Beco Products Ltd BECO CONCRETE FORMWORK
Contents
1. Pass Se ees SS Ses SG Ti ieie eiieeii Overall width mm 250 973 438 250 375 438 250 alaa FI 438 250 312 5 O72 A38 250 37D 438 Width amp J3 180 ZAS ee 243 Ja LS 243 Height mm 2309 250 250 250 250 200 250 250 250 250 250 250 250 250 250 290 250 85 105 140 140 200 140 200 140 200 length mm Various Various Various 1250 1250 1250 ol 3125 Es ZS 750 Various Various Various Various Various Various continued Table 1 Range of system elements continued Element Overall width Width Height Core Length mm A mm B mm Height adjuster 55 62 5 750 pa 120 62 5 7 750 ofl 1 63 62 5 750 End piece TI 5 250 aa p 140 250 7 202 5 250 A 265 250 Fire stop end piece 250 Corbel block 250 1 In increments of 62 5 mm 1 2 The elements are provided with castellated joints along the top and bottom edges and interlocking joints at vertical edges All element faces have grooves 2 5 mm deep and 17 5 mm wide at 62 5 mm centres to provide a key tor the application of plaster or render Each element interlocks and builds horizontally and vertically into a tight rigid formwork when connected together Once connected together the formwork enables a series of connecting concrete columns or a continuous concrete core 140 mm or 200 mm wide to be formed by pouring2. Risk of condensation walls openings and junctions with other elements will adequately limit the risk of surface condensation see section 8 Behaviour in relation to fire the concrete walls formed trom the system provide tire resistance when designed in accordance with BS 8110 2 1985 or BS EN 1992 1 2 2004 see section 9 Sound insulation separating and internal walls with a minimum concrete core density and detailing stated in this Certificate will provide sufficient sound resistance see section 1 4 Durability the system components are durable see section 16 The BBA has awarded this Certificate to the company named above for the system described herein This system has been assessed by the BBA as being fit for its intended use provided it is installed used and maintained as set out in this Certificate On behalf of the British Board of Agr ment l Clu T 6 Sa PO IF m Date of First issue 17 February 2014 Brian Chamberlain Claire Curtis Thomas Head of Approvals Engineering Chief Executive The BBA is a UKAS accredited certification body Number 113 The schedule of the current scope of accreditation for product certification is available in pdf format via the UKAS link on the BBA website at www bbacerts co uk Readers are advised to check the validity and latest issue number of this Agr ment Certificate by either referring to the BBA website or contacting the BBA direct British Board of Agr ment te
3. window openings cill direct into concrete ceiling joist and ceiling finish wallplate fixed lt to Wallform insulation z structure A Wallform wall and roof detail Wallform lintel block lintel reinforcing sealant i gap filling foam galvanised metal straps screwed to frame plugged and screwed to sealant i concrete core a ae L Z Z Z Z expanding US AG od lt d 4 a LG of Afi foam A 4 Vie ae lt q a Z l E Z g Fa TA A Ae 4 A A J J Wallblock A F lt f a insert k Sc door window detail Page 12 of 16 Figure 2 Typical installation continued a a 5 A 4 A 3 a 7 Wallform A i a A J J 4 J a J height adjuster i lt a lt 4 standard Wallform J J A 4 A floor level g aan lt floor level ay A 4 A
4. Page 13 of 16 19 9 For concrete pumping line diameter at point of delivery should be 100 mm using a flexible end hose and concreting nozzle The concrete pumping rate should be such that excessive pressure is not allowed to occur both for the safety of the site operative and to avoid damage to the formwork The stream of concrete should be aimed directly into the void and away trom corners The concrete pour height should be restricted to 500 mm for reinforced concrete and 900 mm for unreintorced concrete 19 10 The formwork should be checked for alignment and plumb before proceeding with the next pass this will also allow the first pour to stiffen The next pass proceeds in the same manner until the first storey height has been reached At window and door openings concrete is poured either side of each opening up to sill level and the concrete allowed to stiffen before the next pour is commenced 19 11 When forming horizontal construction joints between concrete pours a gap of 100 mm should be lett below top of formwork lifts Heavy wall loads 19 12 Heavy wall loads such as structural members should be supported by the concrete core and not the formwork elements This can be achieved by the use of timber blocks screwed or bolted into the concrete core or castin anchor bolts and metal plates 19 13 Consideration should be given at the design stage to the positioning of damp proot courses and gas membranes wall fixings service pipes and
5. The following is a summary of the assessment and technical investigations carried out on the Beco Walltorm Insulating Concrete Formwork System 4 Use A The Beco Walltorm Insulating Concrete Formwork System is for use as permanent insulated formwork in loadbearing and nonloadbearing reinforced and unreintorced concrete external internal and separating walls in domestic and commercial buildings subject to design limitations regarding height load and fire risk Use in any structures is subject to design limitations in accordance with British or European Standards 4 2 The system provides permanent formwork for in situ concrete walls and contributes to the thermal insulation of the tinished construction 4 3 The system has not been assessed for use below ground such as basement construction where a watertight construction and resistance to hydrostatic pressure from ground water or other liquids is required Use in this situation is therefore outside the scope of this Certificate 4 4 The foundations are outside the scope of this Certificate but must be adequate to support the intended loads 4 5 The system is for use with the internal and external finishes to the specification given in section 1 7 of this Certificate Page 7 of 16 5 Practicability of installation The system must only be installed by installers who have been trained and approved by the Certificate holder see sections 17 and 18 6 Structural performance General
