VENTILATED FAÇADE - Norfloor · VENTILATED FAÇADE COUPLING TYPOLOGIES 4 Exposed coupling system 4...

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TECHNICAL MANUAL VENTILATED FAÇADE IMOLA TECNICA

Transcript of VENTILATED FAÇADE - Norfloor · VENTILATED FAÇADE COUPLING TYPOLOGIES 4 Exposed coupling system 4...

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1 VENTILATED FAÇADEIMOLA TECNICATECHNICAL MANUAL

VENTILATED FAÇADE IMOLA TECNICA

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SYSTEM COMPONENTS 3

VENTILATED FAÇADE COUPLING TYPOLOGIES 4

Exposed coupling system 4

Concealed coupling system 4

STANDARD DISTANCES OF FAÇADE SYSTEMS 5

Distance for system with exposed coupling 5

Distance for system with concealed coupling 5

LOAD BEARING STRUCTURES 5

CHARACTERISTICS AND TYPOLOGIES OF LOAD BEARING STRUCTURES 6

Load bearing structure type IT-KL - with exposed coupling 6

Load bearing structure type IT-M - with exposed coupling 8

Load bearing structure type IT-Q - with exposed coupling 10

Load bearing structure type IT-S - with concealed coupling 12

Load bearing structure type IT-SR - with concealed coupling 14

Load bearing structure type IT-GE - with concealed coupling 16

DESIGN 19

Architectural drawing 19

Structural drawing 19

Slab chart 19

Static test report 19

Example of architectural drawing 20

Example of structural drawing 20

Example of structural drawing 21

Example of structural drawing details 22

LAYING THE VENTILATED FACADE 23

Bom of system to be laid 23

Tracing the grid 24

Mounting the brackets 24

Mounting the upright profiles 25

Mounting the insulating panel 26

Mounting the cladding slabs 26

TECHNICAL DETAILS 29

CONTENTS

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SYSTEM COMPONENTS

A. Masonry support layerB. Insulation layerC. Ventilation layerD. Load bearing structureE. External facing (or cladding)

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EXPOSED COUPLING SYSTEM Coupling system with clips:carried out with fixing clips connected to the load bearing structure and positioned at every intersection of the cladding slabs, supporting the cladding slabs.

CONCEALED COUPLINGKeil type coupling system:carried out by means of a work process on the back of the slabs consisting of a special trunca-ted-cone, non-through hole and the subsequent insertion of a special KEIL type anchoring to which the cramps are fixed that couple cladding and substructure.

One of the main differences distinguishing ventilated façades is the type of coupling used to fix the cladding (porcelaini-zed Grès slabs, full body or glaze). The coupling is known in jargon as exposed or concealed. The specific techniques are illustrated below:

VENTILATED FAÇADE COUPLING TYPOLOGIES

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DISTANCE FOR EXPOSED COUPLING SYSTEM For the exposed coupling system, variation is from a minimum of 110 mm to a maximum of 150 mm.

DISTANCE FOR CONCEALED COUPLING SYSTEMFor the concealed coupling system, variation is from a minimum of 130 mm to a maximum of 160 mm.

The structure consists of profiles and brackets in extruded aluminium alloy 6063-T6 corresponding to standards UNI EN 1090 3-:2008 and DIN 18516, with a minimum thickness of 2 mm as explicitly demanded by the same standards. The structure is bonded to the support with special devices suitable for absorbing heat expansion/shrinking and small move-ments of the support without the cladding suffering from induced stresses.Safety of the whole system must be guaranteed through a case by case verification on the basis of the following regula-tions in force:• EUROCODE 1 ( UNI EN 1991-1-1:2004), DIN 1055 (loads on structures); • UNI 11018-2003 (design of ventilated façades); • UNI EN 1090-3:2008, UNI EN 1999-1-1:2007 – EUROCODE 9, (design and calculation for aluminium structures);• UNI EN 1993-1-4:2007 – EUROCODE 3 (calculation and testing for stainless steel structures).

