Roof coverings - Continuous rooflights of plastics with or without upstands - Classification, requirements and test methods

This European Standard specifies requirements for continuous rooflights made of plastic materials (e.g.
GF-UP, PC, PMMA, PVC) with or without bearing profiles to be used with upstands made of e.g. GF-UP, PVC, steel, aluminium, wood or concrete, for laying in roofs, which serve the purpose of lighting by means of daylight and, possibly, of ventilating interior spaces by means of opening devices.
This European Standard applies to continuous rooflights without upstand and to continuous rooflights, where a single manufacturer provides all components of the rooflight with upstand, which are bought in a single purchase.  Products covered by this European Standard may be supplied as continuous rooflights with and without upstand and rooflights intended to be used with an upstand, for which the upstand is specified, but not supplied.
It applies to continuous rooflights when mounted with an inclination  in the longitudinal direction not more than 10° to the horizontal and not more than 10° in the transversal direction (see Figure 1):
a)   with bearing profiles:
   symmetrical, angled, curved (see Figure 2) or flat (see Figure 3);
   constructed with bearing profiles parallel to the span and with a rectangular ground plan;
b)   without bearing profiles:
   symmetrical, angled or curved with an  angle not more than 45° (measured to the horizontal at the line of fixing, see Figure 4);
   constructed with a span (width) lower than or equal 2,5 m and with a rectangular ground plan.
This European Standard applies to continuous rooflights, including barrel vault rooflights, with a rectangular ground plan of plastic glazing laying in roofs having, in addition a minimum distance of b/3
(b = effective span of rooflights, corresponding to the light opening). The upstands may be self-supporting or non self-supporting.
The design of the upstand is not part of this European Standard. Upstands can be prefabricated or site fabricated. Prefabricated upstands are to be considered as p

Dachdeckungen - Dachlichtbänder aus Kunststoff mit oder ohne Aufsetzkränzen - Klassifizierung, Anforderungen und Prüfverfahren

Diese Europäische Norm legt Anforderungen an Dachlichtbänder aus Kunststoff (z. B. GF UP, PC, PMMA, PVC) mit oder ohne Tragkonstruktion zur Verwendung mit Aufsetzkränzen aus z. B. GF UP, PVC, Stahl, Alu¬minium, Holz oder Beton zum Einbau in Dächern fest, die zur Ausleuchtung mit Tageslicht und möglicherweise zum Lüften von Räumen mittels Öffnungselementen dienen.
Diese Europäische Norm gilt für Dachlichtbänder ohne Aufsetzkränze und für Dachlichtbänder, bei denen ein einzelner Hersteller alle Komponenten des Dachlichtbandes mit Aufsetzkranz bereitstellt, die in einem einzelnen Kauf erworben werden. Die durch diese Europäische Norm abgedeckten Produkte können als Dachlichtbänder mit oder ohne Aufsetzkranz sowie als Dachlichtbänder geliefert werden, die zur Anwendung mit einem Aufsetzkranz vorgesehen sind, der festgelegt ist, jedoch nicht mitgeliefert wird.
Die Norm gilt für Dachlichtbänder, die mit einer Neigung  von höchstens 10° gegen die Horizontale in Längs  und Querrichtung eingebaut werden (siehe Bild 1):
a)   mit Tragkonstruktion:
-   symmetrisch, geneigt, gebogen (siehe Bild 2) oder flach (siehe Bild 3);
-   hergestellt mit der Tragkonstruktion parallel zur Spannweite und mit rechteckigem Grundriss;
b)   ohne Tragkonstruktion:
-   symmetrisch, geneigt oder gebogen mit einem Winkel  von höchstens 45° (gemessen zur Horizontalen an der Befestigungslinie, siehe Bild 4);
-   hergestellt mit einer Spannweite (Breite) kleiner oder gleich 2,5 m und mit rechteckigem Grundriss.
Diese Europäische Norm gilt für Dachlichtbänder, einschließlich Tonnengewölbelichtbänder, mit rechteckigem Grundriss der Kunststoffverglasung, die in Dächer eingebaut werden und zusätzlich einen Mindestabstand von b/3 untereinander haben (b  rechnerische Spannweite der Oberlichter, entspricht der Lichtöffnung). Die Aufsetzkränze können selbsttragend oder nicht selbsttragend sein.