6. 55 in situ dense aggregate concrete 4A Structures subject to the national Building Regulations incorporating the system should be designed to the m The system is satisfactory for use in loadbearing and non loadbearing walls as permanent formwork for F relevant sections of BS 8007 1987 BS 8102 2009 BS 8110 1 1997 or BS EN 1991 1 4 2005 BS EN 1992 1 1 2004 and BS EN 1992 1 2 2004 and certified by a suitably qualified and experienced individual 6 3 Other buildings not subject to any of the Regulations defined in section 6 2 should also be built in accordance with these same Standards 6 4 The concrete is not easily examined after casting therefore as specified in BS 8110 1 1997 Section 2 or BS EN 1992 1 1 2004 Sections 4 and 8 care must be taken to ensure full compaction is achieved If required compaction may be checked by removal of a small section of the EPS element to allow observation and then securely replaced Particular attention should be given to compaction of concrete in basement walls and areas adjacent to formed openings 6 5 Storey height walls using the system are normally constructed in one continuous lift see section 17 4 Particular care is necessary fo maintain alignment during concrete filling and checking between lifts Propping systems see section 6 12 used in conjunction with the tormwork must be checked prior to and during the concrete pour to ensure stability and alignment is maintaine
7. 10 2 only Reinforcement and concrete specification Concrete thickness mm 30 60 90 180 240 Walls with less than 4 reinforcement made trom dense aggregate a 200 Walls with 0 4 to 1 reinforcement made from dense aggregate with 25 mm cover to reinforcement 140 140 140 200 Walls with over 1 reinforcement made from dense aggregate with 25 mm cover to reinforcement 140 140 140 200 200 1 Concrete walls constructed from the formwork system have been assessed in accordance with BS 8110 2 1985 Table 4 6 note actual element core widths stated in Table 4 2 Excluding any combustible finish for a fire resistance loadbearing capacity integrity and insulation Table 5 Minimum concrete core thickness for loadbearing reinforced concrete walls Firewall elements only as per BS EN 1992 1 2 2004 Table 5 4 Standard fire resistance Minimum dimensions mm Wall thickness axis distance for pel 0 35 y2 0 7 wall exposed on one side wall exposed on two sides wall exposed on one side wall exposed on two sides REI 30 100 108 120 108 120 108 120 108 REI 6O 110 108 120 108 130 108 140 108 REI 9O 120 208 140 108 140 258 170725 1 Centre of reinforcement to nearest exposed surface 2 The definition of p is given in BS EN 1992 1 1 2004 Section 5 3 2 3 3 Normally the cover specified in BS EN 1992 1 1 2004 will control this distance 9 7 Reinforced concrete walls constructed from the Standard system
8. Construction Design and Management Regulations 2007 Construction Design and Management Regulations Northern Ireland 2007 Information in this Certificate may assist the client CDM co ordinator designer and contractors to address their obligations under these Regulations See sections 3 Delivery and site handling 3 1 and 3 4 and 17 Installation General 17 2 of this Certificate Additional Information NHBC Standards 2014 NHBC accepts the use of the Beco Wallform Insulating Concrete Formwork System provided it is installed used and maintained in accordance with this Certificate in relation to NHBC Standards Beco Wallform Insulating Concrete Formwork System provides permanent formwork for in situ dense aggregate concrete walls reinforced or plain and contributes to the thermal insulation of the finished construction The system is for use in loadbearing and non loadbearing internal external and separating walls in residential and commercial buildings subject to structural and fire considerations and building use The system can also be used below ground subject to design and supervision by a Chartered Structural Engineer and adherence to structural design to British or European Standards see section 6 2 and detailing in accordance with BS 8102 2009 However below ground watertight construction and protection against ingress of ground water has not been assessed and is outside the scope of this Certiticate Use of
9. elements ie with EPS webs for use in other than separating walls should be assessed for tire resistance in accordance with BS 8110 2 1985 section 4 or BS EN 1992 2 2004 section 5 3 9 8 For unreintorced walls constructed trom the Firewall system elements acting as fire walls the minimum thickness requirements set out in BS EN 1992 1 2 2004 clause 5 4 2 must be taken into account 10 Weathertightness Resistance to rain ingress is provided by the external tinishes and has not been assessed by the BBA Care should be taken to ensure the design and construction using the system complies with the relevant good practice described in the applicable codes and the Certificate holder s Installation procedures 11 Damp proofing and waterproofing 11 1 The formwork elements will not transmit moisture by capillary action The concrete wall formed with the system should be constructed using the specitied concrete recommended by the Certificate holder see sections S eine 11 11 2 Use of the system below ground to resist the effects ot hydrostatic head or ground water ingress has not been assessed and is not covered by this Certificate The recommendations given in BS 8102 2009 should be adopted in respect of the watertightness of the whole structure see also section 4 3 The advice of the Certificate holder should be sought on particular applications Where a type A or C basement construction is adopted suitable collector d
10. joists relative to the position of connecting assemblies They can be incorporated by following the manufacturer s details Care must be taken not to damage the elements and cold bridging effects must be considered 20 Finishing Backfilling 20 1 Backtilling around bottom layers of formwork to the ground floor or basement walls must not take place until the concrete structure has reached sufficient design strength as directed by the person responsible for the structural design Electrical and plumbing 20 2 Electrical and plumbing services can be fixed within the formwork by cutting chases into the EPS using a router hot wire cutter or plasterboard knife All electrical services should be ducted Any services introduced should conform to Building Regulation and Health and Safety requirements Further details on fixing methods can be obtained from the Certiticate holder Wall penetrations 20 3 Sleeves for ducts or service penetrations may be positioned within the formwork prior to concrete pouring Service entry points to basement walls should be avoided All service entry point should be sealed to prevent ingress of water dampness or vermin Internal wall finishes 20 4 A range of internal finishes can be applied or fixed directly to the system subject to fire restrictions Where conventional dry lining systems based on gypsum plasterboard are used they should be screw tixed into the CONnCrele core External wall finishes 20 5 Ext
