md panels - ArcelorMittal

MD PANELS
Specification book
Edition: April 2011
ArcelorMittal Construction International
Industriestrasse 19
8112 Otelfingen / Zürich
Switzerland
www.arcelormittal.com/arval
PRESENTATION OF THE SYSTEM
The MD shell system includes:
ƒ
ƒ
ƒ
ƒ
Facings made of pre-coated galvanised steel sheet, stainless steel sheet, or
aluminium alloy sheet attached on notches on vertical bearing rails by means of
adjustable sliding stirrups.
Specific extruded aluminium alloy bearing rails (technical diagrams – fig. 4 & 6)
Sliding stirrups on the MD rail. (technical diagrams - fig. 5 & 6)
A set of accessories obtained by folding enables to work on specific points (eaves,
cladding base, lead strips, angles, openings...).
The MD shell system can be used on new façades or façades undergoing renovation
work, public and private buildings, industrial facilities, shopping malls or residences.
TECHNICAL SPECIFICATIONS
ƒ
ƒ
Manufactured by folding. (technical diagrams - fig. 1 to 3)
The manufacturing dimensions (height and width) can vary depending on the
material used and its thickness.
Galvanised steel cassettes
Aluminium alloy cassettes
Height (mm)
Width (mm)
Height (mm)
Width (mm)
100 to 1100
100 to 3000
100 to 1370
100 to 3000
100 to 3000
100 to 1100
100 to 3000
100 to 1370
NOTE: The product complies with the “ Professional regulations governing the
manufacturing and implementation of metal cladding” and can be used for the
construction of type XIII and type XIV walls.
MATERIALS
Grade
Steel
Stainless
steel
Aluminum
alloy
Thickness
(mm)
1 to 2
1 to 2
1.5 to 2
2 to 3
Grade
S320 GD + Z
225
1.4301
1.4404
3003
1050 H24
5005 H24
Standard
Protection
EN 10326
P 34310
Pre-coated
according to
colorissime ARVAL
Post coating with
polyester
powdering
Standard
XP P34301
P 24351
EN 10088-2
NF A 50-451
NF A 50-451
Pre-coated
POLYESTER post
coated
The various colours and surface finishes are to be submitted to AMC so as to verify
feasibility: Possibility in copper, Zinc, enamelled steel..., subject to AMC approval and
validation through testing.
NF P 34-601
NF P 24-351
NOTE: The sheet thickness depends on the dimensions of the cassettes and technical
criteria. In the case of specific requirements, in terms of aesthetics for example, the
visible face of MD cassettes can be rendered more rigid by fixing onto the back face a
system comprising a rigid core (extruded polystyrene, honey comb polypropylene or
mineral wool) and 0.5 mm-thick galvanised steel sheets.
FINISHES
The finishes are obtained from the same sheets (same thickness, same material
quality) as the cassettes, with a maximum length of 6.00 meters.
ƒ
ƒ
ƒ
ƒ
ƒ
Eave crown. (technical diagrams - fig. 13 to 15)
Strips. (technical diagrams - fig. 10)
Bay frames
Outgoing cassettes (technical diagrams – fig.9)
Straight angle (technical diagrams – fig.16 to 18)
IMPLEMENTATION
The fixings on the rails for major projects are not provided by AMC and must comply
with the provisions set forth in the CSTB n° 3194 January - February 2000.
The main design is that of a decorative cladding in front of a supporting wall. The
supporting wall must have all adequate resistance and façade stability properties, and
comply with applicable norms governing air-tightness (technical diagrams - fig. 7 & 8)
In case of use with metal plates, the type XIV "wall" principles are to be followed.
As far as wind resistance is concerned, the following table provides the acceptable
wind loads depending on spans, dimensions, and the MD shell materials in terms of
stresses due to normal wind conditions. (technical diagrams - fig. 12)
For cassette widths exceeding 2040 mm, a vertical intermediate frame at centre
distance is required.
