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ETAG 001

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A comparison of the characteristic values in Equation (6.13) is not required, if the conditions in Part 1, 6.1.1.1(d)are fulfilled or if the coefficient of variation of the ultimate bond strength values are 15% in both test series.The results of the sustained load tests at maximum long term temperature according to 5.1.2.5(b) shall becompared with the results of the corresponding test at maximum long term temperature according to 5.1.3.1a).6.1.1.2 Additional criteria valid for specific tests(e) Sustained load testsThe displacements measured in the tests have to be extrapolated according to Equation (6.14) (Findleyapproach) to 50 years ( tests at normal ambient temperature), or 10 years (tests at maximum long termtemperature), respectively. The trend line according to Equation (6.14) may be constructed with data from notless than the last 20 days (minimum of 20 data points) of the sustained load test. The extrapolateddisplacements shall be less than the mean value of the displacements su,adh in the corresponding reference testsat normal ambient temperature or maximum long term temperature respectively. su,adh is the displacement atNu,adh (loss of adhesion).s(t) = so + a t b (6.14)so = initial displacement under the sustained load at t = 0 (measured directly afterapplying the sustained load)a, b = constants (tuning factors), evaluated by a regression analysis of the deformationsmeasured during the sustained load tests(f) Freeze/thaw testsThe rate of displacement increase shall reduce with increasing number of freeze/thaw cycles to a value almostequal to zero.(g) Effect of installation directionsWhen installed in accordance with the manufacturer’s installation instructions for the direction concerned, thegap between the anchor and the wall of the hole shall be completely filled with mortar and there shall be no lossof bonding material from the hole following anchor setting after cleaning the surface. The embedded part shallnot move significantly during curing time.For tests with overhead installation the conditions in 6.1.1.1a) to 6.1.1.1c) and 6.1.1.1d) with = 0,9 shall befulfilled.6.1.2 Admissible service conditions6.1.2.1 CriteriaCriteria valid for all tension tests(a) Instead of the requirements on the load/displacement curves in Part 1, 6.1.2.1(a) with respect to uncontrolledslip the factor 1 shall be calculated according to Equation (6.12). The minimum value of 1 of all tests isdecisive.If the value 1 is less than 1,0 then the characteristic resistance NRk,p shall be reduced according to 6.1.2.2.1(b).(b) The criteria on the load/displacement behaviour of Part 1, 6.1.2.1(b) apply.(c) In each test series, the coefficient of variation of the ultimate loads shall be smaller than v = 20 %.<strong>ETAG</strong> <strong>001</strong>-5- 24 -

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