11. second storey Fire barriers should completely seal the cavity and be chased fully into the outer formwork 9 5 Care should be taken to ensure that all detailing at junctions including external wall separating wall junctions and wall tloor junctions adequately maintains the required periods of fire resistance Any cavities formed in the completed walls or service entry points must be appropriately fire stopped and detailing around any openings provide sufficient protection to the formwork The formwork on the interior face must be discontinuous across wall tloor junctions 9 6 Reinforced concrete walls constructed trom the Firewall system elements can be assessed in accordance with BS 8110 2 1985 Table 4 6 Fire resistance values for various reinforced concrete wall thicknesses formed using the elements are given in this table Fire resistance values achievable using the systems are given in Tables 4 and 5 Alternatively if reinforced concrete walls are designed in accordance with BS EN 1992 1 1 2004 fire resistance values for various concrete wall thicknesses set out in BS EN 1992 1 2 2004 Table 5 4 can be used subject to cover and design load considerations The tabulated values do not take account of any additional protection provided by the internal and external finishes Page 9 of 16 Table 4 Fire resistant values minutes for minimum concrete core thickness for walls Firewall elements only with vertical reinforcement BS 81
12. system including its manufacture supply installation use maintenance and removal e any claims by the manufacturer relating to CE marking 23 6 Any information relating to the manutacture supply installation use maintenance and removal of this product system which is contained or referred to in this Certiticate is the minimum required to be met when the product system is manufactured supplied installed used maintained and removed It does not purport in any way to restate the requirements of the Health and Satety at Work etc Act 1974 or of any other statutory common law or other duty which may exist at the date of issue or reissue of this Certificate nor is conformity with such information to be taken as satisfying the requirements of the 1974 Act or of any statutory common law or other duty of care British Board of Agr ment tel 01923 665300 Bucknalls Lane tax 01923 665301 Watford email mail bba star co uk Herts VVD25 OBA website www bbacerts co uk Page 16 of 16
13. 2 72 to 2 77 13 2 In England Wales and Northern Ireland completed buildings are subject to pre completion testing for airtightness in accordance with the requirements of zp 4 of Mandatory Standard 6 2 clause 6 2 5 Alternatively where a default design value of 15 m m h at A 13 3 In Scotland completed dwellings are subject to testing air permeability in accordance with the requirements 50 Pa is stated in demonstrating compliance under Mandatory Standard 6 1 testing is not required 14 Sound insulation 14 1 In England and Wales separating walls are subject to pre completion testing in accordance with 53 amp Approved Document E Section 1 A similar approach is described in the Scottish Building Standards section 5 1 20 and the Building Regulations Northern Ireland Document G 14 2 Internal walls and walls flanking separating walls in new dwellings and rooms for residential purposes should have a minimum mass per unit area excluding finishes in excess of 120 kg m gt 14 3 Separating walls with a concrete core density greater than 2200 kg m and thickness of 200 mm will 7 achieve a minimum mass per unit area for the core of 415 kg m and can contribute to providing the requirements ot Approved Document E Section 2 15 Maintenance and repair Minor repairs to the formwork can be carried out prior to concrete pouring using expanded foam to reduce zia leakage of wet concrete and maintain the thermal
14. Beco Products Ltd BBR A NE PECTION Atherton Way CERTIFICATION NGG TECHNICAL APPROVALS FOR CONSTRUCTION North Lincolnshire mig pen 653844 Fax 01724 747579 Ag rement Certificate el ax e mail info becowallform co uk 14 5083 website www becowallform co uk Product Sheet 1 BECO CONCRETE FORMWORK SYSTEMS BECO WALLFORM INSULATING CONCRETE FORMWORK SYSTEM This Agr ment Certificate Product Sheet relates to the Beco Walltorm Insulating Concrete Formwork System comprising expanded polystyrene EPS moulded elements for use in the formation of loadbearing and nonloadbearing internal external separating walls to provide thermal insulation in residential and commercial buildings of similar occupancy 1 Hereinafter referred to as Certificate CERTIFICATION INCLUDES e factors relating to compliance with Building Regulations where applicable e factors relating to additional non regulatory information where applicable independently veritied technical specification assessment criteria and technical investigations design considerations installation guidance regular surveillance of production formal three yearly review KEY FACTORS ASSESSED Structural performance the system components have adequate strength to resist the loads associated with installation loading see section 6 Thermal performance the system contributes to the overall thermal performance of the wall construction see section 7
15. al transmittance as will chasing into the EPS for services Therefore tor other constructions specitic thermal calculations will need to be carried out in accordance with BS EN ISO 6946 2007 to determine U values 7 The thermal performance of each building incorporating the forms must be evaluated in accordance with the relevant national Building Regulations and is the responsibility of the overall designer of the building 7 4 Junctions with other elements should be designed to limit heat loss Detailed guidance for junctions and on limiting heat loss by air intiltration can be found in England and Wales Approved Documents to Part L and for new thermal elements to existing buildings Accredited Construction Details version 1 0 for new build see also SAP 2009 Appendix K and the iSBEM User Manual Scotland Accredited Construction Details Northern Ireland Accredited Construction Details version 1 0 1 Flexible approaches on existing buildings are given in the Technical Handbooks 8 Risk of condensation Surface condensation 4 Interstitial condensation 8 1 External walls will adequately limit the risk of surface condensation Openings in walls and junctions with other elements designed in accordance with the relevant guidance given in section 11 will also be acceptable 8 2 Subject to the construction used and amount of vapour being produced the risk of interstitial condensation will be minimal A
