BS NA EN 1999-1-2: UK National Annex to Eurocode 9. Design of aluminium structures. Structural fire design

2007·0.85 MB·English

by  British Standards Institution (BSI)

United Kingdom of Great
Britain and Northern Ireland
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BS NA EN 1999-1-2 (2007) (English): UK National
Annex to Eurocode 9. Design of aluminium
structures. Structural fire design
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We will sell to no man, we will not deny or defer to any man either Justice or Right.
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NA to BS EN 1999-1-2:2007
UK National Annex to
Eurocode 9: Design of
aluminium structures -
Part 1-2: Structural fire design
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raising standards worldwide™
NA to BS EN 1999-1-2:2007 NATIONAL ANNEX
Publishing and copyright information
The BSI copyright notice displayed in this document indicates when the
document was last issued,
© BSI2009
ISBN 9780580573460
ICS 13.220.50; 91.010.30; 91,080.10
The following BSI references relate to the work on this national annex:
Committee reference B/525/9
Draft for comment 08/30153319 DC
Publication history
First published January 2009
Amendments issued since publication
Date Text affected
NATIONAL ANNEX NA to BS EN 1999-1-2:2007
National Annex (informative) to
BS EN 1999-1-2:2007, Eurocode 9: Design of
aluminium structures - Part 1-2: Structural
fire design
Introduction
This National Annex has been prepared by BSI Subcommittee, B/525/9,
Structural use of aluminium. In the UK it is to be used in conjunction
with BS EN 1999-1-2:2007, Structural fire design.
NA.1 Scope
This National Annex gives:
a} the UK decisions for the Nationally Determined Parameters
described in the following subclauses of BS EN 1999-1-2-2007:
2.3(1}
2.3(2}
2.4.2(3}
4.2.2.1 (1)
4.2.2.3(5}
4.2.2.4(5}
b} the UK decisions on the status of BS EN 1999-1-2:2007 informative
annexes; and
c} references to non-contradictory complementary information.
NA.2 Nationally Determined Parameters
UK decisions for the Nationally Determined Parameters described in
BS EN 1999-1-2:2007 are given in Table NA.1.
© BSI 2009 • 1
N Table NA.1 UK values for Nationally Determined Parameters described in BS EN 1999-1-2:2007 z
»
•
Subclause Nationally Determined Parameter Eurocode recommendation UK decision .o.-+
@
co
OJ 2.3(1 ) Partial safety factor for mechanical properties = 1.0 Use the recommended value.
~ Vl
N of aluminium for the fire situation m
0 Z
10. 0 2.3(2) Partial safety factor for thermal properties of = 1.0 Use the recommended value. ....:a.
""
aluminium for the fire situation ""
""
2.4.2(3) The values of 'l'fi and ~ Values in EN 1990 for YG, and~; Follow the recommendations of the UK ...I. :a.
'l'2,1 for lJIfi National Annex to BS EN 1990. NI
N
4.2.2.1(1) Classification of cross-sections Cross-sections may be classified as for Use the given rule. o
o
normal temperature design assuming
-......J
the same relative drop in 0.2% proof
strength and modulus of elasticity
4.2.2.3(5) Design resistance of beams Design resistance may be calculated Use the given formulae.
using formulae (4.7), (4.9) and (4.10)
which are based on assuming the same
relative drop in 0.2% proof strength and
modulus of elasticity
4.2.2.4(5) Design resistance of columns Buckling resistance may be calculated Use the given formula.
using formula (4.11) which is based on
assuming the same relative drop in 0.2%
proof strength and modulus of elasticity
z
~
o
z
»
r-
»
z
Z
m
><
NATIONAL ANNEX NA to BS EN 1999-1-2:2007
NA.3 Decisions on the status of informative
annexes
UK decisions on the status of informative annexes in BS EN 1999-1-2:2007
are given in Table NA.2.
Table NA.2 UK decisions on the status of informative annexes in
BS EN 1999-1-2:2007
Annex Description UK decision
AnnexA Properties of alloys and/or tempers May be used
not listed in EN 1999-1-1
Annex B Heat transfer to external structural May be used
aluminium members
NA.4 References to non-contradictory
complementary information
BS EN 1999-1-1:2007 is referenced in BS EN 1999-1-2:2007. The
following references contain non-contradictory complementary
information for use with BS EN 1999-1-1 :2007.
PD 6702-1, Recommendations for the design of aluminium
structures to BS EN 1999
PD 6705-3, Recommendations for the execution of aluminium
structures to BS EN 1090-3
© BSI 2009 • 3
NA to BS EN 1999-1-2:2007 NATIONAL ANNEX
Bibliography
For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including
any amendments) applies.
Standards publications
BS EN 1990:2002, Eurocode Basis of structural design
BS EN 1999-1-1 :2007, Eurocode 9: Design of aluminium structures
Part 1-1: General structural rules
PD 6702-t Recommendations for the design of aluminium
structures to BS EN 19991)
PD 6705-3, Recommendations for the execution of aluminium
structures to BS EN 1090-31)
1} In preparation.
4 • © 8512009

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