Owen GallagherTechnical Sales Manager

“Promoting Traditional Build”

Concrete Blocks

Topics to cover

Supply

Thermal Bridging – CBA Details

Sustainability

…then lunch

The Market

Govt. InitiativesResponse

Capacity

How can manufacturers respond?

• Re-open moth balled plants

• Extended Working Hours

• Speed-up curing regimes

• Build winter stock levels

The Market

Its not rocket science!!

It’s a concrete block

The Market

The Market

New Output

Concrete Blocks

Topics to cover

Supply

Thermal Bridging – CBA Details

Sustainability

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

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

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

Localism

Local Supply

Local Plant

Local Materials

Local Labour

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

Concrete Blocks

Topics to cover

Supply

Thermal Bridging – CBA Details

Sustainability

Thermal Bridging

What is it?

Thermal Bridging

Thermal Bridging

Is it significant?

Who does it?

Window and door jambs

Window and door lintels

Window SillsParty wall junction

Eave / wall junction

Corner

Thermal Bridging

Gable Wall Junction

Ground Floor / Wall

Ground Floor / Party wall

Intermediate Floor / wall

Ceiling / Party Wall

Thermal Bridging

1

Calculating the Y value

• Total Building Envelope

• Length of Junction

• Psi Value (Ψ)

Thermal Bridging

SAP 2009

Table K 1

Thermal Bridging

Part L1a Analysis

End &

Mid Unit

Y = 0.053Y = 0.0788 / 0.0722

Part L1a Analysis

Part L1a Analysis

Part L1a Analysis

APA www.constructivedetails.co.uk

CBA www.cba-blocks.org.uk

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