16. ced concrete and 0 9 metre in height tor unreintorced walls The total daily pour height must not exceed 3 metres 17 5 For unreintorced walls compaction of the concrete by hand tamping or rodding is adequate For reinforced walls mechanical compaction should be employed using external pad or poker vibrators not exceeding 25 mm diameter as the formwork elements are easily damaged 17 6 Where required additional reinforcement can be placed within the system and quantities are dependent on design and detail requirements see section 6 Horizontal reintorcement can be placed in ditterent locations across the concrete fill void using the EPS webs or wire ties as temporary support Vertical reinforcement can be placed against the horizontal reintorcement and secured using standard fixing methods Bar lapping lengths in accordance with BS EN 1992 1 1 2004 or BS 8110 1 1997 should be adopted All reinforcement should be accurately positioned to ensure that the minimum required cover to the concrete is provided Starter or dowel bars may be recommended depending on reinforcement requirements or engineer s specification Ties should not be cut or modified when locating reinforcement The use of steel fibres as an alternative to standard reinforcement bar or mesh has not been assessed by the BBA If used it must be subject to approval of the person responsible in the building design Page 11 of 16 17 7 The concrete can be placed in freezing conditions a
17. concrete into the formwork 1 3 The range of elements also include curved blocks lintel block floor edge block height adjuster end set and end piece The Certificate holder scan be contacted for further details 1 4 The expanded polystyrene EPS used in the elements has the properties given in Table 2 Table 2 EPS properties Property Test method Value to BS EN 13163 2008 Estimated thermal conductivity lambda 999 value VWV m7 K BS EN 12667 2001 0 038 Compressive strength at 10 deformation kKN m BS EN 826 1996 150 Bending strength kN m Bo EN 12089 1997 200 Density kg m BS EN 602 2004 28 1 5 The concrete infill is sourced trom QSRMC registered or a BSI Kitemarked batching plant or supplier and must be of the specification defined in Table 3 All concrete design for above and below ground construction must be carried out fo relevant British or European Standards The Certiticate holder recommends a use of pumpable grade concrete 1 Quality Scheme for Ready Mixed Concrete Table 3 Recommended concrete specification and characteristics Characteristic units Specification unreinforced C4595730 reinforced C35 745 Minimum density kg m 2200 Minimum mass kg m 415 Slump class 53 Target slump mm 100 150 Maximum aggregate size mm Pumped 10 Free flow lt 20 Minimum cement content kg m 300 Water cement ratio detined by structural engineer 1 In accordance with BS EN 206 1 2000 an
18. culations BS 4449 2005 Steel for the reinforcement of concrete Weldable reinforcing steel Bar coil and decoiled product Specitication BS 5975 2008 A1 2011 Code of practice for temporary works procedures and the permissible stress design of falsework BS 8000 2 1 1990 Workmanship on building sites Code of practice for concrete work Mixing and transporting concrete BS 8007 1987 Code of practice for design of concrete structures for retaining aqueous liquids BS 8102 2009 Code of practice for protection of structures against water from the ground BS 8110 1 1997 Structural use of concrete Code of practice for design and construction BS 8110 2 1985 Structural use of concrete Code of practice for special circumstances BS 8212 1995 Code of practice for dry lining and partitioning using gypsum plasterboard BS 8298 1 2010 Code of practice for the design and installation of natural stone cladding and lining General BS 8298 2 2010 Code of practice for the design and installation of natural stone cladding and lining Traditional handset external cladding BS 8298 3 2010 Code of practice for the design and installation of natural stone cladding and lining Stone faced pre cast concrete cladding systems BS 8500 1 2006 Concrete Complementary British Standard to BS EN 206 1 Method of specifying and guidance for the specitier BS EN 206 1 2000 Concrete Specification performance production a
19. d 6 6 With respect of concrete placement and especially regards any use of poker vibration for compaction of wet concrete see also section 17 5 the Beco Wallform Insulating Concrete Formwork Technical Manual must be consulted 6 7 When the formwork is used to construct a watertight basement not covered by this Certificate an effective waterproofing should be employed ensuring correct detailing and jointing methodology to the Certificate holder s instructions and the requirements of BS 8102 2009 for Types A and C basement construction 6 8 Generally facing brickwork or stonework should be attached using suitable wall ties that are fixed through the formwork and into the concrete core with suitable fixings see section 1 7 to the depth recommended by the wall tie manufacturer 6 9 Heavy attachments or finishes fixed either internally or externally must be attached via support systems designed to take account of the applied load using suitable fixings or plates fixed or cast into the concrete core The EPS must not be used to support any internal or external loads Strength and stability f 6 10 Walls constructed using the formwork may be treated as conventional unreinforced plain concrete or 53 d reinforced concrete walls Particular attention should be made to the type of concrete mix used see Table 3 to ensure segregation does not occur and the wet concrete is allowed to flow treely around formed openings and through congested ar
