Quantal Orangery Technical Guide 2010 · 2012-03-22 · Quantal Orangery Roof Kit 2010 2 of 4 They...
Transcript of Quantal Orangery Technical Guide 2010 · 2012-03-22 · Quantal Orangery Roof Kit 2010 2 of 4 They...
Quantal Orangery Roof Kit 2010
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Hotline: 01626 832355 E-mail: [email protected]
ORANGERY ROOF KIT: TECHNICAL MANUAL
Quantal’s all new Orangery Roof Kit is a unique product designed to make
installing an Orangery quick and simple whilst still enabling you to install a
roof which offers superb performance.
The complete Orangery kit has been
designed to compliment the BBA approved
Quantal roof system and is based upon pre-
constructed, bespoke sized modular
cassettes which enable simple and speedy
onsite assembly.
KEY FACTS
• BBA Certified Timber Beams.
• High performance pre-cut insulation panels and thermally broken fixings.
• High quality Vapour Control Layer.
• Simple 4-part modular design for speedy onsite assembly.
• Structurally guaranteed by Quantal.
VERSA-LAM BEAMS: BBA APPROVED
The VERSA-LAM® beam is a laminated veneer product made from Southern Yellow
Pine veneers, bonded together with waterproof structural adhesives and having a
parallel running grain and as such can be considered to be solid timber members
with holes and notches being formed in accordance with the guidelines given in
the Building Regulations approval document “Timber Intermediate Floors and
Dwellings” Clause 2.5. It is the high compressive stresses perpendicular to the grain
that makes it ideal for use as the principal load carrying beam in this timber roof
engineering application.
The beams are approved for use in the UK by the British Board of Agrément, as
well as receiving recognition form the NHBC and Zürich and are manufactured
under a factory production control system with full compliance to the UKTFA Code
of Practice to ensure the highest standards of design and audited on a monthly
basis by a third-party inspection agency.
The beams are manufactured and supplied in billets typically up to 6m long
available in thicknesses of 38, 45, 89, 133 and 178mm, and in depths of 241mm or
302mm.
The beams will arrive on-site with a moisture content of 8% to 10%. In a Service
Class 1 environment (as defined in BS5268-2:2002), it will attain an equilibrium
moisture content of 10%, whilst in a Service Class 2 environments, it will reach a
final equilibrium moisture content of 12% to 14%.
QUANTAL
Units 9/10
International House
Battle Road
Heathfield Industrial Estate
Newton Abbot
Devon
TQ12 6RY
Typical VERSA-LAM
Sections
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They are untreated with a natural durability sufficient to ensure a minimum design
life of 60 years when protected by a layer of sheathing and breather membrane
and not subject to mechanical damage or insect attack. Preservative treatment
should not be undertaken without consulting Quantal Technical as this may affect
the structural integrity of the product.
For the purpose of calculating fire resistance of the beam members, a charring rate
of 0.66mm per minute should be used.
Service Hole Help Diagram
BCI-JOISTS
The Joists used in this product are an accepted building material within the
construction industry when designed in accordance to BS5268-2, receiving
recognition from the British Board of Agrément and BM TRADA, as well as full
compliance with the UKTFA Code of Practice to ensure the highest standards of
design.
Further compliance is given to all current and forthcoming environmental
legislation and International Environmental Accreditation adds as a framework for
guaranteeing sustainable timber supplies are used.
The joists are untreated but when used in Service Class 1 or 2 conditions (as
defined in BS5368-2:2002), they may be taken to have a service life comparable to
that of natural timber.
The acoustic specifications of the joists comply with Building Regulations for
Resistance of the Passage of Sound (Part E) (provided appropriate detailing is used)
up to 40dB.
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VAPOUR CONTROL LAYER: DPM
The Damp Proof Membrane is a high quality polyethylene Vapour Control Layer
produced to PIFA Standard 6/83A:1995 and complying with the relevant Building
Regulations when used in conjunction with our specified Joining System, to ensure
complete integrity of joins.
The product is a high puncture resistant material and can be classified as non-
hazardous when used in accordance with the relevant Codes of Practice (CP102
1973) and PIFA Certificate Number 1995/10. It is chemically inert and therefore not
affected by acids or alkalis that may be present in the surrounding environment.
WARM ROOF DESIGN: INSULATION
The insulation is CFC/HCFC free and has Zero Ozone Depletion Potential and a fire
rating when tested to BS476 Part 3: 1968 “External Fire Exposure Roof Test”
dependent on the waterproofing system specified but will typically achieve FAB
rating.
It is laid with a constant gradient of 1 in 80 away from the main house structure to
ensure that no rainfall ponds.
The High performance insulation panels form part of the modular cassettes and
these, along with the thermally broken fixings, allow a u-value of 0.2 to be achieved
through the wooden roof structure. This effectively removes the need for through
ventilation, which can be a difficult to achieve in an orangery roof.
U-VALUE
TABLE 2: U-value calculations
4-PART MODULAR DESIGN: 3-STAGE CONSTRUCTION
1. The 4 modular cassettes are manufactured to your bespoke requirements;
complete with all the previously mentioned layers, including a 150mm minimum
Typical Cross-Section
through the Cassette
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up-stand on the glazing edge to eliminate splash back, and delivered ready to
install.
2. The modular design allows quick and easy on site assembly.
3. Once installation is complete any suitable waterproof covering
material can be applied to weatherproof the complete roof
system.
CASSETTE ARRANGEMENT AND TYPES
The standard perimeter and corner support arrangement recommended by
Quantal for the modular cassettes is either face fixed to the house wall or edge
supported in the house wall and as such the respective cassette types will be used.
For non-standard arrangements, consultation with the structural engineer is
required and an alternative design may be compiled.