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Standards Development
The standard is to provide a test method and associated criteria to determine the slip factor for a particular faying surface treatment, with or without a faying surface coating.
The test method in Annex P of ISO/DIS 17607-6 harmonizes the methods of EN 1090-2 and the RCSC Specification Annex A. However, it does not include Japan’s test method. Results in Annex D of ISO/DIS 17607-6 have different values for similar or even identical conditions (see Annex D from ISO/DIS 17607-6) because of differences in test procedures and the performance criteria. It would be beneficial to have a single, unified standard for test method, including acceptance criteria, for use in steel construction. This would ease the burden for coatings manufacturers that must test their coatings to different national standards, and also expand the possible selection of coatings systems that are not currently tested to a particular national standard.
The purpose of this test is to determine the slip factor for a particular surface treatment, often involving a surface coating.
The test procedure is intended to ensure that account is taken of the possibility of creep deformation of the connection.
The validity of the test results for coated surfaces is limited to cases where all significant variables are similar to those of the test specimens.
The following variables shall be taken as significant on the test results:
a) the composition of the coating;
b) the surface treatment and treatment of primary layers in case of multi-layer systems;
c) the maximum thickness of the coating;
d) the curing procedure;
e) the minimum time interval between application of the coating and application of load to the connection;
f) the property class of the bolt;
g) number and configuration of washers; and
h) grade of steel plates
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