20. d BS EN 12350 2 2000 1 6 Where admixtures are used to assist placement they should comply with BS EN 934 2 2001 or BS EN 480 1 2006 Page 6 of 16 1 7 Other components and finishes specified for use with the system but not assessed or covered by this Certificate are e wall foundation e steel reinforcement where required should comply with BS 4449 2005 and sourced trom a CARES UK Certification Authority for Reinforcing Steels registered supplier e external masonry may be of brickwork or stonework fixed in accordance with the provisions of BS EN 1996 1 2 2005 or the appropriate part of BS 8298 2010 respectively e external render in accordance with BS EN 13914 1 2005 and suitable for use with the system e acrylic render suitable acrylic render products in accordance with BS EN 13914 1 2005 for use with the system e brick slip systems third party certificated systems the Certificate holder s advice should be sought e brickwork stonework ties to BS EN 845 1 2003 e fire barriers propping support system as recommended by the Certificate holder e basement waterproofing membrane e plasterboard internal linings to BS EN 520 2004 and BS 8212 1995 2 Manufacture 2 1 The formwork elements are manufactured from expanded polystyrene EPS 2 2 As part of the assessment and ongoing surveillance of product quality the BBA has e agreed with the manufacturer the quality control procedur
21. e cut to suit 19 5 Window and door openings see Figure 2 are formed and trimmed during construction of the formwork and framed using specific formwork lintel elements and end pieces Openings should be made slightly undersize then trimmed after the concrete has been cured to obtain an accurate opening size and avoid the need for supplementary packing All openings and lintels formed as part of the construction works must be adequately braced and supported until the concrete has attained its minimum design strength 19 6 It is essential that effective bracing and propping of walls takes place during construction to ensure stability level straightness and plumb of walls The Certificate holder can advise on the provision of propping systems 19 7 Asa minimum the full height of the assembled formwork must be supported at comers and along the wall lengths with bracings at a maximum 1 5 metre centres As the rigidity of the formwork is reduced by openings additional bracing and propping must be introduced to maintain stability during concrete pouring Concrete placement 19 8 Prior to concrete pouring a check is carried out on the system to ensure conformity to design and layout correct alignment and plumb and that bracings and props are secured Reinforcement should be checked for correct cover distance and rigidity Where reintorcement is only provided above openings the individual bars should extend at least 500 mm beyond the opening span
22. e system can adequately limit the risk of moisture ingress from the ground See section 11 1 of this Certificate Regulation 29 Condensation Comment Walls formed trom the system can contribute to minimising the risk of interstitial condensation See sections 8 1 and 8 2 of this Certiticate Regulation 30 Stability Comment Walls formed from the system will have adequate strength and stiffness to satisfy this Regulation See Seclions 2 101O 4 On cancion onic eninece Regulation 31 Disproportionate collapse Comment Walls when suitably reinforced will have adequate strength and stiffness to satisfy this Regulation See sections 6 2 to 6 4 6 10 and 6 11 of this Certificate Regulation 35 Internal fire soread Structure Comment Walls tormed trom the system can satisty this Regulation See sections 9 2 to 9 7 of this Certificate Regulation 39 a i Conservation measures Regulation 40 2 Target carbon dioxide Emission Rate Comment The system can satisfy or contribute to satisfying this Regulation See sections 7 1 to 7 4 13 1 and 13 2 of this Certificate Regulation 49 Resistance to the passage of sound Regulation 50 a b Protection against sound within a dwelling or room for residential purposes Regulation 51 Reverberation in the common internal parts of a buildings containing flats or rooms for residential purposes Comment The system can satisty this Regulation See sections 14 1 and 14 2 of this Certificate
23. eas of reinforcement 6 11 The nominal concrete cover to reinforcement should be that appropriate to exposure classes XO and XC 1 described in BS 8500 1 2006 Table A 1 and BS EN 206 1 2000 Table 1 6 12 To achieve a structurally stable formwork during the construction process the formwork must be braced sufficiently to resist the loads imparted on the system by the wet concrete and other construction loads A typical system of temporary bracing should be designed to give lateral support during the pouring of the concrete and curing stage The Certificate holder recommends that propping is provided at maximum 1 5 metre centres or less when openings are formed in the wall All soffits to openings should be fully supported until the concrete has attained the minimum required strength Page 8 of 16 7 Thermal performance 4 7 2 Calculations of the thermal transmittance U value of a specific wall construction should be carried out in accordance with BS EN ISO 6946 2007 and BRE report 443 2006 using an estimated lambda 9 9 value thermal conductivity of 0 038 W mr K1 7 3 Asan example using the Standard Wallform 313 117 5 mm outer face and 55 mm inner face with 10 mm directly applied external render finish and 12 5 mm directly applied plaster internal finish can achieve a U value of 0 206 W m K Other wall constructions that require internal and external finishes to be fixed into rails or concrete core will affect the therm
24. erials and products Hygrothermal properties Tabulated design values BS EN 12667 2001 Thermal performance of building materials and products Determination of thermal resistance by means of guarded hot plate and heat flow meter methods Products of high and medium thermal resistance BS EN 13914 1 2005 Design preparation and application of external rendering and internal plastering External rendering BS EN ISO 6946 1997 Building components and building elements Thermal resistance and thermal transmittance Calculation method ETAG 009 2002 Non loadbearing permanent shuttering kit systems based on hollow blocks or panels of insulating materials and sometimes concrete Page 15 of 16 Conditions of Certification 23 Conditions 23 1 This Certificate e relates only to the product system that is named and described on the front page e is issued only to the company firm organisation or person named on the front page no other company firm organisation or person may hold or claim that this Certificate has been issued to them e is valid only within the UK e has to be read considered and used as a whole document it may be misleading and will be incomplete to be selective e is copyright of the BBA e is subject to English Law 23 2 Publications documents specifications legislation regulations standards and the like reterenced in this Certificate are those that were current and or deemed rel
