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WB9423_BSI_StandardColCov_noK_AW:BSI FRONT COVERS 5/9/08 12:55 Page 1

UK National Annex to

Eurocode 9: Design of

aluminium structures –

Part 1-4: Cold-formed structural sheeting

NA to BS EN 1999-1-4:2007

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NA to BS EN 1999-1-4:2007

NAtioNAl ANNEx

Publishing and copyright information

the BSi copyright notice displayed in this document indicates when the
document was last issued.

© BSi 2009

iSBN 978 0 580 57350 7

iCS 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 08/30153335 DC

Publication history

First published January 2009

Amendments issued since publication

Date

Text affected

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NAtioNAl ANNEx

© BSI 2009 •

1

NA to BS EN 1999-1-4:2007

National Annex (informative) to

BS EN 1999-1-4:2007, Eurocode 9: Design

of aluminium structures – Part 1-4:

Cold-formed structural sheeting

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 1999-1-4:2007, Cold-formed structural sheeting.

NA.1 Scope

this National Annex gives:

the UK decisions for the Nationally Determined Parameters

a)

described in the following subclauses of BS EN 1999-1-4-2007:

2

—

(3)

2

—

(4)

2

—

(5)

3.1

—

(3)

7.3

—

(3)

A.1

—

(1)

A.3.4

—

(3)

the UK decisions on the status of BS EN 1999-1-4:2007 informative

b)

annexes; and

references to non-contradictory complementary information.

c)

NA.2 Nationally Determined Parameters

UK decisions for the Nationally Determined Parameters described in
BS EN 1999-1-4:2007 are given in table NA.1.

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NA to BS EN 1999-1-4:2007

2

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NAtioNAl ANNEx

table

NA.1

UK

values

for

Nationally

Determined

Parameters

described

in

BS

EN

1999-1-4:2007

Subclause

Nationally

Determined

Parameter

Eur

ocode

recommendation

UK

decision

2(3)

Numerical

values

for

c

Mi

For

buildings:

c

M1

=

1,10

c

M2

=

1,25

c

M3

=

1,25

Use

the

recommended

values.

2(4)

Numerical

value

for

c

M,Ser

For

buildings:

c

M,Ser

=

1,00

Use

the

recommended

value.

2(5)

R

u

le

s

fo

r

th

e

u

se

o

f

St

ru

ct

u

ra

l C

la

ss

es

a

n

d

connection

to

Consequence

Classes

in

EN

1990

[None]

No

data

are

currently

available.

3.1

(3)

Use

of

other

aluminium

materials

and

products

[None]

No

data

are

currently

available.

7.3

(3)

limits

on

deflections

[None]

No

data

are

currently

available.

A.1

(1)

Conversion

factors

for

test

results

[None]

No

data

are

currently

available.

A.3.4

(3)

Numerical

values

for

c

M

and

c

sys

c

M

m

ay

b

e

ca

lc

u

la

te

d

u

si

n

g

s

ta

ti

st

ic

al

m

et

h

o

d

s

as

given

in

EN

1990,

or

design

values

from

Section

2;

c

sys

=

1,00

in

the

case

of

sheeting

Use

the

recommended

values.

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NAtioNAl ANNEx

© BSI 2009 •

3

NA to BS EN 1999-1-4:2007

NA.3 Decisions on the status of informative

annexes

UK decisions on the status of informative annexes in BS EN 1999-1-4:2007
are given in table NA.2.

table NA.2 UK decisions on the status of informative annexes in

BS EN 1999-1-4:2007

Annex

Description

UK decision

Annex B

Durability of fasteners

May be used

NA.4 References to non-contradictory

complementary information

BS EN 1999-1-1:2007 is referenced in BS EN 1999-1-4:2007. 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

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NA to BS EN 1999-1-4:2007

4

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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 6702-1, Recommendations for the design of aluminium
structures to BS EN 1999

1)

PD 6705-3, Recommendations for the execution of aluminium
structures to BS EN 1090-3

1)

1)

in preparation.

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