STANDARD DISTANCES OF FAÇADE SYSTEMS

LOAD BEARING STRUCTURES

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LOAD BEARING STRUCTURE TYPE IT-KL - WITH EXPOSED COUPLING

CHARACTERISTICS AND TYPOLOGIES OF LOAD BEARING STRUCTURES

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DESCRIPTION OF THE SYSTEMFixing on existing support of L-section brackets by means of plugs suitably sized and adapted to the type of support.Fixing of T-section profiles to the brackets by means of rivets, with “fixed point” and “sliding point” as per the executive design.Fixing of special plate in pre-painted STAINLESS steel complete with clips in STAINLESS steel AISI 316 for fixing the cladding slabs.The clips may be of a colour similar to the cladding.The plate is complete with gaskets in EPDM with anti-vibration function for the cladding.The system thus composed has a gap between the cladding slabs of 8 mm.

BOM OF THE SYSTEMFeaturing exposed coupling of the cladding, the system consists of:• Uprights: T-section (black, anodised); • Brackets: L-section anchorage complete with prefixing holding spring; • Plugs: anchorage suitable for the support;• Rivets: normalised for fixing uprights to brackets; • Rivets: normalised for fixing plates to uprights;• Plate: in STAINLESS steel complete with coloured clips and gaskets.

Detail: AXONOMETRY

Detail: HORIZONTAL SECTION

Detail: VERTICAL SECTION

Detail: EXPLODED

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LOAD BEARING STRUCTURE TYPE IT-M - WITH EXPOSED COUPLING

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DESCRIPTION OF THE SYSTEMFixing on existing support of L-section brackets by means of plugs suitably sized and adapted to the type of support.Fixing of special section profiles to the brackets by means of rivets, with “fixed point” and “sliding point” as per the exe-cutive design.In the upright profile there are grooves for housing self-positioning spacers and clips in STAINLESS steel AISI 316 for fixing the cladding slabs. For slabs in format 120x60 cm laid horizontally an intermediate upright is envisaged with related fixing clips.The clips may be of a colour similar to the cladding.The system is complete with gaskets in EPDM with anti-vibration function.The system thus composed may have a gap between the cladding slabs of 4 or 8 mm.

BOM OF THE SYSTEMFeaturing exposed coupling of the cladding, the system consists of:• Uprights: T-section (with possibility of black anodization); • Brackets: L-section anchorage complete with prefixing holding spring; • Plugs: anchorage suitable for the support;• Rivets: normalised for fixing uprights to brackets;• Rivets: normalised for fixing clips to uprights;• Clips: coloured, in STAINLESS steel AISI 316;• Spacers: 4/8 mm;• Gaskets: anti-vibration.

Detail: AXONOMETRY

Detail: HORIZONTAL SECTION

Detail: VERTICAL SECTION

Detail: EXPLODED

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LOAD BEARING STRUCTURE TYPE IT-Q - WITH EXPOSED COUPLING

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DESCRIPTION OF THE SYSTEMFixing on existing support of U-section brackets by means of plugs suitably sized and adapted to the type of support.Fixing of special “Ω-omega” section profile to the brackets by means of rivets, with “fixed point” and “sliding point” as per the executive design.In the upright profile there are grooves for housing self-positioning spacers and clips in STAINLESS steel AISI 316 for fixing the cladding slabs.The system is complete with gaskets in EPDM with anti-vibration function.The system thus composed may have a gap between the cladding slabs of 4 or 8 mm.

BOM OF THE SYSTEMFeaturing exposed coupling of the cladding, the system consists of:• Uprights: “Ω-omega” section (with possibility of black anodization); • Brackets: U-section anchorage; • Plugs: anchorage suitable for the support;• Rivets: normalised for fixing uprights to brackets;• Rivets: normalised for fixing clips to uprights;• Clips: coloured, in STAINLESS steel AISI 316;• Spacers: 4/8 mm;• Gaskets: anti-vibration.

Detail: AXONOMETRY

Detail: HORIZONTAL SECTION

Detail: VERTICAL SECTION

Detail: EXPLODED

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LOAD BEARING STRUCTURE TYPE IT-S – WITH CONCEALED COUPLING

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DESCRIPTION OF THE SYSTEMFixing on existing support of L-section brackets by means of plugs suitably sized and adapted to the type of support.Fixing of T-section upright profile to the brackets by means of rivets, with “fixed point” and “sliding point” as per the executive design.Riveting on upright profiles of slotted horizontal stringer profiles, shaped in such a way that stresses due to the action of the wind will be axial to the cramps.Application on cladding slabs of anchoring cramps in aluminium by means of special expansion plug in STAINLESS steel (see KEIL).Laying of the slabs thus assembled on the slotted horizontal stringers.By means of millimetric adjustment screws the system offers the possibility of variable gaps.

BOM OF THE SYSTEMFeaturing concealed coupling of the cladding, the system consists of:• Uprights: T-section; • Brackets: L-section anchorage complete with prefixing spring; • Plugs: anchorage suitable for the support;• Rivets: normalised for fixing uprights to brackets;• Stringers: horizontal, slotted, in special section to accommodate by anti-flip-over interlock the cramps applied on the back of the cladding; • Rivets: normalised for fixing stringers to uprights;• Cramps: anchoring, millimetric adjustment with locking and adjustment screw;• Cramps: simple anchoring type;• Gaskets: in neoprene to apply between anchoring cramp and cladding slab.

Detail: AXONOMETRY

Detail: HORIZONTAL SECTION

Detail: VERTICAL SECTION

Detail: EXPLODED

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LOAD BEARING STRUCTURE TYPE IT-SR - WITH CONCEALED COUPLING

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DESCRIPTION OF THE SYSTEMFixing on existing support of U-section brackets in aluminium alloy by a system of tangential adjustment through rotation and alignment of the box-section upright.Fixing of box-section profile to the brackets by means of round headed rivets, with “fixed point” and “sliding point” as per the executive design.In the upright profile there are grooves for housing self-positioning spacers and clips in STAINLESS steel AISI 316 for fixing the cladding slabs.Fixing by rivets on upright profiles of the slotted horizontal stringers, shaped in such a way that stresses due to the action of the wind will be axial to the cramps.Application of anchoring cramps in aluminium with special expansion plug in STAINLESS steel which is inserted into the truncated-cone hole on the back of the slabs or panels.Laying of the slabs thus assembled on the slotted horizontal stringers.With millimetric adjustment screws, the system provides for obtaining variable gaps.The slabs are blocked from sideways sliding by a removable locking system.

BOM OF THE SYSTEMFeaturing concealed coupling of the cladding, the system consists of:• Uprights: box-section in aluminium alloy; • Brackets: U-section anchorage in aluminium alloy; • Plugs: anchorage suitable for the support;• Rivets: normalised for fixing uprights to brackets;• Stringers: horizontal, slotted, aluminium alloy in special section to accommodate by anti-flip-over interlock the cramps applied on the back of the cladding; • Rivets: normalised for fixing stringers to uprights;• Cramps: anchoring, millimetric adjustment with locking and adjustment screw;• Cramps: simple anchoring type;• Gaskets: in neoprene to apply between anchoring cramp and cladding slab.

Detail: AXONOMETRY

Detail: HORIZONTAL SECTION

Detail: VERTICAL SECTION

Detail: EXPLODED

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LOAD BEARING STRUCTURE TYPE IT-GE - WITH CONCEALED COUPLING

DESCRIPTION OF THE SYSTEM The system consists of:- anchorage to the wall;- substructure formed by profiles in aluminium EN AW- 6060 worked and pre-assembled with the cladding slabs, consisting of:

- three-lobed interlocking plugs;- housing guide.

ANCHORAGE TO THE WALLThis is a certificated anchorage specially de-signed for ventilated façades. It responds bril-liantly to the needs of application on any filler support, including low consistency ones such as gas beton block or holed bricks, even without rendering. Certificated resistance is around 230 Kg for each anchorage. So it’s really easy for the designer to set even differentiated resistances. For example, to combat wind stresses, which are notoriously accentuated on the high peri-pheries of the clad elevation, anchorages can be added that satisfy the severest requirements of admissible load.

