CLASSIFICATION OF FIRE RESISTANCE OF AN ALUMINIUM CURTAIN WALL STRUCTURE, TYPE CW50-FP, ACCORDING TO EN :2007+A1: 2009

Transcription

1 CLASSIFICATION OF FIRE RESISTANCE OF AN ALUMINIUM CURTAIN WALL STRUCTURE, TYPE CW50-FP, ACCORDING TO EN :2007+A1: 2009 Sponsors: Reynaers Aluminium NV/SA Oude Liersebaan 266 B-2570 Duffel Belgium Issued by: Efectis Nederland BV Lange Kleiweg GH Rijswijk The Netherlands Notified Body no.: Name of product: Classification report no.: aluminium curtain wall structure, type CW50-FP 2011-Efectis-R0335[Rev.1] Project number: Version no.: 02 Date of issue: February 2012 This report is issued by Efectis Nederland BV (previously TNO Centre for Fire Research). Efectis Nederland BV and her sister company Efectis France are full subsidiaries of Efectis Holding SAS since 1 January 2008, in which the Dutch TNO and the French CTICM participate. The activities of the TNO Centre for Fire Research were privatized in Efectis Nederland BV since 1 st July This is in response to international developments and requests by customers. In order to be able to give a better answer to the customer s request and offer a more comprehensive service of high quality and a wider range of facilities, the international collaboration has been further expanded. This is done with highly experienced partners in fire safety in Norway (Sintef-NBL), Spain (Afiti-Licof), Germany (IFT), USA (South West Research Institute) and China (TFRI). Further information can be found on our website. This classification report comprises 18 pages and may be used in its entirety only. 1

2 1 Introduction This classification report classifies the element, an aluminium curtain wall structure, type CW50-FP, according to EN : A General Testing was performed on a curtain wall construction with the following main dimensions: Width: 4530 mm Height: 3700 mm The curtain wall was subdivided by aluminium mullions and transoms into 17 bays, of which: 6 bays were fitted with insulating glass; 11 bays were fitted with insulated panels with glass face plates. The elevation of the curtain wall is shown in figure 1. The wall construction was installed in a steel curtain wall frame with the following overall dimensions: w x h = 6,000 x 5,000 mm. The inside dimensions of the supporting construction [the concrete floors with a thickness of 200 mm and aerated concrete piers with a thickness of 150 mm] where the same as the inner furnace dimensions w x h = 4,000 x 3000 mm. The edges of the structure exhibited the following junctions: a) free edge; b) mullion junction with a partition wall; c) junction to the floor of a storey; d) junction to the ground floor. For the dimensions and specifications of the materials and components of the examined construction, see figures 1 until 8. Significant details of the construction are given in the paragraphs below. The numbers in the text between brackets correspond with the numbers of the part list. 2.1 Materials Mullions and transoms The mullions [ XX] consist of aluminium sections with an integrated tube with dimensions of 46 x 46 mm. The aluminium tube sections of the mullions are fitted with a steel tube section with dimensions of 40 x 40 x 4 mm [0S ]. Refer to the cross-sections shown in figure 1. The transoms [ XX] consist of aluminium sections with dimensions of 78.4 x 50 mm, provided with Supalux S cooling material [ ], dimensions 9 x 45 mm. The chambers with the cooling material were sealed with L. Marichal Silirub 2 silicone [ XX]. 2

3 The transoms of the curtain wall featured machined recesses that were attached to the mullions by means of aluminium T-brackets [ ] and stainless-steel bolts. For fitting of the mullions to the concrete frame structure, anchors of type CW 50 were fitted to the framework at the corner points. The aluminium brackets, type CW 50 are shown in figure 4 and Pressure plates and caps Vertical aluminium pressure plates [ ] are fitted into the PVC profile [ ], [used for compartimentation] and the screw channel by means of stainless steel screws alternating [ , ] and steel plates [ ] [40 x 40 x 3 mm] with a spacing of 300 mm. The steel plates are used to secure the fixation of the glass in case of a fire. Horizontal aluminium pressure plates [ ] are fixed with screw [ ], [M6] and steel plate [ ] in the glass support, the rest of the profile is fixed in PVC profile [ ], [used for compartimentation] and the screw channel with screws [ ]. The pressure plates are covered with aluminium caps [ XX] and [ XX], with integrated Supalux S cooling material [ ] with dimension 12 x 45 mm and [ (1BF.1695)] with dimensions 6 x 45 mm Glazing and panel sections For sealing against the glazing and the panels, two types of glazing seals manufactured from modified EPDM are fitted into the mullions and transoms. Glazing seal [ ] and [ ] on the inside; and the glazing seals [ ] on the outside. Between outside glazing gaskets and glazing, an aluminium sealing tape [ ] was continuously fixed vertically and horizontally, to seal off the opening between two glazing panes or panels Support and intumescent materials The glass panes and panels are located on different steel glass supports. [ ], [ ] and [ ], see figure 8. On top of the support aluminium silicate glass support blocks [ ] are fitted. In the rebate around the perimeter, self adhesive intumescent material, type Flexilodice [ ] with dimensions of 55 x 1.5 mm is applied against the screw sockets of the mullions and transoms. 2.2 Glazing Type: Contraflam 60-3 Climaplus, Vetrotech Saint-Gobain International Construction: Float glass 6 mm including coating type SGG Planitherm Ultra neutral on the outside of the construction Aluminium spacer, 16 mm Contraflam 60-3, 27 mm fire resistance glazing with three intumescent interlayers on the inside of the construction exposed to fire The total thickness is 49 mm For the remaining dimensions and weights of the glass panes, refer to table 1. 3

