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 Status: Withdrawn · Replaced by: ASTM D Buy this standard.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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Another important use of estimated shear wave velocities in geotechnical design is in the liquefaction assessment of soils.

Remember me for one month. A preferred method intended to obtain data for use on critical projects where the highest quality data is required is included.

Search book d740 Enter keywords for book title search. Other items addressed include source-to-receiver spacing, drilling, casing, grouting, a procedure for borehole installation, and conducting actual borehole and seismic cone tests.

Another assumption inherent in the test methods is that the stratigraphic medium to be characterized can asfm transverse isotropy. 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. In addition, they are representative of the significant digits that should generally be retained.

Enter your account email address to request a password reset: Reporting of test results in units other than SI shall not be regarded as non-conformance with this standard. Contact us svenska Login. Work 7d400 s – proposed revisions of this standard. Shopping cart Close cart 0, foreach: It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Are you sure you want to empty the cart?

ASTM grants you a license as follows: In this system, the pound lbf represents a unit of force weightwhile the unit for mass is slugs.

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NDT System Add-On — Crosshole / Downhole Seismic

These test methods primarily concern the actu. Your shopping cart is empty. 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. The DS method uses a hammer source at the surface to impact a wood plank xstm generate shear and compressional waves. No items in cart.

ASTM D – 17 Standard Test Methods for Downhole Seismic Testing

There were no books found for the applied search filters. Link to Active This link will always route to the current Active version of the standard. Subscribe on standards with our subscription service. Other items addressed include source-to-receiver spacing, drilling, casing, grouting, a procedure for borehole installation, and conducting actual borehole and seismic cone tests.

Register for a trial account. Accurate in-situ P-wave and S-wave velocity profiles sstm essential in geotechnical foundation designs. This implicitly combines two astk systems of units; that is, the absolute system and the gravitational system.

ASTM D7400 – 17

Inch-pound units are provided for convenience. Several types of commercially available receivers and recording systems can also be used to conduct an acceptable downhole survey. Historical Version s – view previous versions c7400 standard. Two methods are discussed, which include using either one or two downhole sensors receivers. In addition the electronic files may not be downloaded or distributed elsewhere over computer networks or otherwise.

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. In addition, the d74000 damping can be determined from CS tests. The values stated in inch pound units may not be exact equivalents; therefore, they shall be used independently of the SI system.

Active view current version of standard. The most complete version of this downhole system, as manufactured by Olson Instruments, is comprised x7400 a borehole source capable of generating shear and compressional waves and a pair of matching three component triaxial geophone receivers.

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D Standard Test Methods for Downhole Seismic Testing, –

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. What is a standard? The OE Website is loaded with Tech Brief and project photos using the equipment shown on this website. It is scientifically undesirable to combine the use of two separate sets of inch-pound units within a single standard. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Reliable results depend on many factors; Practice D provides a means of evaluating some of those factors. The standard is now in your shopping cart. Several types of commercially available receivers and recording systems can also be atsm to conduct an acceptable downhole survey. Link to Active This link will always route to the current Active version of the standard.

Work Item s – proposed revisions of this standard. Heavily-damped sensors should not be used so that spectral smearing, phase shifting, and latency response between sensors is avoided.

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. Combining values from the two systems may result in nonconformance with this standard. The Crosshole Seismic CS system and method determine shear and compressional wave velocity versus depth profiles.

The energy from these impacts is then received by a pair of matching three component geophone receivers, which have been lowered downhole and are spaced 5 to 10 ft 1.

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