Again, we see that the eccentric single shear capacity of bolts tested was not significantly diminished by the degree to which the bolt was tensioned, by catenary action, prying action, loss of preload, or combined loading conditions. Prying effects were evident in all bolts tested in single shear Figure The test apparatus, due to the eccentricity of the load- ing, showed even more signs of prying and catenary action than the concentric double-shear tests.
However, this ad- ditional prying action and catenary action caused no dis- cernible reduction in shear capacity. The ultimate capacity of the bolts tested in eccentric sin- gle tension shear was found to be a function only of the area available to the shear plane.
In the second step, the compres- sion load is applied to the DTI until the gage reads 0. Fi- design and testing of DTIs. In for bolt tension is delegated to a nonmandatory appendix. Galvanized nuts Figure These graphs reveal minor variations between the DTIs from the two manufacturers. In some cases the slope of the Load vs. It should be emphasized that the DTIs from both manufacturers reliably indicated the required minimum tension at the specified DTI gap.
Note that for field tests the specified DTI gap is 0. The field tests checked the performance of a DTI in- stalled against a bolt head, not against a test machine bear- ing block. A feeler gauge was used to measure DTI gaps, Fig.
F Annex A1- load vs. A Plain rather than a direct reading gauge. Annex A1 -F Load vs. F Annex A1-load vs. DTI Gap. A Fig. F Annex A1 - Load vs. Bolt Tension vs. Bolt Tension. Bendigo, R. Laboratory Report No. Stmik, J. Steel Construction, Vol. The DTIs manufactured to F show less variation 5. Salih, N. Aktan, H. Brockenbrough, R. DTIs from both vendors met the requirements of Vol. Kulak, G. Chesson, E.
Test equipment, bolts, washers, nuts, and DTIs Vol. Christopher, R. Research Council on Structural Connections, Load Related Papers. Sakla, Yohanna M. Wahba, and Murty K. By Murty Madugula. By Brent Couch. By Joseph Noel Coscos. By Nhu Huynh. Download pdf. Log in with Facebook Log in with Google.
Remember me on this computer. We have cultivated a group of managers who are ashm with product qualitygood at modern concept of management. Shipped in 7 days after payment. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The manufacturer shall identify and maintain the integrity of each production lot of direct tension indicators from raw material selection through all processing operations and treatments to?
We can manufacture nonstandard parts according to your drawings. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any aatm mentioned in this standard. This specification covers the requirements for two types Types 8. Direct Tension Indicator Finish Plain? The manufacturer shall afford the quality assurance representative all reasonable facilities to satisfy him that the direct tension ast are being furnished in accordance with this speci?
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But opting out of some of these cookies may have an effect on your browsing experience. Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information. The job inspection gap shall be a gap less than the measured DTI test gap at 1.
Packaging and Package Marking For such a plan to be fully effective, it is essential that the purchaser continue to maintain the identi? Originally approved in Aztm tab washers China snap washers China threaded washers. ASTM International takes no position respecting the xstm of any patent rights asserted in connection with any item mentioned in this standard.
The manufacturer shall identify and maintain the integrity of each production lot of direct tension indicators from raw material selection through all processing operations and treatments to? 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.
Current edition approved March 15, Materials and Manufacture 5. Last previous edition approved in as F — 07a. Rejection should be reported to the producer or supplier promptly and in writing. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
This standard does not purport to address all of the zstm concerns, if any, associated with its use. This standard does not purport to address all of the safety concerns, if any, associated with its use. Approved March 15, 1 Revised weathering steel types —3 and —3 to allow furnishing on the basis of a Corrosion Resistance Index of 6 or higher in lieu of speci?
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