Table to be used to calculate the normal wind loads that can be withstood by
MD SHELLS
HEIGHT
(meters)
H
WIDTH
(meters)
L
Metal base
Suction under normal
wind (daN/m²)
270 daN/m² maximum
Pressure under wind
Normal (daN/m²)
270 daN/m² maximum
1,0
97,4
HxL
97,4
HxL
1,5
184,5
HxL
344-23,4 x H
H x L²
2,0
1,5
Same
70,9
HxL
Same
70,9
HxL
2,0
96,7
HxL
127,6
HxL
136,4
HxL
127,6
HxL
3,0
145,8
HxL
145,8
HxL
1,5
184,5
HxL
344-23,4 x H
H x L²
2,0
Same
136,3-2,8 x L
H x L²
Same
305.7-95.5 x L
H x L²
2,5
224-27 x L
H x L²
152,8+10,2 x L
H x L²
3,0
220.6-15.2 x L
H x L²
124,2+55,1 x L
H x L²
Steel
2,0
191
HxL
191
HxL
Aluminum
alloy
3,0
145,8
HxL
56,8
H
1,0
97,4
HxL
97,4
HxL
1,5
184,5
HxL
178+97,7 x H
H x L²
Same
70,9
HxL
Same
70,9
HxL
2,0
96,7
HxL
127,6
HxL
2,5
136,4
HxL
127,6
HxL
3,0
145,8
HxL
145,8
HxL
Nature
Thickness
In mm
Steel
Up to 1.37
Aluminum
alloy
Up to 1.37
With 4
notches
Steel
From 1.37 to
2.04
From
2,04
to
3,00
2,0
Aluminum
alloy
Steel
From 1.37
to 3.00
with
6 or 8
notches*
2,5
2,0
1,5
Up to 1.37
Aluminum
alloy
*
cassettes with four notches for a maximum cassette height of 1370 mm, 6 notches for
a maximum height of 2500 mm and 8 notches for a greater heights.
PACKAGING AND TRANSPORT
A delivery note is appended to each parcel and details the following:
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
Customer order reference,
Batch reference,
Name of the customer
Type of product
Thickness of the facing
Content of the package (amount and length)
Colour reference of pre-coated sheets.
The weight of the package can not exceed 2.5 tons.
MD SHELLS and their accessories are to be transported in a manner that ensures their
integrity (wedged parcels, carefully bunched and strapped down, closed trucks).
ORGANIZATION
The AMC company is a product manufacturer and does not carry out installation
operations.
The implementation of MD SHELLS must be performed by professional companies
that are qualified to carry out these operations.
The design and preliminary studies prior to the building of the façade are neither the
responsibility of AMC nor of its distributors. Upon request, AMC can provide technical
assistance.
This guide does not aim to provide all the details of the implementation process, but to
give the main technical specificities and properties of the panels. In order to provide
some assistance with the façades, some design suggestions concerning particular
points and finishes are appended to the guide.
HANDLING, STORAGE AND MAINTENANCE
The handling operations are to be carried out with the product specificities taken into
account. They're to be handled vertically.
They are to be stored on flat surfaces, with the parcels slightly inclined longitudinally,
and care must be taken so that not more than two parcels overlap.
The storage time on the construction site must be limited to the minimum necessary.
One crucial precaution consists in preventing water infiltrating, by dripping or
condensation, between the panels.
They are to be sheltered from direct sunlight. The protection film on the visible faces of
pre-coated panels must be peeled off within 15 days.
The metal façades are to undergo normal maintenance operations, as per provisions
set forth in the Professional Regulations Governing Metal Cladding (article 4-2-91,
outdoor maintenance).
Although the surface is naturally cleaned by rain water, it can also be cleaned regularly
with detergent-free household cleaning products, with no solvent nor abrasive agents,
followed by clear water rinsing.
Maintenance operations include:
ƒ removal of vegetation (for example moss) and any other foreign items that have
been deposited on the facing's surface.
ƒ Repairs to localised damages as soon as these are identified, such as corrosion
points caused by exterior actions and damages for example.
The MD shells system has its own statement of scope which was approved
following a technical survey conducted by SOCOTEC, available on request from
AMC.
Please contact us for any additional information.
IMPORTANT
The content of this document is based on data relating to construction and material
properties. It's designed to help AMC customers use our products.œ Based on
procedures and construction methods that were known at the moment of the
publication, this Implementation GuideΠshould not be considered as the final version
and can be reviewed and/or amended at any moment.
In case of doubt or difficulties, the user should contact AMC before proceeding with the
project.
TECHNICAL DIAGRAMS
MD Shell - Front view and profile view
The X1 and X2 dimensions may vary. Dimension
A varies by 43 to 70 mm depending on the value
of the horizontal hollow seal.
fig.1
MD shell - horizontal crosssection
fig.2
Dimension X3 may vary.
Vertical cross-section - Detail of the
horizontal seal
fig.3
Vertical cross-section on
MD rail
fig.4
Vertical cross-section sliding stirrup
fig.5
Principles governing assembly of cassettes on rails
and stirrups
fig.6
Installation principles for MD shells on decorative
cladding
fig.7
Installation principles for MD shells on double-skin
cladding
fig.8
Exit cassette detail
fig.9
Double skin cladding base strip
fig.10
Fixing details - vertical crosssection
fig.12
Double skin cladding acroterium cassette
(+ splinting)
fig.13
Acroterium cassette crosssection
fig.14
Decorative cladding acroterium cassette
fig.15
Straight angle - Double skin façade
fig.16
Angle cassette in one piece
fig.17
Straight angle - Decorative façade
fig.18