Éléments de couverture - Lanterneaux continus en matière plastique avec et sans costière - Classification, spécifications et méthodes d'essais

Strešna kritina - Zvezni plastični svetlobniki z razmikom ali brez njega - Klasifikacija, zahteve in preskusne metode

General Information

Status
Published
Publication Date
10-Oct-2006
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
11-Oct-2006
Completion Date
11-Oct-2006

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Roof coverings - Continuous rooflights of plastics with or without upstands - Classification, requirements and test methodsÉléments de couverture - Lanterneaux continus en matiere plastique avec et sans costiere - Classification, spécifications et méthodes d'essaisDachdeckungen - Dachlichtbänder aus Kunststoff mit oder ohne Aufsetzkränzen - Klassifizierung, Anforderungen und PrüfverfahrenTa slovenski standard je istoveten z:EN 14963:2006SIST EN 14963:2007en91.060.20StreheRoofsICS:SLOVENSKI

STANDARDSIST EN 14963:200701-marec-2007

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14963October 2006ICS 91.060.20 English VersionRoof coverings - Continuous rooflights of plastics with or withoutupstands - Classification, requirements and test methodsÉléments de couverture - Lanterneaux continus en matièreplastique avec et sans costière - Classification,spécifications et méthodes d'essaisDachdeckungen - Dachlichtbänder aus Kunststoff mit oderohne Aufsetzkränzen - Klassifizierung, Anforderungen undPrüfverfahrenThis European Standard was approved by CEN on 4 September 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36

B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14963:2006: E

EN 14963:2006 (E) 2 Contents Page Foreword..............................................................................................................................................................4 1 Scope......................................................................................................................................................5 2 Normative references............................................................................................................................9 3 Terms and definitions.........................................................................................................................11 4 Symbols and abbreviations................................................................................................................12 5 Requirements.......................................................................................................................................13 5.1 Radiation transmittance......................................................................................................................13 5.2 Durability..............................................................................................................................................13 5.3 Water tightness....................................................................................................................................15 5.4 Mechanical performances...................................................................................................................15 5.5 Reaction to fire.....................................................................................................................................18 5.6 Resistance to fire.................................................................................................................................18 5.7 External fire performance...................................................................................................................18 5.8 Air permeability....................................................................................................................................19 5.9 Thermal resistance..............................................................................................................................19 5.10 Airborne sound insulation..................................................................................................................20 6 Testing..................................................................................................................................................20 6.1 Radiation transmittance......................................................................................................................20 6.2 Durability..............................................................................................................................................20 6.3 Water tightness....................................................................................................................................22 6.4 Mechanical performances...................................................................................................................24 6.5 Number and dimensions of test specimens.....................................................................................32 6.6 Test report............................................................................................................................................33 7 Evaluation of conformity.....................................................................................................................33 7.1 General..................................................................................................................................................33 7.2 Initial type testing................................................................................................................................33 7.3 Factory production control (FPC)......................................................................................................34 8 Classification and designation...........................................................................................................35 9 Marking.................................................................................................................................................36 Annex A (informative)

Guidelines for safety, application, use and maintenance.......................................37 A.1 General..................................................................................................................................................37 A.2 Guidelines for safety...........................................................................................................................37 A.3 Guidelines for application and use....................................................................................................37 A.4 Maintenance.........................................................................................................................................38 Annex B (normative)

Alternative test method for determination of light transmittance...........................39 B.1 General..................................................................................................................................................39 B.2 Apparatus.............................................................................................................................................39 B.3 Test pieces...........................................................................................................................................39 B.4 Procedure.............................................................................................................................................40 B.5 Expression of results..........................................................................................................................40 Annex C (informative)

Information regarding light transmittance...............................................................41 C.1 General..................................................................................................................................................41 C.2 Material characteristics.......................................................................................................................41 C.3 Transmission........................................................................................................................................42 C.4 Reflectance factor (according to CIE)...............................................................................................42 C.5 Absorptance.........................................................................................................................................43

EN 14963:2006 (E) 3 C.6 Solar gain.............................................................................................................................................43 Annex ZA (informative)

Clauses of this European Standard addressing the provisions of EU Construction Products Directive.......................................................................................................45 ZA.1 Scope and relevant characteristics...................................................................................................45 ZA.2 Procedures for attestation of conformity of continuous rooflights...............................................47 ZA.3 CE marking and labelling....................................................................................................................52 Bibliography......................................................................................................................................................56

EN 14963:2006 (E) 4 Foreword This document (EN 14963:2006) has been prepared by Technical Committee CEN/TC 128 “Roof covering products for discontinuous laying and products for wall cladding”, the secretariat of which is held by IBN/BIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2007, and conflicting national standards shall be withdrawn at the latest by July 2008. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EN 14963:2006 (E) 5 1 Scope This European Standard specifies requirements for continuous rooflights made of plastic materials (e.g.

