CASSETTE SPImplementation guide

PMA by ArvalZA du Pays de Podensac33720 CERONS - France

Tel. +33 (0)5.57.98.14.50Fax. +33 (0)5.57.98.14.60

commercial@pma.frwww.pma.fr

Published on 21 August 2007

PRESENTATION OF THE SYSTEM

The SP cassette system is an offset siding with a sheet of ventilated air based on metal cassettes with a plane appearance and hidden attachments. These cassettes can be installed with hollow horizontal and/or vertical joints from 0 to 20 mm.

The cassettes are attached to an adjustable and adjusted frame, by their upper edges and fixed into the lower cassettes on the lower edge (technical drawings – fig. 4 & 5)This process enables sidings to be implemented on new or refurbished works: public or private, industrial, commercial or lodging buildings.

SP cassettes are square or rectangular folded metal plate panels the dimensions of which are chosen by the contractor within the limits set out below (technical drawings – fig. 1 and 2)

TECHNICAL FEATURES

Height (mm) Length (mm)

Steel 1000 3000*

2000 1000

Aluminium alloy 1000 3000*

1500 1000

*Cassettes with one or two intermediate supports depending on the resistance required.(technical drawings – fig. 8 & 9 and 27 & 28)

MATERIALS

Thck(mm) Grade Standard Protection Standard

Steel 1.5 S320 GD + Z 225 NF EN 10326P 34310

Precoated as per ARVAL colorissime XP P34301

Post-coated polyester dusting P 24351

Stainless steel 1.5 1.43011.4404 NF EN 10088-2

Aluminium 23005 H443103 H44 NF A 50-452

Pre-coatingPost-coated polyester

dusting

NF A 50-452

NF P 24-351

PMA should be consulted on the feasibility of various colors and surface appearances.

In the event of special requirements, in particular esthetic requirements, the visible side of the SP cassettes can be rigidified by adhesion over the entire back side of a compound made up of a rigid core (extruded polystyrene, polypropylene honeycomb or rockwool) and a galvanized steel plate with a thickness of 0.5 mm.

IMPLEMENTATION

The SP cassettes system does not participate in the general stability of the building. There are no wind bracing or frame anti-buckling functions, nor functions to resist security shocks, all of which must be provided by the support structure.

SP cassettes are intended to be installed on an adjusted subframe allowing a ventilated sheet of air between the cassettes and the support wall or thermal insulation. This frame must satisfy the requirements of C.S.T.B. book no. 3194 January-February 2000 – "General conditions of design and implementation of the metal frame and thermal insulation of offset siding.” In particular the frame deflection criterion is 1/200ths of the span bearing a normal wind load by virtue of the Wind Rules in force. (technical drawings – fig.3)

CASSETTES SUPPORT FRAME

The frame comprises vertical risers made from galvanized steel with a thickness of 2 mm.

The frame is an omega profile with dimensions of 40 x (50 + hollow joint) with flanges of 50 mm (cassette attachment area). Maximum length 6000 mm.The link between the omega profile and the supporting structure is made either by angle beams along the omega (solution chosen for an installation on metal plates), or by corner legs over the length of the profile (installation on a wall).

In both cases the distribution of attachments between angle beams or corner legs must meet the requirements of C.S.T.B. book no. 3194 January-February 2000 (see Implementation chapter of this guide).This supporting profile is made integral with the support wall by attachment to the supporting wall by metal plugs adapted to the charges to be borne (own weight and wind).

The spread between frames, SP cassette supports, depends on the actions of the wind in terms of pressure and vacuum defined by virtue of the Wind Rules in force.

The length of the cassettes installed on 2 supports is limited to:- 2000 mm for steel cassettes- 1500 mm for aluminium cassettes-

Beyond these dimensions an intermediate support is necessary.

Hollow joint

The intermediate support is made up of a double reverse angle or a U section fixed to the supporting structure by angle beams or corner legs, offering a support width for the cassette of 60 mm minimum (see fig. page 17 ). It is then necessary to attach the cassette to the frame at the level of this support using two self-drilling screws at a minimum distance of 20 mm.

ATTACHMENT

SP cassettes are fixed to the adjustable support frame, the upper part of which is adjusted with two self-drilling screws with a minimum diameter of 5.5 mm or self-threading screws with a minimum diameter of 6.3 mm.

These attachments must have a flange ring or grommet with a minimum diameter of 15 mm for steel cassettes and 16 mm for aluminium alloy cassettes.Furthermore, they must, with the support, provide an assembly with a minimum characteristic detachment strength of 300 daN.