4 Table 1: Glazing Glass pane [see figure 1] Dimensions [w x h] [mm] Weight [kg] A x A x A x A x A x A x Panels Panels B Panels B [see figure 1]: WPI panels, comprising: Hardened glass, Scheuten Solar Glass Colorsafe thickness 8 mm, with tinted black coating on the inside; Mineral wool Conrock Q5: Grenamat, thickness 19 mm; SV Steel plate, thickness 2 mm; Total thickness 49 mm. For further details, refer to table 2 and figure 5. For the remaining dimensions and weights of the panels, refer to table 2. For further details, refer to part list and figure 4. Table 2: Panels Panel [ see Figure 1] Dimensions [w x h] [mm] Weight [kg] B x B x B x B4 578 x B5 578 x B6 578 x B7 578 x B x B x B x B x

5 2.4 Attachment of the curtain wall and sealing with the frame The curtain wall was mounted against a special frame with two concrete floors and two aerated concrete walls. In compliance with EN : 2006 the wall had a continuous overhang part in place of the upper simulated floor and the partition wall. This means a construction with at the top a horizontal gap seal. On the right side it was constructed with a partition wall with a vertical gap seal, as seen from the non exposed side. The construction was on the left side provided with a so-called free edge according to EN : 2006 paragraph 6.3.2, thus permitting maximum horizontal deformation at this point as seen from the non exposed side Top and bottom side The mullions of the curtain wall were mechanically attached to the floors. For this purpose, aluminium brackets were used, type CW 50. The independent brackets were attached to the outside edge of the floor of the furnace chamber by means of steel anchors, dimensions 130 x 10 mm Gap Seals The sealing between the upper simulated floor and the curtain wall consisted of a strip of Promatect- H with a thickness of 25 mm, which was attached to the underside of the floor. For sealing purposes, a strip of Flexolodice with dimensions 55 x 2 mm was attached between the curtain wall and the Promatect-H board and sealed off with silicone Reynaers Firestop 700 [ref ]. The cavity between the upper simulated floor and the curtain wall was filled with mineral wool [loose wool], see figure Junction with a fire compartment wall The right hand side comes across a simulated wall. The junction consisted of a Promatect-H board with a thickness of 25 mm, which was attached to the edge of the simulated wall. The seams between the Promatect-H board and the curtain wall were sealed with Flexilodice with dimensions 55 x 2 mm, see figure 7. The other vertical junction, on the left hand side, with the furnace was a free edge, see also figure 7. On this side also a Promatect-H board with a thickness of 25 mm was placed. The space between the curtain wall and the board was 5 mm and filled with Rockwool mineral wool. 2.5 Test frame with supporting construction The test frame with internal dimensions of 6000 x 5000 mm [w x h] was provided with two concrete plates with dimensions 6000 x 750 x 200 mm [l x w x t] and a density of 2000 kg/m 3 to simulate the upper and lower floors. At the left side at a distance of 4000 mm of the construction piers masonry were erected of aerated light weight concrete, with a density of 675 kg/m 3. The created aperture for the curtain wall structure was 4000 x 3000 mm [w x h]. 5

6 3 Test report with field of application & test results to substantiate classification 3.1 Test report Name of laboratory Name of sponsor Test report number Test method Efectis Nederland BV Centre for Fire Research 3.2 Test results Reynaers Aluminium NV/SA 2011-Efectis-R0334[Rev.1] EN :2006 Table 3.1 Summary of test results for internal exposure Surface or horizontal/ linear gap seal Surface 2 Surface 3 Surface 4 Surface 5 Surface 6 Horizontal linear gap seal Vertical linear gap seal Criterion Cotton pad 81,not measured 81, no 81, no 81, no 81, no 81, no 81, no Integrity [E] Insulation [I] Gap gauge Flaming Mean. temp. Max. temp 81,not measured 81,not measured 81, no 74 Not applicable 81, no 81, no 81, no Not applicable 81, no 81, no 81, no Not applicable 81, no 81, no 81, no Not applicable 81, no Not applicable 81, no 81, no 81,no Not applicable 81, no 81, no 81,no Not applicable 81, no 4 Classification and field of application 4.1 Frame of reference for classification This classification is made according to section of EN : A1: Classification The element, aluminium curtain wall structure, type CW50-FP, has been classified according to the following criteria and classes. The asymmetrical specimen was heated with the standard fire curve from the inside. 6

