Civil MDC

The Behaviour and Design of Steel Structures to EC3 [Fourth edition] N.S. Trahair, M.A. Bradford, D.A. Nethercot, and L. Gardner

This fourth British edition has been directed specifically to the design of steel structures in
accordance with Eurocode 3 Design of Steel Structures. The principal part of this is Part
1-1:General Rules and Rules for Buildings and this is referred to generally in the text as
EC3. Also referred to in the text are Part 1-5: Plated Structural Elements, and Part 1-8:
Design Of Joints, which are referred to as EC3-1-5 and EC3-1-8. EC3 will be accompanied
by NationalAnnexes which will contain any National Determined Parameters for the United
Kingdom which differ from the recommendations given in EC3.
Designers who have previously used BS5950 (which is discussed in the third British
edition of this book) will see a number of significant differences in EC3. One of the more
obvious is the notation. The notation in this book has been changed generally so that it is
consistent with EC3.
Another significant difference is the general absence of tables of values computed from
the basic design equations which might be used to facilitate manual design. Some designers
will want to prepare their own tables, but in some cases, the complexities of the basic
equations are such that computer programs are required for efficient design. This is especially
the case for members under combined compression and bending, which are discussed
in Chapter 7. However, the examples in this book are worked in full and do not rely on such
design aids.
EC3 does not provide approximations for calculating the lateral buckling resistances
of beams, but instead expects the designer to be able to determine the elastic buckling
moment to be used in the design equations. Additional information to assist designers in
this determination has been given in Chapter 6 of this book. EC3 also expects the designer
to be able to determine the elastic buckling loads of compression members. The additional
information given in Chapter 3 has been retained to assist designers in the calculation of
the elastic buckling loads.
EC3 provides elementary rules for the design of members in torsion. These are generalised
and extended in Chapter 10, which contains a general treatment of torsion together
with a number of design aids.

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