GF-UP, PC, PMMA, PVC) with or without bearing profiles to be used with upstands made of e.g. GF-UP, PVC, steel, aluminium, wood or concrete, for laying in roofs, which serve the purpose of lighting by means of daylight and, possibly, of ventilating interior spaces by means of opening devices. This European Standard applies to continuous rooflights without upstand and to continuous rooflights, where a single manufacturer provides all components of the rooflight with upstand, which are bought in a single purchase.

Products covered by this European Standard may be supplied as continuous rooflights with and without upstand and rooflights intended to be used with an upstand, for which the upstand is specified, but not supplied. It applies to continuous rooflights when mounted with an inclination δ in the longitudinal direction not more than 10° to the horizontal and not more than 10° in the transversal direction (see Figure 1): a) with bearing profiles:  symmetrical, angled, curved (see Figure 2) or flat (see Figure 3);  constructed with bearing profiles parallel to the span and with a rectangular ground plan; b) without bearing profiles:  symmetrical, angled or curved with an α angle not more than 45° (measured to the horizontal at the line of fixing, see Figure 4);  constructed with a span (width) lower than or equal 2,5 m and with a rectangular ground plan. This European Standard applies to continuous rooflights, including barrel vault rooflights, with a rectangular ground plan of plastic glazing laying in roofs having, in addition a minimum distance of b/3

(b = effective span of rooflights, corresponding to the light opening). The upstands may be self-supporting or non self-supporting. The design of the upstand is not part of this European Standard. Upstands can be prefabricated or site fabricated. Prefabricated upstands are to be considered as part of the continuous rooflight. Site fabricated upstands are not covered by this European Standard. This European Standard does not include calculation with regard to works, design requirements and installation techniques. The possible additional functions of smoke and heat ventilation in case of fire, and/or roof access are outside the scope of this European Standard. NOTE 1 Continuous rooflights outside of the scope of this European Standard will be covered by European Technical Approvals based on EOTA ETA-Guideline 010 "Self supporting translucent roof kits". Individual rooflights are covered by EN 1873. NOTE 2 Guidelines for safety, application, use and maintenance of continuous rooflights are presented in Annex A.

EN 14963:2006 (E) 6
side view curved arrangement

top view Key 1 joint be built-in width l span δ inclination to the horizontal Figure 1 — Range of inclination of continuous rooflights without bearing profiles δ δ

EN 14963:2006 (E) 7
side view curved arrangement
top view
Examples for different

cross sections Key 1 covering profile 2 solid or multi-wall sheet 3 bearing profile 4 upstand 5 support 6 screw 7 sealing profile 8 marginal sheet 9 single span sheet 10 double span sheet 11 triple span sheet

a inclination measured to the horizontal at the line of fixing ap spacing of the bearing profiles ar spacing of the bearing profiles for marginal sheets bA width of the bearing profiles ba supported width of the sheet la supported length of the sheet le sheet width R radius

NOTE If drilled profiles should be avoided, e.g. in PMMA-sheets, the covering profiles in curved systems can be alternatively fixed at their end (similar to a tie member). Figure 2 — Example for curved continuous rooflights with bearing profiles, for single, double and triple span systems

EN 14963:2006 (E) 8
side view flat arrangement
top view
examples for different
cross sections

Key 1 covering profile 2 solid or multi-wall sheet 3 bearing profile 4 upstand 5 support

6 screw 7 sealing profile 8 marginal sheet
9 single span sheet 10 double span sheet 11 triple span sheet

ap spacing of the bearing profiles ar spacing of the bearing profiles for marginal sheet bA width of the bearing profiles ba supported width of the sheet la supported length of the sheet le sheet width σ inclination to the horizontal Figure 3 — Example for flat continuous rooflights with bearing profiles, for single, double and triple span systems

