Appendices 
113 
Contrary to the requirement in DIN EN 1993-1 -10/NA [7], the service temperatures T mdr = T md 
+ AT r may be selected from the following table. The value given in line 1 also applies here to 
components where only one side is wetted by water if unobstructed ventilation is not possible 
on the side away from the water (e.g. inside the hollow sections of the foundations). If this is 
not the case, the value in line 3 shall be used in the calculation. 
Line 
Components or sections of the components of the foundations 
Service 
temperature T mdr 
1 
- below lowest astronomical tide (LAT) 
-5 °C 
2 
- above lowest astronomical tide (LAT) 
-15 °C 
3 
- which are permanently wetted by water from one side 
-10 °C 
Table 5-V.1 : Service temperature for components in the EEZ of the North Sea and the Baltic 
For cold-formed circular hollow sections in accordance with DIN EN 10219 [11] where the ratio 
of the inner radius to the wall thickness r/t < 15, the steel grades used should be those for which 
sufficient Charpy impact energy values after strain aging have been verified. This can be done 
by ordering Option 12 for steel grades in accordance with DIN EN 10225. The temperature shift 
for the brittle fracture verification shall be determined using Equation 2.4 in accordance with DIN 
EN 1993-1 -10 [7] and limited to a maximum AT ECf < 20 K because of the cold-forming grade. The 
largest permissible product thicknesses for low reference temperatures T Ed and further informa 
tion can be obtained, where necessary, from the comment to [7] in the Stahlbaukalender (steel 
construction calendar) 2012 (Table 7, p. 375). For ratios r/t > 15, the cold forming for cold-for 
med circular hollow sections may be disregarded in the verification. 
For cold-formed rectangular and square hollow sections, the value of the temperature shift 
brought about by the cold forming which has to be used is AT ECf = 35 K for wall thicknesses t 
< 16 mm or AT ECf = 45 K for wall thicknesses 16 mm < t < 40 mm. The further notes apply si 
milarly to cold-formed circular hollow sections. 
In justified cases, it is possible to deviate from the definition of the test temperatures and 
Chirpy impact energies laid down in DIN EN 1993-1-10, Table 2.1 while retaining the fracture 
toughnesses to be achieved. The fracture mechanics concept for selecting the steel grade as 
per DIN EN 1993-1 -10 allows the equivalent conversion of the test temperatures when adap 
ting the Charpy impact energies to be achieved. 
5-V.3 Additional requirements for multi-axial stress states 
Components which have multi-axial stress states as a result of the production conditions and/ 
or the operational loads require special considerations when selecting the steel. This con 
cerns nodal points between corner posts and diagonal braces in truss constructions, for ex 
ample.