ASTM D4945-00 PDF

Designation: D – 00 1 This test method is under the jurisdiction of ASTM Committee D18 on Soil Last previous edition D – Dynamic Pile Testing. ASTM D Pile Driving Analyzer ®. Garland Likins, Pile Dynamics, Inc. PDCA Professor’s Institute. Garland Likins, Pile Dynamics. standard by ASTM International, 11/01/ View all product details ASTM D/DM Priced From $ ASTM D November

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The modern f4945-00, which is considered as one of the significant beneficial changes that have been made to the system since the last Irish survey in is the introduction of theodolite to measure the pile displacement during the impact [6], [7]. The comparisons of load-settlement behaviors for dynamic and static load tests, shown in Figure 5Figure 6 and Figure 7indicate that the predicted settlement from dynamic and the measured settlement from static are generally consistent to a reasonable extent as reflected by the results of towers 7 and 8.

D9445-00 can be concluded that the dynamic load pile test can be used for predicting pile capacity and pile integrity under proper care and it should be calibrated by at least one static test.

The dynamic load is converted to static load and the predicted static load-settlement curve can be plotted. The capacity of the hammer should be large enough to achieve sufficient pile settlement so that the resistance of the tested pile can be fully mobilized. 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.

The electronic theodolite is placed 3 to 5m from the pile head. The side of the cap is instrumented with two strain gauges, two accelerometers and electronic theodolite target. Enter the email address you signed d49945-00 with and we’ll email you a reset link. All tests were carried out on bored concrete piles.

L Load KN 0 0 0. The pairs of accelerometers and strain transducers are fixed to opposite sides of the tested pile, about at least one shaft diameter below the head, either by drilling and bolting directly to the pile or by welding mounting blocks to ensure a reasonably uniform stress field at the measuring elevation [5], [2]. Note A suitable follower may be required for testing cast-in-place concrete piles. Rajagopal, Post Graduate Student, C.

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Note High-strain dynamic testing requires a strain at impact which is representative of a force in the pile having the same order of magnitude, or greater, than the ultimate capacity of the pile. For mandrel driven atm, the mandrel may be instrumented in a similar way to a driven pile provided that the mandrel is constructed of a single member with no joints.

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The two test results are consistent to a good extent. Q Mhaiskar, S. The dynamic load pile test, which is a simple quality control test offering a considerable savings of time and cost and requires less space, can be used for predicting pile capacity and pile integrity under proper care and it should be calibrated by at least one static test. The static pile load test is conducted at low strain and takes longer time than the dynamic pile load test, which is conducted at considerably higher strain [1].

D — 00″ 5- V4945-00 T. Svinkin analyzed a distinctive case history presented by Briaud et al.

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Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Skip to main content. Click here to sign up. A pair of strain transducers receives the signals necessary to compute force, while measurements from a pair of accelerometers are integrated to yield velocity. The formation at this area is predominantly coralline deposits consisting of completely to slightly weathered coral reef limestone that contains marine shells and fossils.

Link to Active This link will always route to the current Active version of the standard. Help Center Find new research papers in: The length of the cap should be at least 1. The measured force at the pile top is separated into components upward and downward. Four case studies conducted in Red Sea state were taken.

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The dynamic or total reaction, Rdy is calculated for each hammer blow and plotted versus cumulative penetration for the whole set of blows. This test method is applicable to deep foundation units that function in a manner similar to foundation piles, regardless of their method of installation provided that they are receptive to high strain impact testing.

This paper has been focused on this type of pile loading test. Solanki, Associte Professor, and Y.

The initial part of the load-settlement curves Figure 6: These d494-00 are connected to an instrument such as a pile driving analyzerthat records, processes and displays data and results [2], [3], [4]. A pile cap, as an extension to the shaft head with the same diameter as the shaftshould be constructed. Three projects are residential tower buildings representing a part of the residential tower buildings complex of Red Sea state. Q The main difference between this system and other dynamic load test systems is the using of an electronic scanning theodolite that records penetration for each blow and records real time elastic displacement [9].

But generally the settlements predicted by dynamic load test are slightly higher than the settlement measured by the static load test. Log In Sign Up.

This shows a reasonable agreement between the two test results. This is Portsudan city, which is located in western coast of the Red Sea in eastern Sudan [11].

For a specific precautionary statement, see Note 5. The pile design for projects should be optimized by determining the actual ultimate pile capacity, which may need to conduct r4945-00 test to failure or near to failure.

In our opinion, it is wise that to determine the actual pile ultimate capacity for a project by testing at least one pile to failure. Q Figure 6-a: