owen gallagher technical sales manager “promoting traditional build”
TRANSCRIPT
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Owen GallagherTechnical Sales Manager
“Promoting Traditional Build”
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Concrete Blocks
Topics to cover
Supply
Thermal Bridging – CBA Details
Sustainability
…then lunch
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The Market
Govt. InitiativesResponse
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Capacity
How can manufacturers respond?
• Re-open moth balled plants
• Extended Working Hours
• Speed-up curing regimes
• Build winter stock levels
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The Market
Its not rocket science!!
It’s a concrete block
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The Market
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The Market
New Output
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Concrete Blocks
Topics to cover
Supply
Thermal Bridging – CBA Details
Sustainability
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Concrete Blocks
Are greener than you may think
• Cements Content only 9% *1
• 19% of above are ‘alternative’cement’s
• Aggregates are often ‘surplus’ dust from quarries
• Blocks can be 100% recycled aggregate
*1 WRAP Resource Efficiency Action Plan
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Concrete Blocks
• Embodied Energy 6Kg CO2 /t blocks *2
That is 7 times less than softwood
That is 30 times less than steel
That is 40 times less than plastic
*2 Uni. Bath Inventory of Embodied Energy 2008 (Excludes Calorific Value of wood)
Are greener than you may think
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Concrete Blocks
• Manufacturing waste is re-used (WRAP)
• Energy used in manufacture only 21kW.hrs/t
• Less than 2% wastage on site
• Delivery average 60 miles from 100 plants across the UK
Are greener than you may think
• CO2 Footprint does not need to measured
from the Port of entry
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Localism
Local Supply
Local Plant
Local Materials
Local Labour
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So why Concrete Blocks?
Off the shelf
Ease of use
BRE Green Guide A / A+Recyclable on site to granular
Traditional
Known Practice
Building Reg Compliant
Competitive build costMade locally
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Concrete Blocks
Topics to cover
Supply
Thermal Bridging – CBA Details
Sustainability
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Thermal Bridging
What is it?
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Thermal Bridging
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Thermal Bridging
Is it significant?
Who does it?
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Window and door jambs
Window and door lintels
Window SillsParty wall junction
Eave / wall junction
Corner
Thermal Bridging
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Gable Wall Junction
Ground Floor / Wall
Ground Floor / Party wall
Intermediate Floor / wall
Ceiling / Party Wall
Thermal Bridging
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1
Calculating the Y value
• Total Building Envelope
• Length of Junction
• Psi Value (Ψ)
Thermal Bridging
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SAP 2009
Table K 1
Thermal Bridging
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Part L1a Analysis
End &
Mid Unit
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Y = 0.053Y = 0.0788 / 0.0722
Part L1a Analysis
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Part L1a Analysis
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Part L1a Analysis
APA www.constructivedetails.co.uk
CBA www.cba-blocks.org.uk
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