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TECHNICAL REPORT Construction Products Regulation (CPR) The CPR comes into effect on 1 July 2013 and after that date all construction products which have harmonised European Standards need to: Have a Declaration of Performance (DoP) Be CE marked Masonry units are covered by the EN 771 series of harmonised standards so every product manufactured to it needs to have a DoP and be CE marked from that date. as possible as you are not supposed to give information on the listed essential characteristics elsewhere if you do not give it in the DoP. For essential characteristics not required either for the intended application or for use in the UK you can state NPD (No Performance Determined). You can, of course, give additional product information demanded by the market in your technical literature but not in the DoP. The DoP refers just to your legal obligations under the CPR. The list of Essential Characteristics was drawn up based on whether there was a regulatory requirement to provide a value in at least one EU member state. With so many EU member states it is therefore a long list and covers properties which are not required by UK regulations but are often supplied to meet market demands. DECLARATION OF PERFORMANCE (Example) No. (your product code) Although strictly not yet possible under the terms of the CPR, it is generally agreed that, in the UK your DoPs can be on a website (but a customer can ask for a paper copy). The EN 771 series of standards are in the process of being amended to: Make them CPR compliant Give examples of DoPs and CE marks Allow abbreviated DoPs and CE marking to be used Both BPCF and The Construction Products <strong>Association</strong> (CPA) are in the process of separately negotiating with Trading Standards to obtain agreements for their members to provide CE marking electronically. Any agreement reached would only be applicable to supply in the UK and Trading Standards will only accept electronic CE marking of products supplied by members of BPCF or CPA as appropriate. These arrangements have not yet been finalised. If you would prefer to provide CE marking electronically that leaves the final preparation of your CE marking arrangements in limbo until an agreement is reached. However, there are no major issues with DoPs so these should now be prepared. The following example is based on the simplified example in the draft amended Annex ZA to EN 771-3. 1. Product type: (your product code) 2. Identification: (your product code) 3. Intended use: in walls, columns and partitions 4. Manufacturer: AnyCo SA, Any Street 1 B-1050 Brussels, Belgium Email: anyco.sa@provider.be 5. Authorised Representative: Not applicable 6. AVCP System 4 7. Harmonized standard: EN 771-3 8. ETA: Not relevant 9. Declared performance Essential characteristics Dimensions (1) Configuration (1) Compressive strength(1) Dimensional stability (1) Length Width Height Tolerance category Shape and features Group according to EN 1996-1-1 (EC6) Mean compressive strength Direction of load Unit category Performance 440 mm 100 mm 215 mm D1 NPD Group 1 7.3 N/mm² Perpendicular to bed faces Category II 0.5mm/m (measured value) Bond strength (1) Shear bond strength 0.15N/mm 2 (tabulated value) Reaction to fire (2) Water absorption (3) Water vapour permeability (4) Flexural bond strength NPD A1 (Commission Decision 2000/605/EC) < 3 g/m² (measured value) 5/15 (tabulated value) Harmonized technical specification EN 771-3: 2013 You have to assign a number to each DoP and there should be a DoP for each product but you could, for example, group all widths of a given strength of a product range under one DoP. It is recommended that you use your existing product code as your DoP number. The example and your copy of BS EN 771-3 should be sufficient to enable you to complete your DoPs but some explanatory notes are given. The DoP is essentially a formatted data sheet. You should complete it as fully Direct airborne sound insulation (5)(in end conditions)/ [Density and configuration] Gross density 1900 kg/m 3 Configuration; dimensions and tolerances Thermal resistance/ or density and configuration (6) Durability against freeze/thaw Dangerous substances See configuration 0.90 λ 10, dry, unit (tabulated value) (1) for units intended to be used in elements subject to structural requirements (2) for units intended to be used in elements subject to fire requirements (3) for units intended to be used in damp proof courses or in external elements with an exposed face (4) for units intended to be used in external elements (5) for units to be used in elements subject to acoustic requirements (6) for units intended to be used in elements subject to thermal insulation requirements Pass NPD 10 www.cba-blocks.org.uk
