timber homes (sans 10082) -...
TRANSCRIPT
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Timber Homes (SANS 10082)
PRESENTED BY: WERNER SLABBERT
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• What is a Timber Home?
• Why do we care about Timber Homes?
• What is a Timber Home worth?
• Looking to the future.
AGENDA
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What is a Timber Home?
Source unknown
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What is a Timber Home?
Eco Log Homes
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What is a Timber Home?
Timber frame building is a versatile, time-tested
method of natural building that allows you to
create beautiful, sturdy buildings.
Rustic Homes
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What is a Timber Home?
Timber frame buildings have been around for
thousands of years in ancient Japan, continental
Europe, and Neolithic Denmark, England, France,
Germany, parts of the Roman Empire and
Scotland.
Denmark 1560
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Why do we care about Timber
Homes?
70% of the developed world’s population lives in
timber frame houses. These include many in the
USA, Canada, Scandinavia, Europe, New Zealand,
Australia and Japan.
Eco Log Homes
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Why do we care about Timber
Homes?
Myth of inferiority
• Timber frame homes do not have the same structural integrity
as brick & mortar.
• A timber frame home will only last for approx. 5 years.
• Timber frame homes are hot in summer and cold in winter.
• Timber frame homes create a fire risk.
• Timber frame homes destroy forests.
• A Timber frame home is a cheap alternative.
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Why do we care about Timber
Homes?
Timber Frame Construction is not an ABT and timber structures are built to a high SABS standard.
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Durability
HAZARD CLASS SYMBOL H3 H4 H5
END USE APPLICATION
(typical examples)
External Above
Ground
In Ground Contact In Fresh Water /
Wet Soils
Balustrades
Fencing bearers
and slats
Outdoor decking
and beams
Garden furniture
Laminated beams
Weather board
Steps
Cladding
Stairs
Timber Homes
Gates
Fascia boards
Plywood
Agricultural posts
Landscaping
structures
Playground
structures
Fencing
Pergolas
Carports
Flower boxes
Decking
Bridges
Stakes
Garden Edging
Transmission Poles
Piling
Retaining
Walls
Slipways
Culverts
Flood Gates
Jetties
Drains
Walkways
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≈ 25% Roof
Walls≈ 30% Glazing
Thermal
bridges
≈ 10% Ground
Floor
≈ 10%
≈ 10%
≈ 15% Air
renewal
Summer
Winter
Principle of
insulation
≈ 25% Roof
Walls≈ 30% Glazing
Thermal
bridges
≈ 10% Ground
Floor
≈ 10%
≈ 10%
≈ 15% Air
renewal
Summer
Winter
Principle of
insulation
Hot and Cold
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Hot and Cold
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Fear of Fire
• Timber performs better than many other building materials in the
event of a fire. It chars and burns at a slower rate and is less likely
to melt or collapse.
• Correctly built, a timber home comfortably measures up to South
African fire safety requirements. The charring rate of timber is
0.6 mm per minute. This figure is widely accepted internationally
and has been the subject of extensive published research.
• The charred timber prevents oxygen reaching unburnt timber, thus
extending the structural integrity of the burning timber.
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Sustainable?
• Timber is a renewable resource – in sustainable
plantations, harvested trees are constantly replenished.
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Carbon Footprint?
• Is carbon footprint really a big deal?
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Carbon footprint and your new home
• Typical Residential Home (+-200m²)
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What is a Timber Home worth?
Challenges faced in evaluating a timber home.
• Most people don‟t understand the construction method.
• Most people don‟t understand the value difference
between a high-value structure and a low value „wendy
house‟.
• Most people don‟t know how to identify the attributes of
a home built in strict accordance with the
SANS10082:2007.
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What is a Timber Home worth?
The ITC-SA is here to help.
•The ITC-SA can provide an inspector that is qualified to
evaluate an existing timber home.
•The ITC-SA can provide a list of registered ITC-SA
timber frame member builders.
•The ITC-SA can provide a list of registered ITC-SA
engineers that understand structural timber construction.
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What is a Timber Home worth?
How does a builder become an ITC-SA member?
1. The builder applies for membership, subject to an in-depth
background check.
2. The ITC conducts 3 technical audits on 3 separate projects to
ensure that the builder fully understands the SANS 10082:2007.
3. The builder undergoes an annual audit after registration.
4. The builder receives a SAQA registration number from the ITC-
SA as the ITC-SA is a recognised SAQA professional body.
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Looking to the future
International trends?
• “Timber frame is expected to account for 27% of new housing in
the UK by 2017, according to a new report.” REF: http://www.structuraltimberawards.co.uk/news/timber-frame-heading-for-27-new-housing-
market-share/
• “The quarterly European Architectural Barometer survey of 1,200
architects across six European nations showed most architects
expect the use of timber frames to increase over the next five
years.” REF : http://www.building.co.uk/timber-frame-building-set-to-increase-say-
architects/5041252.article
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Looking to the future International trends?
• “Most European countries are strong advocates for the implementation of the
Kyoto protocol and thus all new buildings in Europe will undergo an energy audit
and be attributed an energy rating, so that buyers have the ability to distinguish
energy efficient from energy inefficient buildings. It is estimated that one-third to
one-half of all GHG emissions are attributable to building construction and
operation costs. REF : UK Timber Frame Association.
1-http://www.timber-frame.org/
2-http://communiques.gouv.qc.ca/gouvqc/communiques/GPQF/Avril2006/20/c9105.html
3-Ürge-Vorsatz et al. 2007. Appraisal of policy instruments for reducing buildings’ CO2emissions.
Building Research and Information. Volume 35. Number 4. July/August 2007.
4-Lowe, Robert. 2007. Editorial: Addressing the challenges of climate change for the built
environment. Building Research and Information. Volume 35. Number 4. July/August 2007.
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Looking to the future Timber Homes are gaining popularity in South Africa
Eco Log Homes
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Looking to the future Timber Homes are gaining popularity in South Africa
Eco Log Homes
Eco Log Homes
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Looking to the future Timber Homes are gaining popularity in South Africa
Eco Log Homes
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Looking to the future Timber Homes are gaining popularity in South Africa
Eco Log Homes
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TAKE AWAY?
• Timber frame homes have many exceptional benefits.
• Due to lack of education and exposure, timber homes
are often difficult to evaluate.
• The ITC-SA can assist with all aspects of timber home
valuation and connect you with timber experts.
• Timber frame homes are gaining popularity in South
Africa.
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THANK YOU www.itc-sa.org