EN 14963:2006 (E) 9
side view curved arrangement
top view
examples for different
cross sections

Key 1 single or multi-layer sheets with joints parallel to the span 2 support 3 joint 4 upstand

a inclination measured to the horizontal at the line of fixing be built-in width f

height l span la supported length of the sheet r radius of fillet

Figure 4 — Examples for curved continuous rooflights without bearing profiles 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 410, Glass in building — Determination of luminous and solar characteristics of glazing EN 596, Timber structures — Test methods — Soft body impact test of timber framed walls

EN 14963:2006 (E) 10 EN 673, Glass in building — Determination of thermal transmittance (U value) — Calculation method EN 674, Glass in building — Determination of thermal transmittance (U value) — Guarded hot plate method EN 675, Glass in building — Determination of thermal transmittance (U value) — Heat flow meter method EN 1013-1, Light transmitting profiled plastic sheeting for single skin roofing — Part 1: General requirements and test methods EN 1013-3, Light transmitting profiled plastic sheeting for single skin roofing — Part 3: Specific requirements and test methods for sheets of polyvinyl chloride (PVC) EN 1013-5, Light transmitting profiled plastic sheeting for single skin roofing — Part 5: Specific requirements, test methods and performance of polymethylmethacrylate (PMMA) sheets EN 1026, Windows and doors — Air permeability — Test method EN 13501-1, Fire classification of construction products and building elements — Part 1: Classification using test data from reaction to fire tests EN 13501-2, Fire classification of construction products and building elements — Part 2: Classification using data from fire resistance tests, excluding ventilation services EN 13501-5, Fire classification of construction products and building elements — Part 5: Classification using data from external fire exposure to roof tests EN ISO 140-3, Acoustics — Measurement of sound insulation in buildings and of building elements — Part 3: Laboratory measurements of airborne sound insulation of building elements EN ISO 178, Plastics — Determination of flexural properties (ISO 178:2001) EN ISO 527-1, Plastics — Determination of tensile properties — Part 1: General principles (ISO 527-1:1993 including Corr 1:1994) EN ISO 527-2, Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and extrusion plastics (ISO 527-2:1993 including Corr 1:1994) EN ISO 717-1, Acoustics — Rating of sound insulation in buildings and of building elements — Part 1: Airborne sound insulation (ISO 717-1:1996) EN ISO 4892-1, Plastics — Methods of exposure to laboratory light sources — Part 1: General guidance (ISO 4892-1:1999) EN ISO 4892-2, Plastics — Methods of exposure to laboratory light sources — Part 2: Xenon-arc lamps (ISO 4892-2:2006) EN ISO 6946, Building components and building elements — Thermal resistance and thermal transmittance - Calculation method (ISO 6946:1996) EN ISO 10077-2, Thermal performance of windows, doors and shutters — Calculation of thermal transmittance – Part 2: Numerical method for frames (ISO 10077-2:2003) EN ISO 10211-1, Thermal bridges in building construction — Heat flows and surface temperatures — Part 1: General calculation methods (ISO 10211-1:1995) EN ISO 10211-2, Thermal bridges in building construction — Calculation of heat flows and surface temperatures — Part 2: Linear thermal bridges (ISO 10211-2:2001)

