Case Study Examples of Innovate Building Technologies
Professor Sean SmithDirector – Institute for Sustainable Construction
Professor of Construction Innovationwww.napier.ac.uk/isc
LCBE Seminar27th January 2011
ISC – Directors and Heads of Centres
Building Performance Centre (BPC)
Centre for Regeneration & Re-Use of Buildings (CRRB)
Centre for Geotechnics (CG)
Centre for Sustainable Communities (CSC)
Centre for Offsite Construction & Innovative
Structures (COCIS)
Scottish Energy Centre (SEC)
Richard Mackenzie (BPC - Director)[email protected]
Dr John McDougall (CG - Head of Centre)[email protected]
Prof Mark Deakin (CSC - Head of Centre)[email protected]
John Currie (SEC - Head of Centre)[email protected]
Dr Robert Hairstans (COCIS - Head of Centre)[email protected]
Frazer Hay (CRRB - Head of Centre)[email protected]
INSTITUTE for SUSTAINABLE CONSTRUCTION
Prof Sean Smith (Institute Director)[email protected]
ISC
Centre for Infrastructure Research (CISR)
Prof Brian Sloan (CISR - Head of Centre)[email protected]
Low Carbon BUILT ENVIRONMENT
LCBE Innovation DEN
GREEN Dragon’s Den
Contact - Laura Birrell (BRE SCOTLAND)
Low Carbon Building Technologies Gateway
PROJECT
Funded via SFC SPIRIT Award, Scottish Enterprise and ERDF
3 years support for SME’s and product innovation for future low carbon housing
Linked with Scottish Innovation Parkat Ravenscraig
Primarily focused in timber frame housing – BUT related to any product utilised in build (ext. walls, foundations, hybrid systems)
CONTACT:Dr Elena [email protected]
A joint project of seven Scottish universities that supports collaboration between academia and Scottish small to medium size enterprises in developing innovations for sustainable building design and refurbishment through: • Feasibility studies and academic consultancy• Advice and assistance• Seminars, webinars and online conferences• Quarterly online magazine Innovation Review
www.cicstart.org
CASE STUDIES
Bridgestop Never say never!
DCR Reactive solution for regulation clash
AWS The Widget - workmanship-build driven
Wallcap Triple function product
ISC Innovations and New Products (examples)
RD-DCR Innovative restraint To avoid disproportionate collapse in multi- storey frame buildings
ITW-Cullen AWSAcoustic wall strapEnhanced acoustic performance, twice the structural strength, 30% less steel, improved build tolerances
WALLCAPReduces cavity convected heat loss, improves sound insulation and air tightness
Icopal BridgestopSolution for brownfield sites saving 20% on substructure costs and substantial environmental benefits
Bridgestop
A system solution – challenging the conventional
Key words: raft foundations, sound insulation, continuous floor slabs, mortar collection, acoustic bridging, radon barriers
Originally Developed by: Edinburgh Napier University(R.S. Smith & J.B. Wood)
Industry Development Partners:Icopal Monarfloor and Centex - Fairclough Homes (Paul Flynn)
Research and Knowledge Transfer
Research and Knowledge Transfer
Research and Knowledge Transfer
Bridgestop
BackgroundHistorically regulations and building standards stated “don’t do”Industry demand led
Solution for brownfield sites – applicable to over 75% sitesInitial idea developed by Edinburgh Napier expertsInitial partnership with product manufacturer and developer
Key “train journey to Manchester”Patent filed by manufacturer “recognition of 3 party partnership”
License between University and manufacturerWas it buildable? Would it work?
Bridgestop
R&D DevelopmentApplying existing technologies to different “technical market”Small scale testingNeed for test trial sitesDiverse materials tested
Product Development – drawing board to siteInitial test trials very strongly linked to buildability, material thickness and workmanship
New product development manager arrives bringing offsite skills factors, process and marketing acumen
First full scale test site of new system produces high performing results
Bridgestop
Growth FactorsEvidence – performance and costs benefitsAlerted industry product organisation (CBA) to benefits to them using systemMajor housebuilder so impressed with first full scale site trials – asked head of procurement to do a national dealSecond housebuilder does costs comparisons and finds more cost savingsAchieves highest credits for Code for Sustainable Homes (1st 4 credit wall for CfSH Section 7: Health and wellbeing)Achieves Robust Details status – appears in RD handbook – now accessed by 8,000 specifiers – almost stronger than a patent!!
