Wooden floor recovery - photos (Click on photo to enlarge)
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It is important to make a preliminary inspection of the state
of the beams at their supports as invisible deterioration can often be so extensive
as to make renovation work useless.
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View of an existing single-frame ceiling before strengthening
it. The old unattractive false ceiling made from plastered cane has just been
removed
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Wooden beams lying on the lower flange of a steel HEA beam.
This is a valid solution for covering large spans when building new floors.
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Fitting perimeter string-courses during the renovation of an
existing floor. This is particularly important when building floors in seismic
areas.
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Detail of anchoring the concrete slab to the masonry wall by
inserting steel bars at an angle of 45°.This is important when upgrading buildings
to seismic standards.
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Drilling two holes for the "MAXI" connector screws. This is a
very quick operation.
The equipment required is available for hire.
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Tightening the sleeper screws supplied with the connector
after lubricating them.
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"MAXI" connectors fixed over planking covered with a sheet of
waterproof transpiring material.
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Drilling holes in the planking to house the connectors,
positioned in direct contact with the beam. The connectors should not be aligned
along the beam.
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Example of a floor made from beams connected with hollow floor
tiles. In this case, the connectors can be mounted afterwards so as to accelerate
assembly.
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Mineralised wood fibre panels can be used to fill the space
between one beam and the next and enhance the level of fire resistance of the deck.
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Detail of a double frame floor where the cast concrete has
been plastered. In these cases, it is difficult to install formwork for the
concrete.
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Detail of a double frame floor with connectors mounted on the
main beam and joists. Reinforcing rods in the shape of an upside-down omega will be
inserted over the main beams to connect the lower layer of concrete with the upper
one.
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Double frame floors with long connectors.
The joists have been cut to ensure the concrete beam remains in direct contact with
the main beam. Reinforcing rods will be placed over the wooden beam, running along
the connectors.
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View of a double frame ceiling with flat tiles. The concrete
cast between one joist and the next has been left unfinished.
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It is important to shore the floors to allow the concrete to
cure correctly. Suitable shoring should be used.
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Some timber producers supply wooden beams already fitted with
the connectors in order to accelerate site assembly times.
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Load tests on a strip of floor at the University of Florence.
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The connectors are supplied in handy plastic bins that are
easy to move around the work site.
Composite structures:
