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ASTM-D7401:2008 Edition

ASTM-D7401:2008 Edition

$40.63

D7401-08 Standard Test Methods for Laboratory Determination of Rock Anchor Capacities by Pull and Drop Tests

Published By Publication Date Number of Pages
ASTM 2008 7
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1.1 These test methods cover the quantitative determination of the working and ultimate static or dynamic capacities of full scale rock anchors. Dynamic capacities are determined to simulate rockburst and blasting conditions (1) . The rock anchors are installed in steel pipe to simulate standard boreholes sizes. Rock anchor capacities are determined as a function of resin to steel bolt bond strength and steel bolt yield strength. These tests are not intended to determine rock anchor to borehole rock surface shear strength.

1.2 These test methods are applicable to mechanical, resin, or other similar anchor systems.

1.3 Two methods are provided to determine the capacities of rock anchors, as follows:

1.3.1 Method A Using a horizontal hydraulically loaded pull test system.

1.3.2 Method B Using a vertical dynamically loaded drop test system.

1.4 The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard.

1.5 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D 6026 .

1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. 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.

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
Terminology
Summary of Test Methods
2 Significance and Use
Apparatus
Procedure
FIG. 1
3 FIG. 2
FIG. 3
4 Calculations
TABLE 1
5 Report
Precision and Bias
Keywords
TABLE 2
TABLE 3
6 TABLE 4
TABLE 5
FIG. 4
FIG. 5
7 REFERENCES

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