How To Build Compliant Spandrel Panels-Books Pdf

How to build compliant SPANDREL PANELS
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Wyckham Blackwell, timber engineering, Since 1884, Today many builders are exploring the. efficiencies and quality benefits of pre, manufacturing and offsite construction As. part of this drive builders increasingly use, timber spandrel panels in low rise housing and. apartments, The advantages of using spandrel panels are. numerous but six key benefits stand out, The panels can be manufactured off site.
They help to improve on site safety as they Jonathan Fellingham. require less time working at height Chairman Trussed Rafter Association. They can be installed quickly, Faster installation times mean lower costs. They leave little or no site waste, Using spandrel panels can help to address. the shortage of skills on site, To ensure safe and effective working practices. this document sets out some essential guidance, on various aspects of spandrel panel design As the housebuilding industry moves evermore. construction and installation towards innovative methods of construction. it is encouraging to see the supply chain, In particular the guide aims to provide evidence embracing the challenges and ensuring that.
based consistent information on best practice products perform as expected. for spandrel panel usage in party walls above, masonry This document represents a first significant. step towards standardising this innovative, The guidance has been prepared collaboratively method of construction. by the Trussed Rafter Association and the, Structural Timber Association and in cooperation Paul Cribbens NHBC Standards Manager. with the NHBC, 01 Design p 04, 02 Structural requirements p 05. 03 Fire resistance p 09, 04 Panel construction p 10.
05 Single skin cladding p 11, 06 Weather protection p 12. 07 Safe installation p 13, For masonry separating walls Robust Details. Handbook notes in Appendix A1 Where, stated in the Robust Detail spandrel panels are. an acceptable alternative to building the cavity, separating wall in the roof space without. room in roof, Acoustic performance, Appendix A1 provides a generic spandrel panel.
specification to maintain acoustic integrity, between dwellings It recognises spandrels. need to comply with Building Regulations, Part B for fire compartments but does not. provide specific construction details such as, specifications fixing arrangements or interface. Robust Details requires both leaves of, blockwork to extend a minimum of 300mm. above ceiling and the cavity to be stopped, Information in this guide provides good.
practice examples of how these additional, issues may be addressed in terms of masonry. construction It is also important to recognise, alternative solutions have been developed. outside of Robust Details, Single piece panels, Single piece party wall spandrel panels are. recommended wherever possible in order, to minimise working at height to maintain. build quality and to ensure integrity of fire, compartments.
Before splitting a panel consider additional, blockwork course s above 300mm minimum. or increase the size or grade of members, within the softwood structural frame. 02 Structural requirements, Panel support, Party wall spandrels provide a separating. function but are non load bearing, However robust lateral connections to the. roof trusses on either side of the panel are, essential to maintain stability if the panel is.
subject to fire This is particularly important if, a fire weakens the support on one side of the. Therefore it is essential that the bottom chord, of the panel is fully supported throughout its. 02 Structural requirements, Head detail, Head restraint may be achieved through. timber bracing Requirements for the, spandrel panel head restraint are as follows. Lateral bracing at maximum two metre, Minimum bracing section 25 x 100mm.
fixed using 2 x 3 35 x 65mm galvanised, wire nails to top edge of the timber ledger. Minimum section 45 x 72mm and, minimum length 900mm. Timber ledger screw fixed with minimum, 100mm long screws to at least two. vertical studs within the panel, Lateral bracing to be fixed to a minimum. of three trusses Note 3 1mm machine, nails may be used in lieu of 3 35mm.
standard wire nails, Spandrel head at a minimum of 50mm. below the truss head, 60mm layer of mineral wool placed. below the underlay felt as a fire stop, Fireproofing should continue into any. boxed eaves, Tiles positioned on BS 5534 battens, 60mm layer of mineral wool quilt placed. above underlay felt and laid between, battens from eaves to ridge.
02 Structural requirements, Alternative head, Head restraint may also be achieved through. metal restraint straps Requirements for the, spandrel panel head restraint are as follows. Lateral bracing to be fitted at apex and, along rafters and ceiling joists maximum. two metre centres no more than 1 25m, centres for dwellings over three storeys or. over two storeys in Scotland, Minimum 38mm x 63mm noggings fixed.
between at least three trusses, Metal restraint strap fixed to noggings. with eight 3 75mm x 30mm square, twisted nails evenly spaced. End of metal restraint strap to be screw, fixed to studwork within spandrel with. minimum 65mm long screws, Spandrel head at a minimum of 50mm. below the truss head, 60mm layer of mineral wool placed.
below the underlay felt as a fire stop, Fireproofing should continue into any. boxed eaves, Tiles positioned on BS 5534 battens, 60mm layer of mineral wool quilt placed. above underlay felt and laid between, battens from eaves to ridge. 02 Structural requirements, Foot detail, Requirements for the base of the spandrel. panel are as follows, Blockwork must provide continuous support.
to the bottom edge of the panel at a, minimum of 300mm above ceiling. This may extend higher to allow for full, height courses single piece panels or to. minimise thermal bridging, A level finish free of excess mortar is. Cavity sealed with a flexible fire stop, The example in Robust Details Handbook. Appendix A1 shows timber sitting directly, on blockwork with flexible sealant between.
