When the latticed towers manufacturer is located in Europe and the Project is in America, and Bid documents from the Investor/Owner gave the option to use European standards.
One of the critical factors to consider is the steel material to be used. ASTM A572 establish clear requirements that might not be precisely the same as UNE EN 10025.
EN 10025:2004 is the new European standard for structural steel that replaces previous EN 10025:1993.
Currently EN 10025 is published in six parts:
EN 10025-1: General technical delivery conditions.
EN 10025-2: Technical delivery conditions for non-alloy structural steels.
EN 10025-3: Technical delivery conditions for normalised/normalised rolled weldable fine grain structural steels
EN 10025-4: Technical delivery conditions for thermomechanically rolled weldable fine grain structural steels.
EN 10025-5: Technical delivery conditions for structural steels with improved atmospheric corrosion
resistance - also known as weathering steels.
EN 10025-6: Technical delivery conditions for flat products of high yield strength structural steels in the quenched and tempered condition.
Where EN 10025-2 is of our interest.
-CASE:
Is S275JR of EN 10025-2 in compliance of tower strength requirements comparing to ASTM572?.
-PROCEDURE:
Model and run tower analysis using EN 10025-2 material properties.
*230kV Tower, Double circuit, single bundle, 1024.5 kcmil ACAR conductor, 1OPGW, 1 7#8 alumoweld shieldwires
-CONCLUSION:
Model is in strength compliance.