25. ernal cladding must be supported by means of a system compatible with the specified cladding and the Walltorm construction Masonry systems may be supported by wall ties cast into the concrete core of the wall curtain wall timber or panel claddings may be supported by batten and rail systems pinned back to the concrete core Render Systems described in section 1 7 can be applied directly to the EPS surface in conjunction with metal or plastic lathing and suitable fixings Further details can be obtained trom the Certificate holder 21 Tests Site observations were carried out in broad accordance with the requirements ot ETAG O09 2002 as part of normal construction under site conditions Hydrostatic pressures in excess of the restrictions imposed in this Certiticate see section 6 5 resisted the wet concrete indicating an adequate factor of safety when installed in accordance with this Certificate The efficiency of tilling using a line pump and the overall stability of formwork due to head of wet concrete was also noted 22 Investigations 22 1 A site visit was carried out to witness the installation process including construction of formwork placement of reintorcement and pouring of concrete and overall pertormance of the formwork 22 2 An assessment was made on technical data relating to e thermal performance e Acoustic performance e Fire performance Page 14 of 16 Bibliography BRE report 443 2006 Conventions for U value cal
26. es and product testing to be undertaken e assessed and agreed the quality control operated over batches of incoming materials e monitored the production process and verified that it is in accordance with the documented process e evaluated the process for management of nonconformities e checked that equipment has been properly tested and calibrated e undertaken to carry out the above measures on a regular basis through a surveillance process to verity that the specifications and quality control operated by the manufacturer are being maintained 3 Delivery and site handling 3 1 Good site practice should be observed to prevent damage to the formwork elements 3 2 The system elements are supplied to site interlocked with corner protection pieces in taped or shrink wrapped packs All packaged elements are clearly labelled with product type and code number allowing full traceability of supply The wrapping should not be opened until the contents are required 3 3 The formwork elements must be stored in their packaging on firm level and dry ground If stored outside packs must be further protected from the weather using opaque plastic sheeting or tarpaulin 3 4 Care must be taken when handling the EPS elements to avoid damage and contact with solvents or materials containing volatile organic components such as newly treated timber The elements must not be exposed to open flame or other ignition sources Assessment and Technical Investigations
27. evant by the BBA at the date of issue or reissue of this Certificate 23 3 This Certificate will remain valid for an unlimited period provided that the product system and its manufacture and or fabrication including all related and relevant parts and processes thereof e are maintained at or above the levels which have been assessed and found to be satisfactory by the BBA e continue to be checked as and when deemed appropriate by the BBA under arrangements that it will determine e are reviewed by the BBA as and when it considers appropriate 23 4 The BBA has used due skill care and diligence in preparing this Certificate but no warranty is provided 23 5 In issuing this Certificate the BBA is not responsible and is excluded trom any liability to any company firm organisation or person for any matters arising directly or indirectly trom e the presence or absence of any patent intellectual property or similar rights subsisting in the product system or any other product system e the right of the Certificate holder to manufacture supply install maintain or market the product system e actual installations of the product system including their nature design methods performance workmanship and maintenance e any works and constructions in which the product system is installed including their nature design methods performance workmanship and maintenance e any loss or damage including personal injury howsoever caused by the product
28. integrity of the EPS 16 Durability f Concrete walls constructed with the system will have a service life of not less than 60 years provided they are 7 amp designed in accordance with section 6 The formwork system elements will have a similar service life provided it is protected trom damage by the external and internal finishes of the wall construction constituting a mild exposure environment and these are adequately maintained 17 General 17 1 Installation of the Beco Walltorm Insulating Concrete Formwork System is carried out in accordance with the Certificate holder s installation instructions by trained approved or supervised operatives and the requirements of BS 5975 2008 and BS 8000 2 1 1990 Continuous supervision during placing and compacting of the concrete must be provided Where required the formwork elements can be cut using conventional woodworking tools 17 2 Attention is drawn to the need for accurate levelling of the foundation and initial setting out of adjustments to be made 17 3 In general concrete should be placed by line pump and nozzle although small quantities of concrete e g to window sills can be placed by hand As an alternative crane and skip can be employed 17 4 Concrete must be compacted in accordance with the requirements of BS EN 1992 1 1 2004 or BS 8110 1 1997 Concrete placement must not exceed a flow rate of 12 m3 h7 in passes not exceeding O 5 metre in height for reinfor