board lining and blockwork, Bottom edge of the panel sealed with. compressible mineral wool fibre pad, This is both visible for inspection and. able to fill any gaps due to tolerances, between the supporting masonry wall. and spandrel panel, Holding down straps are necessary. to ensure the panel can resist lateral, Straps at 1200mm centres face.
fixed to coincide with alternate stud, The strap length should ensure two. good screw fixings into the panel, framework 65mm screws and a. minimum of three plug and screw, fixings into at least two blocks. 03 Fire resistance, Panel connections, According to the calculation method in Annex. E of BS EN 1995 1 2 joints in the dry lining, do not influence the separating performance.
of the wall if they are backed with a batten or, a structural element. If the joints aren t backed in one of these, ways a reduction factor must be applied as. per Clause E2 1 1, If the installation of a single piece party wall. spandrel panel is not possible and joints, between panels are necessary the vertical. joint shown in the illustration opposite is an, example of a joint currently in use.
In this example the panels are butt jointed, and covered by cover strips which are site. applied and designed to replicate cladding, over the joint. The cover strip minimum width is 150mm, fixed to both studs using fixings and. schedule as per the original cladding, For twin cladding layers the joints must be. staggered and be positioned directly over, Plasterboard screw fixings into 47mm studs.
should penetrate the timber by a minimum, of 25mm The standard fixing pattern for. plasterboard into timber is 300mm max centres, It is recommended that each cover strip is. fixed independently and the screw fixings, are staggered between layers Any joints in. the two layers of cover strip should also be, 04 Panel construction. Building the frame, The requirements for building spandrel panels.
are as follows, Softwood structural frame with vertical. studs at 600mm centres, Minimum section size 47 x 72mm where. joints are plated and 38 x 89mm where, joints nailed. The orientation illustrated is 47 x 72mm, shown vertical for plating When nailed the. section will be orientated flatwise, Cladding to provide 60 minute fire.
resistance as specified in Approved, Document B1 of Building Regulations. A two layer 12 5mm dry lining with each, layer staggered 600mm horizontally and. vertically, Fixed in accordance with the dry lining. manufacturer s specification Or other twin, or single cladding solutions to achieve a. Structural integrity 60 minute fire rating and required acoustic. performance, Engineering to be supported by design.
software and structural calculations to, confirm the structural integrity of the. panel during delivery crane handling and, site installation This includes nailed joint. specifications, Panels are supplied with factory fitted. weight tested lifting straps suitable for, the condition in which they are delivered. Weight to be clearly marked on the panel, Offsite manufacture is subject to third.
party accredited quality assured Factory, Production Control. 05 Single skin cladding, Spandrel timber construction. fermacell Gypsum Fibreboard is an example, of a single skin cladding solution for spandrel. panels Single layer of fermacell, Gypsum Fibreboard on. One 15mm sheet of fermacell can replace either side of spandrel. two sheets of plasterboard on either side, of the panel to achieve the fire and acoustic.
requirements of a spandrel panel, fermacell key features. Provides 60 minute fire protection when, tested to BS 476 pt 22 1987. Meets acoustic requirements as referenced, in Annex A1 of Robust Details Handbook. Resistant to moisture penetration and, impact damage meaning plastic wrapping. is not needed on site, Can be used with nail plated or nailed.
fermacell cladding may be fixed with Spandrel panel joint details. fermacell screws or galvanised staples, Within a panel tight dry butted joints. between fermacell sheets formed over Discover all the benefits and. studs are standard with no need for further, treatment technical specs of fermacell single. Where required individual panels may be skin cladding for spandrel panels. jointed on site using the method shown in, the drawing opposite. Learn more at, www fermacell co uk TRASpandrel, 06 Weather protection. Choice of cladding, The choice of cladding material and the.
planned time between delivery and roof, covering will determine the weather protection. required for the panel, It will also determine the amount of work at. height required on site to allow for the removal, of the weather protection. Cladding such as plasterboard will always need, full weather protection Protective materials. must be removed or vented once the roof, covering is complete.
A more robust form of cladding with sufficient, moisture resistance eliminates the need for. additional site operations to remove weather, protection thereby reducing work at height. risks and improving site safety, 07 Safe installation. Installer obligations, Installers and contractors must provide full. site specific risk assessments and method, statements for the safe installation of party.
wall spandrel panels, Further information on the safe unloading of. spandrel panels on site can be found at the, TRA website. Visit our website for more information, tra org uk. The Building Centre, 26 Store Street, T 020 3205 0032. E info tra org uk, The latest version of this guide can be.
downloaded online at tra org uk, All information is correct at the date this. guide was produced We reserve the right to, make technical changes at any time. Spandrel panel joint details Spandrel timber construction Single layer of fermacell Gypsum Fibreboard on either side of spandrel 05 Single skin cladding fermacell Gypsum Fibreboard is an example of a single skin cladding solution for spandrel panels One 15mm sheet of fermacell can replace two sheets of plasterboard on either side of the panel to achieve the fire and acoustic requirements of a

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