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ANCHORAGE OF THE SUBSTRUCTURE TO THE SLAB The slabs chosen by the designer are prepared, i.e. equipped with slotted holes and ellipsoid undercuts to house the bayonet insert. Rota-tion of the insert by 90° locks the element in the slab. The three-lobed self-tapping screw fixes the aluminium substructure to the slab, without the latter being stressed by expansion of various kinds. The elastic structural adhesive reconstructs the hole and during the tightening phase flows into special channels on the profile support surface. After polymerisation an elastic diaphragm is created which gives the finished piece high resistance and compatibility of the various assembled elements.

MANAGEMENT OF DIFFERENT FORMATSThe substructure is designed and manufactu-red industrially and in a subsequent production phase is pre-assembled with the cladding slab which may be of any format. Through the use of sophisticated software, mathematical models can be devised for the creation of pre-assem-bled slabs of different format and reciprocally compatible. So a guided laying can be created, e.g.: 30x60 slabs coupled with 60x120 slabs po-sitioned vertically or horizontally. The designer also has the faculty of positioning the lay while the work is under way.

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ADJUSTMENT ON FOUR MAIN AXES DURING LAYINGThe full range of adjustments on four main axes means great flexibility during laying. The size of the ventilated chamber can be varied more than 20 cm while work is underway. For example, if you want to exploit the ventilation chamber as a technical space for housing plant, pipes etc.. The fourth axis serves for inclination of the slabs and is highly useful if, for example, the de-signer envisages the “prismatic” effect, setting out from a flat curtain wall. The infinite plays of light and related bas-reliefs possible offer free rein to the boldest creativity The façade (curtain wall) need not be prepared: the system can also be mounted directly on holed bricks, without rendering. Perfect complanation is achieved by exploiting the micro-adjustments on four axes, with a considerable saving in terms of prepara-tion costs.

THE CLOSED JOINTThe substructure in aluminium consists of wide areas of overlap which, as well as functioning as guides for facilitating laying, have top quali-ty practical and qualitative functions, thanks to special work processes carried out with work centres. The closed joint prevents the intrusion of rainwater and insects and gives the ventila-ted chamber the property of continuity. Airflows are therefore controllable in both summer and winter. In winter, due to the thermal differential between chamber and external temperatures, consequent ventilation is highly important to combat any type of condensation that may form in extreme situations, notwithstanding the ther-mo-hygroscopic calculations.

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ARCHITECTURAL DRAWING Study of all the facades to be clad as per your drawing supplied in format .dwg (plans, elevations and sections); drawing of the rational modulation of the facades, with sizing of the modules relating to the selected cladding; choice of architec-tonic definition of window soffits, lower and upper façade closure and solution for connecting all corners.

STRUCTURAL DRAWINGDrawing and technical description of the project with diagram of the structure, façade by façade, showing positioning of all the components (brackets with related “fixed points” and “sliding points”, profiles etc.); therefore a structural table for each façade indicating the positioning of the structural elements; detailed table with structural definition of window soffits, lower and upper façade closure and solution for connecting all corners.

SLAB CHARTSlab Chart with definition of all work processes to be carried out on the slabs.

STATIC TEST REPORTStatic test report on the façade system in accordance with the regulations in force for Ventilated Facades.

Technical staff draw up the executive architectonic and structural drawing on the basis of a drawing in AUTOCAD format (.dwg) supplied by the customer. Subsequently, on the basis of the architectonic executive drawing, a slab chart is deve-loped and, lastly, the static test report of the ventilated façade system is drawn up.