29. l 01923 665300 Bucknalls Lane e O oa l Watford email mail bba star co uk Herts VVD25 OBA website www bbacerts co uk Page of 16 Regulations In the opinion of the BBA the Beco Wallform Insulating Concrete Formwork System if installed used and maintained in accordance with the provisions of this Certificate will meet or contribute to meeting the relevant requirements of the following Building Regulations the presence of a UK map indicates that the subject is related to the Building Regulations in the region or regions of the UK depicted l i 5 Requirement Requirement Requirement Comment Requirement Comment Requirement Comment Requirement Comment Requirement Requirement Comment Requirement Comment Regulation Comment Regulation Comment Al A2 A3 B3 1 2 3 C2 a C2 c E E2 a L1 a i The Building Regulations 2010 England and Wales as amended Loading Ground movement Disproportionate collapse Walls formed from the system will have adequate strength and stiffness to satisfy these Requirements See sections 6 1 to 6 4 6 10 and 6 11 of this Certificate Internal fire spread structure Walls formed from the system can meet this Requirement See sections 9 2 to 9 7 of this Certificate Resistance to moisture Walls formed from the system can adequately limit the risk of moisture ingress from the ground See section 11 1 of this Ce
30. nd conformity BS EN 480 1 2006 Admixtures for concrete mortar and grout Test methods Reference concrete and reference mortar for testing BS EN 520 2004 Gypsum plasterboards Definitions requirements and test methods BS EN 602 2004 Aluminium and aluminium alloys Wrought products Chemical composition of semi finished products used for the fabrication of articles for use in contact with foodstuff BS EN 826 1996 Thermal insulating products for building applications Determination of compression behaviour BS EN 845 1 2003 Specification for ancillary components for masonry Ties tension straps hangers and brackets BS EN 934 2 2001 Admixtures for concrete mortar and grout Concrete admixtures Definitions and requirements conformity marking and labelling BS EN 1991 1 4 2004 Eurocode Actions on structures General actions Wind actions BS EN 1992 1 1 2004 Eurocode 2 Design of concrete structures General rules and rules for buildings BS EN 1992 1 2 2004 Eurocode 2 Design of concrete structures General rules and rules for buildings General rules Structural tire design BS EN 1996 1 2 2005 Eurocode 6 Design of masonry structures General rules Structural fire design BS EN 12089 1997 Thermal insulating products for building applications Determination of bending behaviour BS EN 12350 2 2000 Testing fresh concrete Slump test BS EN 12524 2000 Building mat
31. ng walls formed from the system satisfy these Standards with reference to clauses 5 1 1012 UNA Sy PANE S A Se a MeN inte S 2 ANAS Sei secon 40 telrel 402 inis Certificate Page 2 of 16 Standard 6 1 b Carbon dioxide emission Standard oF Building insulation envelope Comment The system will enable or contribute to enabling a wall to meet these Standards with reference to clauses Cems ANG loo 2 Nee SIN se 2 ANG 2 Slo DO ancliO 27 see scciions PO A 3 1 emel 13 3 erilis Ceariinesie Standard 7 a b Statement of sustainability Comment The system can contribute to meeting the relevant Requirements of Regulation 9 Standards 1 to 6 and therefore will contribute to a construction meeting a bronze level of sustainability as defined in this Standard In addition the product can contribute to a construction meeting a higher level of sustainability as detined in this Standard with reference to clauses 7 1 4012 Aspects 12 and 20 7 1 602 Aspects 11112 and 210 and 7 1 7012 Aspect 1012 See sections 7 1 to 7 4 of this Certificate 1 Technical Handbook Domestic 2 Technical Handbook Non Domestic 5 Regulation 23 a i iii b Fitness of materials and workmanship iA The Building Regulations Northern Ireland 2012 Comment The system is acceptable See section 16 and the Installation part of this Certificate Regulation 28 a b Resistance to moisture and weather Comment Walls formed from th
32. ny vapour build up will be low and will dissipate during the summer months Therefore a vapour check is not required For the purposes of calculating condensation risk a water vapour resistance factor p of 60 in accordance with BS EN 12524 2000 may be taken for the EPS 9 Behaviour in relation to fire 9 1 The Firewall system elements must be used in the construction of separating walls The provisions set out in 55 sections 9 7 and 9 8 should be taken into account when using the Standard system elements ie with EPS webs finishes can satisfy the required durations of tire resistance and therefore may be used in separating walls VVhere external walls are one metre or less from a relevant boundary the construction should comply with the relevant exceptions on the use of combustible materials permitted by the guidance supporting the Building Regulations in Scotland A EPS is combustible so the risk of fire spread over the internal wall surface will depend on the finishes that Bin The formwork elements are combustible For buildings in Scotland completed walls with appropriate 53 are used and the relevant requirements of the national Building Regulations should be observed 9 4 Where the system is used as part of a cavity wall construction to limit the risk of fire spread between floors in buildings subject to the Building Regulations fire barriers should be installed at each floor level above the first floor lie starting at the
33. o J J j J A a YY A Aa J J af A a 4 pre cast beam and timber joist JA lt 14 p block floor units p qI 4 q 4 J J hy P Pa A A 5 a J J J Aa A 4 A J J 4 4 R A Sie A concrete floor timber floor 18 Preparation 18 1 The preparation installation and temporary support of the formwork system must be in accordance with the Certificate holder s installation instructions 18 2 The foundation must be level smooth finished cleaned off and within a tolerance of 10 mm in any direction Any outotolerances must be made good prior to placement of formwork 18 3 When stepped foundations are required 250 mm steps should be provided wherever possible to minimise cutting of forms and wastage 19 Procedure Wall assembly 19 1 Prior to the damp proof course being laid a line of the wall to be built is first checked 19 2 Starting at the corners and working into the centre point of each wall the formwork elements are pushed firmly together using a stretcher bond format 19 3 Depending on the footing detail required the following and subsequent courses are then built up ensuring that vertical joints do not coincide End pieces are inserted into any opening sides as erection of the formwork proceeds as should any reintorcement required for structural design purposes 19 4 Where the specified storey height is not a multiple of 250 mm height adjusters may increase height in increments of 62 5 mm or alternatively the formwork can b