EN 14963:2006 (E) 11 EN ISO 10456, Building materials and products — Procedures for determining declared and design thermal values (ISO 10456:1999) EN ISO 12017:1996, Plastics — Poly(methyl methacrylate) double- and triple-skin sheets — Test methods (ISO 12017:1995) EN ISO 12567-2, Thermal performance of windows and doors — Determination of thermal transmittance by hot box method — Part 2: Roof windows and other projecting windows (ISO 12567-2:2005) EN ISO 13468-1, Plastics — Determination of total luminous transmittance of transparent materials — Part 1: Single-beam instrument (ISO 13468-1:1996) EN ISO 13468-2, Plastics — Determination of the total luminous transmittance of transparent materials — Part 2: Double-beam instrument (ISO 13468-2:1999) EN ISO 14125, Fibre-reinforced plastic composites — Determination of flexural properties (ISO 14125:1998) EN ISO 14683, Thermal bridges in building construction — Linear thermal transmittance — Simplified methods and default values (ISO 14683:1999) ISO 10526, CIE standard illuminants for colorimetry ISO 10527, CIE standard colorimetric observers 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 continuous plastic rooflight element glazing element, coloured or not, which is manufactured to be self-supporting or non-self-supporting. It consists of one or several, translucent or transparent, flat or profiled skins made of solid or structured sheets, cold curved or not. It may require junction profiles for water tightness 3.2 self-supporting glazing element element in accordance with 3.1 which does not require any bearing profile. It transmits the applied loads to the upstand 3.3 non-self-supporting glazing element element in accordance with 3.1 which requires two or more bearing profiles 3.4 bearing profile element which consists of single or several profiles on which the glazing elements are fitted and which transmits the applied loads to the upstand 3.5 gable end end of a continuous rooflight, which can be vertical, curved or pitched 3.6 upstand element which is single or multi-walled or composite with vertical and/or pitched walls; with or without thermal insulation, providing an area for the fastening of plastic rooflights and/or bearing profiles and for connection to

EN 14963:2006 (E) 12 the substructure, the roof covering or the roof sealing. The upstand transmits into the substructure the loads acting upon the continuous rooflight elements. Upstands may include ventilation devices 3.7 material description chemical composition of the product, geometry, mass per unit area and supplier's/manufacturer's name 3.8 ventilation panel unit integrated into a continuous rooflight which enables its opening for ventilation purposes

3.9 accessories connections, opening and locking devices and seals for the assembly of the elements according to 3.1 to 3.6 and 3.8 3.10 batch quantity of material made in a single operation, or in the case of continuous production for a defined quantity, which need to be demonstrated by the producer to have a uniform composition 4 Symbols and abbreviations Cc Change in light transmittance expressed in % ûYI Change in the yellowness index g Total solar energy transmittance (solar factor) Hc Energy applied during the ageing procedure Ls Light transmittance of a test piece Lsn

Light transmittance of the nth test piece τA Light transmittance for the CIE-standard illuminant A expressed in % τV Light transmittance for the CIE-standard illuminant D65 expressed in % τe Solar direct transmittance expressed in % Ms

Mean of R1 and R3 Mv Light transmittance of the sample R Thermal resistance in m²·K/W R1 and R3 Reading of galvanometer without any test piece R2 Reading of galvanometer with the test piece Rw Airborne sound index in dB U Heat transmittance W/(m²·K) YI Value of the yellowness index of an aged test piece

EN 14963:2006 (E) 13 YI0 Value of the yellowness index of an un-aged test piece ûE Variation of E-modulus expressed in % û1 Variation of strength expressed in % XCIE, YCIE,

ZCIE Colourimetric coordinates 5 Requirements 5.1 Radiation transmittance 5.1.1 Degrees of total luminous transmittance (ττττV) and total solar energy transmittance (ττττe) The degrees of light transmittance τV and direct radiant transmittance τe for solar radiation of each glazing element as defined in 3.1 in new continuous plastic rooflights shall be stated by the manufacturer when measured with a photometer according to 6.1.1 either on a flat specimen and/or a finished product. In factory production control the recorded τV value of total luminous transmittance shall be within ± 5 % of the stated value. 5.1.2 Solar factor (g) The total solar energy transmittance g (solar factor) according to 6.1.2 of new continuous rooflights shall be stated by the manufacturer (see Annex C). 5.2 Durability 5.2.1 General Durability of the product is evaluated by measuring the variation of total luminous transmittance, yellowness index and mechanical properties after an ageing procedure of the rooflight material with the same energy level for the three following characteristics either on flat sheets and/or finished product. The ageing procedure shall be conducted in accordance with 6.2. NOTE For the most common materials (GF-UP, PC, PMMA and PVC) types have been indicated in EN 1013-1, -2, -3, -4 and -5. 5.2.2 Variation of light transmittance ττττV and yellowness index YI(∆∆∆∆YI) Continuous rooflights shall be classified into one of the nine types given in Table 1.

