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Hence the minimum resistance is Rm min = min(Rm , Rm ' Rm j = 220 kN and m the mean is R

m,mean

Final design of working anchorages Design Approach 1

Material properties and resistance

The characteristic resistance of the anchorage can be re-calculated from the suitability tests as:

m,mean

^a,mean

m,min

and hence the characteristic resistance of the anchorage is:

Ra,k = min (Rak,mean' Rak,min) = 203kN and its design resistance is:

184.6 kN according to EN 1997-1, or

Ra,d,EN1537

Ra,k yr

150.4 kN according to EN 1537

Verification of strength

Degree of utilization is

Degree of utilization is to EN 1997-1

to EN 1997-1

Degree of utilization is

Degree of utilization is

to EN 1537

The design is unacceptable if the degree of utilization is > 100%

to EN 1537

The design is unacceptable if the degree of utilization is > 100%

Lock-off and proof loads for acceptance tests (Test Method 2) Select the same lock-off load as before, i.e. Po = 150 kN

The proof load in acceptance tests must not exceed 0.9 x Pt0 1k = 229.7 kN

The proof load must not be less than 1.25P0 = 187.5kN

However, it is better to limit the proof load to the smaller of s .8 kNĀ©

1.25P0 = 187.5kN and 1.15Rd SLS: Select a proof Pp = 187.5kN

Provided each anchorage performs satisfactorily up to the proof load, the anchorage is deemed to meet the requirements of Eurocode 7

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