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Restoration of wood floors


Restoration of wood floors

Existing wood floors

Old timber floors often need strengthening and stiffening as they were designed to bear moderate loads and almost always suffer from excessive deflections with respect to current requirements.

Intervening with load-bearing concrete is an optimum solution as it allows the existing floor to be reused rather than replaced, with only a modest change in the existing floor thickness.

New wood floors

New timber floors must be made with larger section beams than traditional ones if they are to be sufficiently strong and stiff. The composite wood-concrete section reduces the total thickness.

In both cases, the most convenient and easiest of solutions is to lay and connect a thin concrete slab, adequately reinforced, over the existing structure either to strengthen and stiffen existing timber floors or to allow shallower beams to be used when building new floors.

The composite wood and concrete system can also be used to make flat or pitched roof structures.

Wood floors

Wood floors and connectors

The example on the side shows the different load-bearing capacities of the beams at constant deformation. The comparison between the first image and the second is typical of the restoration of an existing wood floor. The load-bearing capacity increases significantly. The comparison between the second image and the third shows how the use of connectors can allow a significant reduction of the section of the wood beam, whilst ensuring the same load-bearing capacity.

Dowel and crampon connectors placed between the timber beams and the concrete slab make the two materials collaborate with each other, resulting in a structurally efficient structure in which the concrete is mainly under compression and the timber mainly under tension. The composite timber-concrete structure will therefore be stronger and stiffer than a simple timber structure.

There will also be an improvement in the dynamic behaviour with less vibrations, a better value of acoustic insulation and thermal inertia. The most obvious advantages for composite timber-concrete structures can be seen in a greater load-bearing capacity, a lower total height of the floor structure, greater rigidity, and improved fire resistance.

INSIGHTS

Tecnaria wood connectors have specific features that makes them unique: the efficiency of the connector is ensured by the solid base plate, which supports the stud and features crampons that ensure a high level of adhesion to the wood, and the best shear stress absorption. The many lab tests have highlighted the validity of this […]

To ensure an efficient construction and consolidation of wood and concrete floors, TECNARIA was the first company in Europe to submit its BASE and MAXI connectors to an accurate experimental investigation and undergo stringent tests in compliance with Eurocode 5 regulations. The deformability and strength characteristics of connectors fastened to timber have been experimentally verified […]

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