EN 14963:2006 (E) 14 Table 1 — Material classification according to the change of light transmittance ττττV and yellowness index YI(∆∆∆∆YI) Type HC GJ/m2 Change of ττττV % ûYI % ∆A 18 ≤ 5 ≤ 10 ∆B 18 ≤ 5 ≤ 20 ûC 18 ≤ 10 ≤ 10 ûD 18 ≤ 10 ≤ 20 ûE 10 ≤ 10 ≤ 10 ûF 10 ≤ 10 ≤ 20 ûG 10 ≤ 15 ≤ 20 ûH 6 ≤ 15 ≤ 20 ûI 4 ≤ 15 ≤ 20

The figures indicated for the change of light transmittance τV refer to variation in percentage of the initial value. 5.2.3 Variation of mechanical properties The tensile strength and Young’s Modulus are properties of a material which can vary with age. Where required, the variation of the properties shall be determined by a bending test (or a tensile test) as defined in 6.2.4. The percentage reduction in Young’s Modulus, E, and tensile strength, 1, between new samples and samples aged to energy exposures (Hc) as described in Table 1, shall then be expressed in accordance with Tables 2 and 3. If the geometry of a multi-walled sheet does not allow the mechanical test on each wall, the test shall be carried out on a solid sheet of the same formulation and of a thickness not greater than the combined horizontal wall thicknesses.

EN 14963:2006 (E) 15 Table 2 — Material classification according to the change of E-Modulus after an ageing procedure at the same energy level Hc selected from Table 1 Type ûE % Cu 0 ≥ 0 Cu 1 0 > ûE ≥ -10 Cu 2 -10 > ûE ≥ -20 Cu 3 -20 > ûE ≥ -30

Table 3 — Material classification according to the change of σσσσ after an ageing procedure at the same energy level Hc selected from Table 1 Type ∆∆∆∆σσσσ % Ku 0 ≥ 0 Ku 1 0 > ∆σ ≥ -10 Ku 2 -10 > ∆σ ≥ -20 Ku 3 -20 > ∆σ ≥ -30

5.3 Water tightness 5.3.1 Continuous rooflights with upstand Water tightness shall be assessed when subject to regulatory requirements and may be assessed otherwise. The continuous plastic rooflight in the closed condition shall be tested in accordance with 6.3. No water shall drop from the internal surface. The design of the continuous rooflight shall ensure that water drains away. 5.3.2 Rooflight sheets (may be used for continuous rooflights without upstand) Water tightness shall be assessed when subject to regulatory requirements and may be assessed otherwise. The products covered by this European Standard are water impermeable provided that they are free of defects such as holes. The absence of such defects shall be checked by visual inspection of the finished product. 5.4 Mechanical performances 5.4.1 General The mechanical performances shall be tested in accordance with 6.4.1. Alternatively for continuous rooflights with bearing profiles which can be calculated according to e.g.

EN 1994-1-1, calculation may be used instead of testing, provided that the junction of bearing profile - glazing element is tested.

As a result of the testing method, the acting forces are normal to the glazing element surface instead of horizontal.

EN 14963:2006 (E) 16 The stiffness of any upstand, in all directions, shall be equal to or larger than the stiffness of the upstand subjected to verification by testing or by calculation.

If upstands differ from the one tested or calculated together with the continuous rooflight itself, their performance shall be calculated using the forces exerted by the rooflight in horizontal and vertical directions; the deformation has to be lower than or equal to that tested or calculated. 5.4.2 Resistance to upward loads Resistance to upward loads shall be assessed when subject to regulatory requirements and may be assessed otherwise. According to their resistance to upward loads, continuous plastic rooflights are classified into one of the four types as given in Table 4. Table 4 — Classes of upward loads Type Load N/m2 UL 1000 1 000 UL 1500 1 500 UL 3000 3 000 UL A a Aa a

The value of A can be selected to meet specific requirements.

The designations UL 1000, UL 1500, UL 3000 and UL A represent the test upward load in N/m2 applied, when the continuous rooflight is tested in accordance with 6.4.1. When tested in accordance with 6.4.1, the rooflight shall be capable of resisting the test load. A successful test is achieved if neither damage nor permanent deformation occurs which would affect the performance in use (e.g. water tightness, opening). 5.4.3 Resistance to downward loads Resistance to downward loads shall be assessed when subject to regulatory requirements and may be assessed otherwise. According to their resistance to downward loads, continuous plastic rooflights are classified into one of the five types as given in Table 5.

EN 14963:2006 (E) 17 Table 5 — Classes of downward loads Class Load N/m2 Asymmetric load a N/m2 D

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