34. onstruction Structure Disproportionate collapse Walls formed trom the system will have adequate strength and stiffness to satisfy this Standard with reference to clauses 1 1 1 l2 to 1 1 3012 and when suitably reinforced clause 1 2 1021 See sections O 2 1 3 C4 1 0 cine Oo orins Canteens Separation Structural protection Walls can satisfy the short medium or long fire resistance durations required by this Standard with reference to clauses 2 2 1 2 2 20a 2 2 312 2 2 52 gnd 2 2 8 Junctions between walls can maintain the required fire resistance durations with reference to clauses 2 2 7 and 2 2 1000 See section 9 1 of this Certiticate The expanded polystyrene component of the wall would be classitied as combustible However the completed wall can satisty the required durations of fire resistance with reference to clauses 2 2 4 2 and 2 2 70 See sections 9 1 to 9 7 of this Certificate Moisture from the ground Walls formed trom the system can satisfy this Standard with reference to clauses 3 4 1 and 3 4 50 See section 11 1 of this Certiticate Condensation Walls formed trom the system can adequately limit the risk of surface condensation with reference to clauses 3 15 12 and 3 15 30 Walls can contribute to minimising the risk of interstitial condensation with reference to clauses 3 15 1 3 15 4 and 3 15 5 Il2 See sections 8 1 and 8 2 of this Certificate Noise separation Noise reduction between rooms Separati
35. rain and backtilling medium should be provided to eliminate the build up of hydrostatic head behind the wall where required The Certificate holder should be consulted for advice on suitable waterproofing materials and methods of waterproofing 11 3 Window and door openings and penetrations of the concrete such as pipe entries or formwork ties must also be securely sealed to maintain watertightness The advice of the Certificate holder should be sought on suitable details 12 Proximity of flues and appliances When installing the product in close proximity to certain flue pipes and or heatproducing appliances the following provisions to the national Building Regulations are acceptable England and Wales Approved Document J3 Scotland Mandatory Standards 3 18 clause 3 18 5 and 3 19 clause 3 19 40 Northern Ireland Technical Booklet L 1 Technical Handbook Domestic Page 10 of 16 13 Airtightness f 13 1 Buildings can achieve adequate resistance to heat loss by air infiltration provided there is effective sealing 5 A around junctions between units during site assembly Care should be taken to ensure that junctions with other elements and openings comply with the relevant guidance for airtightness as given in the relevant documents reterred to in section 7 4 England and Wales Approved Document L1A section 43 L2A section 20B Northern Ireland Technical Booklets F1 Sections 2 59 to 2 69 and F2 Sections
36. rtificate Resistance to moisture Walls formed from the system can adequately limit the risk of surface condensation and contribute to minimising the risk of interstitial condensation See sections 8 1 and 8 2 of this Certificate Protection against sound from other parts of the building and adjoining buildings Protection against sound within a dwelling house etc Walls formed from the system can adequately meet these Requirements See sections 14 1 to 14 3 of this Certiticate Conservation of fuel and power Walls tormed trom the system can contribute to a building meeting its Target Emission Rate See sections TF Nie A eeneh koe 2 on ince a Materials and workmanship The system elements are acceptable See section 16 and the Installation part of this Certificate CO emission rates for new buildings The system can satisfy or contribute to satisfying this Regulation See sections 7 1 to 7 4 13 1 and 13 2 of this Certificate a The Building Scotland Regulations 2004 as amended 5 Regulation Comment Regulation Standard Standard Comment Standard Standard Comment Standard Comment Standard Comment Standard Standard Comment 8 1 2 Ze 3 4 S l SZ Fitness and durability of materials and workmanship The system can contribute to a construction meeting this Regulation See sections 15 and 16 and the Installation part of this Certificate Building Standards applicable to c
37. s it will be thermally protected by insulation provided by the formwork although the temperature of the concrete being placed must be between 5 C and 30 C In air temperatures below 5 C or temperatures above 25 C the top of the formwork should be protected to aid curing atter completion of concreting 17 8 Suitably durable and mechanically adequate fixings reinforcing starter bars or support brackets must be used for all structural elements eg floors and roots see Figure 2 and must be postdrilled or cast into the concrete core The EPS elements must not be used as a structural medium Figure 2 Typical installation waterproofing additive mixed with concrete floor screed insulation ground level WIIAWIL WI YJYWY J9Y J YQYY WV floor level external render dom concrete slab ad foundation detail lintel reinforcing cap filling foam a Wallform A lt F lintel block sealant P sealant plug and screw fixing through jambs of frame sealant Wallblock insert de expanding foam Aaa
38. the system in any structure is subject to design limitations in accordance with British or European Standards Page 3 of 16 Technical Specification 1 Description 1 1 The Beco Wallform Insulating Concrete Formwork System consists of a range of elements see Figure 1 moulded trom expanded polystyrene EPS beads into inner and outer profiled panels connected by integral webs or steel wire connectors depending on function The elements are available in Standard Acoustic and Firewall grades and four system types 250 313 375 and 438 see Table 1 Figure 1 Typical standard wall elements EPS web and steel wire connector Table 1 Range of system elements Element Overall width mm Standard Wallblock 250 4 Poa eos LA LE En E E k 312 5 70 375 bo 438 3 i Firewall block 250 A m B 55 oie 375 250 ASO Acoustic block 250 capa Page 4 of 16 Width A 55 DEES 180 243 5D 117 5 180 243 J EE Height imm 250 250 250 250 250 250 250 250 200 250 Core 140 140 140 140 200 140 140 200 140 200 140 200 Length mm FIO 7507 V N25 730 Z530 230 1250 1250 1250 500 500 continued Table 1 Range of system elements continued Element Lintel block Pala eee ol a ey A a 40 55 a 181 125 sol Tf E i Floor edge block RITI A SEPALS 45 Corner Block 140 200 A J9 End block
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