EN 12813:2004

1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 General information needed for structural analysis of
  a load bearing tower made in prefabricated components
6 Analysis methods for the design resistance of a tower
  6.1 Cases to be analysed
  6.2 Curve to be established for case 1a
  6.3 Examination methods
  6.4 Detail tests and global tests
7 The result for the calculated and experimental results
  shall be such that no calculated value is greater than
  the corresponding experimental value. Documentation
  relating to the test
8 The test report shall be in accordance with clause 9 of
  EN 12811-3:2002. Documentation to be provided
  8.1 General
  8.2 Information for the user
  8.3 Information for the falsework designer
Annex A (informative) Procedure for analysis by first order
        theory of a fully triangulated load bearing tower
        A.1 Example chosen
        A.2 Determination of the buckling load, F[cr] for one
            face of the tower
        A.3 Structural analysis by first order theory
Annex B (normative) Global test procedure
        B.1 Introduction
        B.2 Apparatus
        B.3 Choice of components
        B.4 Assembly of test tower
        B.5 Test procedure
        B.6 Data to be recorded
        B.7 Additional requirements when a horizontal load
            is also applied

This European Standard describes methods for establishing structural data for stiffness and resistance by calculation supported by tests for load bearing towers made of prefabricated components of steel or aluminium alloy. The vertical load capacity is established, both with or without horizontal loads and with the top restrained or free.This European Standard specifies two methods of analysis, by first order theory, or by second order theory.NOTEFor definitions and requirements relating to structures and materials of the structure, specifications and loads, see EN 12812.The European Standard is not intended for towers constructed with tubes and couplers: it is expected that they will be designed in accordance with EN 12812.