DESIGN

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EXAMPLE OF ARCHITECTURAL DRAWING

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EXAMPLE OF STRUCTURAL DRAWING

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EXAMPLE OF STRUCTURAL DRAWING DETAILS

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LAYING THE VENTILATED FAÇADE

1. Vertical profiles 2. L-brackets – large 2.a L-brackets - small3. Copper tang4. Mechanical plugs5. Rivets6. Starting clip7. Starting clip rivets8. Gap clip9. Spacer 4/8 mm10. EPDM

BOM OF SYSTEM TO BE LAID

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TRACING THE GRID

MOUNTING THE BRACKETS

The first operation is to define the point of departure 0.00 (usually at the bottom) and subsequently trace out the vertical (Y) and horizontal (X) reference axes for each façade to be clad, on the basis of the executive drawing.

Position the brackets (components 2 and 2.a) in correspondence to the intersections created by tracing the grid and fix them to the masonry support with the mechanical plugs supplied (component 4).

HORIZONTAL AXIS (X)

VERTICAL AXIS (Y)

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MOUNTING THE UPRIGHT PROFILESFix the upright profiles to the brackets previously fixed to the masonry support.

FIXING THE PROFILES WITH A SEALING COPPER TANGThe profiles are fixed to the brackets, as first fixing, with a sealing copper tang (component 3).

FIXING THE PROFILES WITH FIXED AND SLIDING POINTSSubsequently the upright profiles are fixed to the brackets, also by means of the FIXED POINTS, created with insertion of a rivet in the circular slot of the bracket, and the SLIDING POINTS, created with insertion of a rivet in the elongated slot of the bracket.

It is good practice to maintain a distance of at least 1 cm between two consecutive vertical upright profiles to obviate the problem of heat expansion.

FIXED POINT

SLIDING POINT

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MOUNTING THE INSULATION PANELMounting between the upright profiles of the insulating panel selected with the customer in accordance with the specific technical features dictated by the heating engineer.

MOUNTING THE CLADDING SLABSThe cladding slabs are mounted by starting installation from the bottom upwards.

INSTALLATION OF THE STARTING CLIPSFix the starting clips (component 6) by drilling a hole in the vertical upright profile and fixing the clips with rivets (compo-nent 7). The starting clip must protrude slightly downwards with regard to the vertical profile in order to conceal the latter.

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EPDM INSTALLATIONMounting on the upright vertical profiles of EPDM (ethylene propylene-diene monomer) which is a type of synthetic rub-ber (or elastomer). It has the function of reducing the vibrations produced by the cladding slab, thus avoiding that the latter should shift or emit noise.

Application from the intersection of the slabs, therefore immediately after the clips, a strip of EPDM (component 10) of around 10-15 cm long.

INSTALLATION OF THE GAP CLIPSMounting on the vertical upright profiles of the gap clips, inserting the slab in the starting clip (component 6). Insert the gap clip (component 8) in the groove of the vertical upright profile, turned 90° with regard to its final position.NB: the vertical gap must be positioned in correspondence to the centre line of the vertical profiles (component 1).

The operation is repeated, installing by progressive horizontal courses, from bottom to top.

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GAP ADJUSTMENTGap adjustment, as per the measurement chosen and drawn in the executive plan, is carried out with a gap spacer which, passed through the gap, renders it homogeneous.

NBIt is important that a slab be anchored to only one vertical profile per side and never to two consecutive vertical profiles, this to avoid expansion of the aluminium structure which might lead to breakage of the slab.

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TECHNICAL DETAILS

COMPONENTS:1. Upright profile 2. L-bracket3. Plug4. Rivet TL5. Grès cladding slab6. Gap plate7. Base plate8. Rivet9. EPDM10. Micro-perforated flashing11. Cover flashing

VERTICAL SECTION TYPE

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COMPONENTS: 1. Upright profile 2. L-bracket

3. Plug4. Rivet TL5. Gap plate

6. Rivet7. Grès cladding slab8. EPDM

COMPONENTS: 1. Upright profile 2. L-bracket3. Plug

4. Rivet TL5. Gap plate6. Rivet7. Grès cladding slab

8. Sheet metal9. EPDM

HORIZONTAL SECTION OF A GRES SOFFIT

HORIZONTAL SECTION OF A SHEET METAL SOFFIT

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