Intermediate frame

Self-drilling screw Ø 5,5 mm

FINISHING ELEMENTS

The finishing elements presented are given as non restrictive examples only. These are only implementation principles, any other solutions can be considered and studied by the installation company in compliance with the specific features of the product.

Vertical joint (technical drawings – fig. 6 & 7) Siding foot (technical drawings – fig. 10 to 14) Cap (technical drawings – fig. 15 & 16) Acroterion (technical drawings – fig. 17 & 18) Folded angle (technical drawings – fig. 19 to 21) Opening facing (technical drawings – fig. 22 to 26)

ORGANIZATION

PMA is the product manufacturer and does not install the product. The cassettes are to be installed by contractors having the required professional qualifications.Design and studies prior to executing the facade are not incumbent on the maker PMA nor on the distributor companies. On request, PMA can provide technical assistance

PACKING, TRANSPORT AND UPKEEP

A delivery invoice is glued to each package stating:

Customer order reference. Batch reference. Customer name. Product type.

Facing thickness. Bundle content (number and length). Colour reference of pre-coated

products.

The weight of a bundle may in no case exceed 2.5 tons.

The SP cassettes and their accessories are to be transported under conditions that preserve the integrity of the characteristics of the products (shimmed up packages, carefully stacked and strapped, tarpaulin-covered trucks).

The removable protective film covering the cassettes must be removed within 15 days after shipping.

Metallic facades have to be normally maintained in accordance with the prescriptions of the Professional Rules for Metallic Siding (article 4-2-91 exterior maintenance).

DRAWINGS AND DETAIL PRINCIPLES

The drawings below are examples of treatment of particular points when installing SP cassettes for siding. Any other solutions can be considered and studied by the installation company in compliance with the specific features of the product.

Get in touch with us for any further information you may require.

IMPORTANT

The content of this document is based on data relative to construction and to materials properties. It is designed to assist PMA customers in implementing its products. Based on the construction processes and methods known at the time of its publication, this Implementation Guide cannot be considered final and may be revised and/or modified at any time.In case of doubt or difficulty, the user is asked to consult PMA before continuing his project.

TECHNICAL DRAWINGS

fig.1

SP Cassette profile

Single span SP Cassette

fig.2

Profile viewFront elevation

Section A-A

Hei

ght

Hei

ght

Hei

ght

LengthHJ : Hollow joint30 mm max

HJ

Top view

Hei

ght

Length

fig.3

Principle of assembly of Single span SP cassette

Section B-B

Section A-A

Metal frame Metal frames

Hollow joint

Hollow joint

Metal frames

Horizontal connection detail

fig.4

fig.5

Horizontal connection vertical section

HJ

HJ : horizontal Hollow jJoint from 0 to 20

fig.6

fig.7

Horizontal section on vertical joint

Vertical joint principle

Hollow joint up to 20 mm

fig.8

Cassette on offset siding on wall

fig.9

Cassette in double skin siding

Cap

Angle beam

Draining omega

Insulation

Initial cassetteSelf-drilling screw Ø5,5 mm

Current cassette

Cap Draining omega

Angle beam

Insulation

Current cassette

Initial cassette Siding plate

fig.10

Double skin siding foot

fig.11

fig.12

Siding foot – front elevation

Siding foot – vertical section

40

Hol

low

join

t

X and Y as requestedY>50mm

Section A-A

fig.13

Offset siding foot

fig.14

Offset siding foot - vertical section

Ventilation perforation

Section A-A

fig.15 fig.16

Double skin siding cap Double skin siding capCoupe verticale

fig.17 fig.18

Ventilated acroterion crown Ventilated acroterion crownVertical section

X, Y, Z at requestMaximal length 6000 mm

Support attachment

fig.19

Folded angle – double skin siding

fig.20

Folded angle –horizontal section

HJ

X, Y at request

fig.21

Folded angle – offset siding on wall

fig.22

1. Lintel2. Support

piece3. Table4. Support5. SP

Cassette

Principle of the facing of an opening

fig.23

Detail of window facing parts

fig.24

Vertical section on lintel (example)

Subframe

Perforation for draining and ventilationPin

fig.25

Vertical section on support (example)

fig.26

Offset cassette profile on double span

Hollow joint from o to 20 mm

Hei

ght

Length

Subframe

Vertical section on jamb (example)

fig.28

fig.27

Offset façade – Double span cassette

Pin

Current cassette

Adjusted subframe