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Beam & Block Flooring System
Here at Styro Build, we strongly advocate the use of our
Beam and block flooring system, which superbly complements ICF construction and
offers many advantages over traditional beam systems.
The Styro Build Floor System improves on the traditional beam and
block system by removing the need for heavy crane work. By using
advances in beam engineering complimented by Expanded
Polystyrene (EPS) formers, concrete floors can now be laid by
hand.
Cross-Section
Floor Depth
The Beam which
supports the EPS ceiling/floor infill block system, consists of
a steel filigree mesh, cast onto a concrete base to form a
pre-cambered reinforced beam.
The high costs
associated with the erection and dismantling of conventional
floor shuttering, such as on site craneage, are reduced thanks
to the lightweight nature of the beams (max. 25 kg/lm).
The lip on the
infill blocks extends below the Beams concrete foot to
prevent cold bridging and give a smooth lower surface.
Plasterers only need to scrim the joints between the Styro Build blocks
to obtain a smooth surface suitable for a variety of finishes.
Pipe work for
underfloor heating can be laid, with the help of dedicated
fixtures, before the concrete pour.
Two small slots in
the base of the infill blocks are designed for the insertion of
a timber batten to facilitate the attachment of paneling or
other light fixings.
LOAD
SPAN TABLES
Load Span Tables based on calculations prepared by:
Steve Saunter (MI Struct E), RMA Consulting Structural Engineers
Tel: 01483 279800 Fax: 01483 278500 e.mail: steve.saunter@rma-eng.co.uk
V17 Beams @ 750mm ctrs
Concrete Topping 75mm
to 100mm
Load Allowance
Screed 1.2
Ceiling 0.25
Self
Weight 3.04
Partition Walls
1.0
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5.49kN/mē
Live Load 1.5kN/mē (DOMESTIC)
SPANS 0 to 4.0m
Use V17. 10-8-12
4.0m to 5.0m
Use V17 10-8-14
5.0m to 5.5m
Use V17 14-8-16
5.5m to 6.0m
Use V17 16-8-20
Live Load 2.5kN/mē (OFFICE /
GARAGE)
SPANS 0 to 3.5m
Use V17 10-8-12
3.5m to 4.5m
Use V17 10-8-14
4.5m to 5.0m
Use V17 14-8-16
5.0m to 5.5m
Use V17 16-8-20
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Spans in excess
of 4.5m require mid-span prop during concrete pour.
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For spans
greater than shown above refer to Structural Engineers.
ADDITIONAL INFORMATION
Supports
The Beam has a pre-camber and
at all spans up to 4.5 metres there is no need to have a forest
of supports whilst the concrete pour is underway. We would
suggest that a midspan prop is introduced but this is a belt and
braces approach and not strictly necessary, as the beams will
straighten under the weight of the wet concrete.
For Spans in excess of 4.5 metres the beams do require support
at midspan.
After the concrete pour, but before the concrete has begun to
cure, the props should be adjusted down to bring the beams to
the level position then left until the concrete is fully cured.
This is a great improvement over most traditional in-situ
concrete floor systems and saves a great deal of time and effort
on support positioning.
These savings are in addition to those made due to the ease with
which the beams and formwork blocks are laid.
Spans
The V17 series can span up to
6.0 metres max under domestic loadings (1.5N/sq mtr).
The V22 series can span up to 7.5
metres under domestic loadings.
Where greater spans are required
the beams can be engineered to span up to 9 metres unsupported
during pour and up to 12 metres in total.
U-Value
0.24
W/mēK
Finishes
The finished floor can then be power floated so no screeding is
necessary.
As always your design
will be checked by your structural engineer.
Some pictures:
cont.
Cont.
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