TECHNICAL REPORT 10. The performance of the product identified in 1 and 2 is in conformity with the declared performance in 9. This declaration of performance is issued under the sole responsibility of the manufacturer identified in 4. Signed on behalf of the manufacturer: Quality manager (name and function) <strong>Concrete</strong>town, 30.06.2013 (Place and date of issue) ........... (Signature) Notes Configuration You have the choice of giving details of the volume of voids, shell and web thicknesses as specified in BS EN 771-3 or just stating the Group of unit. Group 1 units are those with up to and including 25% voids. Group 2 units are those with more than 25% voids. Units cast on end and also containing voids (ie horizontally perforated) will be group 4 units. (Perforations I group 1 & 2 units are vertical). It is recommended that you give NPD against the ‘shape and features’ box and state the group. Compressive strength/ unit category You have to state category I or Category II. Category I applies if you have third party surveillance of your factory production control. Dimensional stability This is moisture movement and you should have had this property measured for each product (ie each strength of each product) you manufacture. However, do not give the measured value but one you are confident of achieving. Bond strength The shear bond strength is a tabulated value so give the value shown in the example. Flexural bond strength is only required in Finland so put NPD. Reaction to fire Complete as indicated unless your product contains more than 1% combustible material by mass or volume. Water absorption You only need to give a value if your product is for use externally without render (normally a facing unit). Again if you need to measure it is best to give a safe value rather than the measurement result. Water vapour permeability This is used in condensation risk calculations and the tabulated value given can be used unless you make dense aggregate blocks with a gross density of 2200kg/m 3 when you should give a value of 30/100 or 50/150 for a density of 2300kg/m 3 or greater Thermal resistance BS EN 771-3 allows you to give the λ 10,dry , unit value or density and configuration. Tables of λ 10,dry , unit values are given below. These are values which have not been corrected for equilibrium moisture content so are only to meet the legal requirements of giving a value in the DoP. For trade within Europe where products cross borders and countries have different assumed equilibrium moisture contents for masonry units it is convenient way of supplying a value. For units with voids an equivalent or apparent λ-value would need to be given. This will need to be calculated in accordance with BS EN ISO 6946. The λ 10,dry value is not to be confused with a design value. For voided units the choice of providing density and configuration details may therefore be more convenient. Durability against freeze/thaw The UK guidance on this used to be in BS 5628-3 but is now in PD 6697. You will need to state ‘not to be used exposed’ for units which are not one of the following: Dense blocks or Lightweight aggregate blocks of at least 1500kg/m 3 density or Lightweight aggregate blocks of at least 7.3N/mm 2 strength. Otherwise state ‘pass’. Dangerous substances State NPD as there is no requirement to address this property in the masonry standards as yet. The following λ10,dry, unit values should be used for solid units (interpolate for intermediate densities). Density λ 10,dry,unit 1800 0.82 1900 0.90 2000 1.00 2100 1.11 2200 1.24 2300 1.37 Values for dense and manufactured stone units Density 800 0.19 900 0.22 1000 0.26 1100 0.30 1200 0.34 Values for pumice units λ 10,dry,unit Density λ 10,dry,unit 600 0.16 700 0.19 800 0.22 900 0.26 1000 0.30 1100 0.34 1200 0.39 Values for expanded clay units Density The simplest form of CE marking given as an example in the draft amendment to Annex ZA of EN 771-3 is: AnyCo SA Any Street 1 B-1050 BRUSSELS Where: 13 λ 10,dry,unit 1200 0.33 1300 0.35 1400 0.37 1500 0.39 Values for FBA units Density λ 10,dry,unit 1200 0.52 1300 0.58 1400 0.66 1500 0.74 1600 0.83 Values for other lightweight aggregates (eg blends) (your product code) EN 771-3 DoP: (your product code) NB: None Product information: www.anyco.be/(your product code) The number 13 is the year in which the CE mark was first affixed NB refers to the Notified Body (the body responsible for the surveillance of your FPC – if any) The final line is the link to your DoP for the product Unless there is agreement with UK Trading Standards to supply the CE mark electronically this is the minimum information you will be able to supply with every delivery/collection. The requirements are that the CE mark is given on the product or on the packaging or on/with delivery documentation. This will mean that it is supplied on/with delivery documentation by most members. As merchants will need to pass on your CE mark when they sell from yard stock it will be advantageous to keep CE marking as simple as possible. Having a link to your website and the DoP, which the merchant can quote on his delivery documentation, will probably be the best option to achieve simplicity. Continued www.cba-blocks.org.uk 11
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