Recognition – shortlisted for Housing Innovation Product of the Year 2009Led to greater partnership and suite of new products
Bridgestop
Recognition
Shortlisted for:Housing Innovation Product of the Year 2009
Led to greater partnership and suite of new products
AcknowledgementsIcopal – Monarfloor Scott Carr, Lee Nichols and Paul Levie
Paul Flynn
Major housebuilders, Architects, RD Ltd and Developers who specify Bridgestop
Edinburgh Napier – Cullen Building Products Partnership
DCR – Disp. Collapse Restraint
Regulation Clash – time critical innovation
Key words: disproportionate collapse, timber frame apartments, 5 storey structures, sound insulation, structural restraint
Originally Developed by: Edinburgh Napier University (R.S. Smith & A. Kermani)
Industry Development Partners:ITW- Cullen Building Products (Scott McAndrew)
DCR – Disp. Collapse Restraint
Background
5 storey timber frame site – strange test resultsInvestigation finds joists on hangers – not built in joists
Change in design was due to new structural requirements for 5 storeys or moreAvoidance of disproportionate collapse
Multiple 5 storey sites being built shortlyClash between Structure and Noise regulations
Industry needed solution ASAP!
DCR – Disp. Collapse Restraint
R&D DevelopmentSolution combining structural engineering and sound insulation expertise
Original design developed in 20 minutes
Needed to find manufacturer partner quickly
University approached Cullen Building Products in Fife (UK leaders in structural connectors with 70% market share)
Inventors: Edinburgh Napier University(R.S. Smith & A .Kermani)
DCR – Disp. Collapse Restraint
Product Development – drawing board to site
Initial design given to Cullens (Scott McAndrew)2nd stage product with revisions for tooling and design changes – 3 days laterFirst small scale prototype tests undertaken within 10 daysTooling established with full site instructions 3 weeks laterOn site within 6 weeks
Acknowledgements
Cullen Building Products (now part of ITW UK)Doug Cullen, Scott McAndrew and Jonny Bell
Timber Frame Manufacturers
RD-DCR
AWS – Acoustic Wall Strap
Background
Widget design approach
Min 50mm cavities in party walls not being built correctly
Often less than 50mm leading to failure in PCT sound insulation of party walls
Structural racking and rigidity of party walls also important
Performance and workmanship driven
AWS – Acoustic Wall Strap
Elongated structural pathway – 50mm appears like 75mm
Wings – maintain min. 50mm – act like spacer during site erection
Easily mountable with inbuilt stiffeners
AWS – Acoustic Wall Strap
R&D DevelopmentCullen-Napier PartnershipInventors: R.S. Smith, R.K.T. Mackenzie, S. McAndrewSmall scale structural tests3 meetings over 8 weeks
Produced in sizes for future market trends 50mm, 65mm and 75mm widths
Growth DriversCfSH (England) driverSection s 1 & 5 (Scotland)Future Section 7: Scotland
WALLCAP
BackgroundImproved air tightness requirements
Camber in precast slabs
Reduce flanking sound transmission at wallhead floor slab junctions
Reduce cavity convected heat loss
Application to Scottish Enterprise “Proof of Conecpt”
Awarded first PoC for Construction in Scotland
Performance driven
WALLCAP
R&D Development
Built test buildings at BPAC HANGAR 17
Stage 1 - Blockwork apartment buildings
Stage 2 - Timber frame apartment buildings
WHY Hangar 17?
Difficult to maintain concept development confidential on real sites
Time required for full R&D assessment
Better control of project planning, changes required and analysis
Cavity convected heat loss
Party wall cavity convected heat loss
Blockwork Apartment Test Buildings (BPAC)
4 5 6
1 2 3
Timber Frame Apartment Test Buildings (BPAC)
Cavity fire sock (horizontal)Example of heat loss past a horizontal cavity fire stop
Example of new membrane reducing cavity convected
heat loss
Icopal WALLCAP
WALLCAP
Growth FactorsEvidence – performance and costs benefitsEase of installationMultifunction productLeeds Met – Stamford Brook Project
Now written into ENERGY Building regulations Part L (E&W) and Section 6 (Scotland) 1st October 2010
“Effective cavity edge seal”
Essential product to assist with achieving Section 5 (Noise) news standards for sound insulation
Recognition Shortlisted for Housing Innovation Product of the Year 2010Can be used in RD Cavity walls
Edinburgh Napier UniversityInstitute for Sustainable Construction (ISC)
Awarded to Edinburgh Napier University
for ISC Research & Knowledge Transfer
involving “Innovative Housing
Construction - for environmental benefit and
quality of life”
Contact details
Professor Sean SmithDirector – Institute for Sustainable
Constructionwww.napier.ac.uk/isc
Email: [email protected]