7 Classification of fire resistance: EI 60 i o 5 Field of direct application The results are directly applicable to constructions where one or more of the following changes are made relative to the construction tested: - decrease in the modular width and height of glazed and/or non-glazed areas; - decrease in distance between the mullions or transoms; - increase in mullion sizes; - increase in panel or panel insulation thickness; - decrease in the distance in between fixing centres, vertical and horizontal; - increase in floor thickness and/or density; - increase in seal thickness, measured in the direction of the floor and/or wall thickness, and increase of - the density of a seal of mineral wool; - decrease in seal width. 5.1 Extension of width and height Test results are valid for curtain walling systems of increased width provided the construction details (distance of mullions etc.) are the same as the one tested. The results are valid for curtain walling systems of greater height (extending over more than one floor) provided the distance between the floors is equal to or smaller than that tested. 6 Restrictions This classification report does not represent a type approval or certification of the product. Signed Approved P.G.R. Scholten, B.Sc. R.D. Scheepe, B.Sc. This report is issued by Efectis Nederland BV (previously TNO Centre for Fire Research). Efectis Nederland BV and her sister company Efectis France are full subsidiaries of Efectis Holding SAS since 1 January 2008, in which the Dutch TNO and the French CTICM participate. The activities of the TNO Centre for Fire Research were privatized in Efectis Nederland BV since 1 st July This is in response to international developments and requests by customers. In order to be able to give a better answer to the customer s request and offer a more comprehensive service of high quality and a wider range of facilities, the international collaboration has been further expanded. This is done with highly experienced partners in fire safety in Norway (Sintef-NBL), Spain (Afiti-Licof), Germany (IFT), USA (South West Research Institute) and China (TFRI). Further information can be found on our website. 7

8 7 Figures Part list Reynaers CW 50-FP Figure 1: Dimensions of construction and position of cross-sections. Figure 2: Cross-section A-A and B-B. Figure 3: Cross-section C-C. Figure 4: Detail anchoring and cooling material. Figure 5: Cross-section D-D. Figure 6: Cross-section E-E Figure 7: Cross-section F-F and G-G. Figure 8: Positions of glass supports and types of glass supports. 8

9 CW 50-FP Test element: Parts list PROFILES Article number Name Description XX Mullion 79mm Extruded aluminium profile (EN- AW6060 T66) XX Transom 79mm Extruded aluminium profile (EN- AW6060 T66) 0S Steel tube Metallised steel, 40x40x2mm Vertical pressure plate Extruded aluminium profile (EN- AW6060 T66) XX Vertical face cap Extruded aluminium profile (EN- AW6060 T66) Horizontal pressure plate Extruded aluminium profile (EN- AW6060 T66) XX Horizontal face cap Extruded aluminium profile (EN- AW6060 T66) Insulator HPVC drainage profile with integrated screw channel Accessories Article number Name Description Glass support Stainless steel Glass support Stainless steel Glass support Stainless steel Fixation plate 40x40x3mm, stainless steel T-bracket T-bracket for fixation of transom to mullion Glazing blocks Aluminium silicate glass support block - 100x50x2mm Sealing tape Aluminium tape, 50x0.38mm Intumescent strip Graphite base intumescent strip, Flexilodice (Odice), 55x2mm Cooling material Supalux S, 6x45mm, self adhesive Cooling material Supalux S, 12x45mm, self adhesive Cooling material Supalux S, 9x45mm Filling piece steel tube Promatect-H core + Flexilodice layer, 20x20x40mm End piece Santoprene 90 Shore A Bolt M10x130mm (Fix anchorage of mullion) Axle Ø10x105mm (Loose anchorage of mullion) Self drilling bimetal screw Ø5.5x110mm (vertical pressure plate) 9

10 Accessories Screw M6x30mm ( in glass support) Screw Ø6.3x64mm (horizontal pressure plate in transom) Synthetic washer For Screw Ø6.3x43mm (glass support in transom) Screw M6x70mm (glass support in mullion) Screw Ø4.2x13mm (transom to mullion) CW 50 anchor Gaskets Aluminium extrusion Article number Name Description Inner glazing gasket EPDM 60 Shore A (mullion) Inner glazing gasket EPDM 60 Shore A (transom) Outer glazing gasket EPDM 60 Shore A 10

11 Figure 1: Dimensions of structure and positions of cross-sections. 11

12 Figure 2: Cross-section A-A and B-B. 12

13 Figure 3: Cross-section C-C. 13

14 Figure 4: Detail anchoring and cooling material. 14

15 Figure 5: Cross-section D-D. 15

16 Figure 6: Cross-section E-E. 16

17 Figure 7: Cross-section F-F and G-G. 17

18 Figure 8: Positions of glass supports and types of glass supports 18