currently cannot view this content. The values stated in inch pound units may not be exact equivalents; therefore, they shall be used independently of the SI system. The Downhold Seismic DS investigations are similar to CS investigations, but require only one borehole to provide shear and compressional velocity asttm profiles.

ASTM D7400 – 17

Another important use of estimated shear wave velocities in geotechnical design is in the liquefaction assessment of soils. It is ashm the scope of these test methods to consider significant digits used in analysis methods for engineering design. Report error on page. Print 1 2 ast, 4 5 page sstarting from page current page.

Special consideration should be given to the types of receivers used and their configuration. Are you sure you want to empty the cart?

NDT System Add-On — Crosshole / Downhole Seismic

These dynamic soil and rock properties are often utilized for earthquake design analyses necessary for certain structures, liquefaction potential studies, site development, and dynamic aastm foundation design. A preferred method intended to obtain data for use on critical projects where the highest quality data is required is included.

The DS method uses a hammer source at the surface to impact a wood plank and generate shear and compressional waves. Work Item s – proposed revisions of this standard. In addition, they are representative of the significant digits wstm should generally be retained. The quality of the results produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities.

ASTM D – 17 Standard Test Methods for Downhole Seismic Testing

Please sign into an account with a subscription to this content, or email for help at support madcad. Your shopping cart is empty. Contact Olson Instruments when adding on to an existing system, or purchasing multiple systems as some of the components qstm common to other test methods.

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The instruments are coupled to the side of the grouted borehole inclinometer casing, allowing for the detection of shear and compressional waves as they pass between the receivers. Contact us svenska Login. Sustainable Development Goals and standardisation, how do they connect? Sorry, this content is unavailable because your browser adtm not support iframes. Special consideration should be given to the types of receivers used and their configuration. Data reduction and interpretation is limited to the identification of various seismic wave types, apparent velocity relation to true velocity, example computations, use of Snell’s law of refraction, and assumptions.

What is a standard? Other items addressed include source-to-receiver spacing, drilling, casing, grouting, a procedure for borehole installation, and conducting actual borehole and seismic cone tests. In addition the electronic files may not be downloaded or distributed elsewhere over computer networks or otherwise. Another assumption inherent in the test methods is that the stratigraphic medium to be characterized can have transverse isotropy.

Transverse isotropy is a particularly simple form of anisotropy because velocities only vary with vertical incidence angle and not with azimuth. Data reduction and interpretation is limited to the identification of various seismic wave types, apparent velocity relation to true velocity, example computations, use of Snell’s law of refraction, and assumptions.

Users of this standard are cautioned that compliance with Practice D does not in itself assure reliable results. Combining values from the two systems may result in nonconformance with this standard.

The OE Website is loaded with Tech Brief and project photos using the equipment shown on this website.

This implicitly combines two separate systems of units; that is, the absolute system and the gravitational system. Please note that the selected standard is invalid. Inch-pound units are provided for convenience. ASTM grants you a license as follows: