Timber Joist Ground Floor

The weight of the timber floor itself consists of the timber joists the plasterboard ceiling underneath it except for suspended timber ground floors the floorboards and the nails or screws used to fix both of the aforementioned coverings.

Timber joist ground floor.

With minimum floor build height. Joists on the ground floor were sometimes a pole pole joist half round joist log joist. A round timber with one flat surface and in barns long joists were sometimes supported on a sleeper a timber not joined to but supporting other beams. The ends of these timber joists are built into or suspended by joist hangers from the external walls of the property.

Building a wooden floor on top of a dirt floor will lead to eventual rotting of even treated wood though the barrier will delay the onset of this for several years depending on the environmental conditions of the building region. The system is ideal for both new build and retrofit installations. The composite chipboard panel with heat dissipation foil offers excellent output and response and is suitable for all heat sources. The following table gives details of allowable spans and spacing between joists for the most common timber sizes used in floor construction.

But it s usually best to run the sister joist over the entire span. Creating a vapor barrier only delays the effects of moisture on the wood of the floor. With a precast floor you have little option but to hang a suspended ceiling below the floor. All the figures are based on normal domestic floor loadings where the floor construction is typically 18 25mm floor boards sheets with up to 12 5mm thick plasterboard and skim underneath.

When the sagging joists are level apply a generous bead of construction adhesive to the existing joist. The joists must be able to support this dead load. Solid timber joist sizes are provided in the bs 8103 3 span tables. Joists left out of an area form an opening called a well as in a stairwell or chimney well.

Ground floor hollow or timber floor. Oneboard structural system that can be laid directly on joists. Consider how you plan to run cables and pipes through your floor void. Saving you time and money on site.

Then attach the sister joist using three 16d common nails driven every 16 in. Timber floor joists shall be adequate for the spans and loads and be correctly installed. Hollow floors also known as suspended or timber floors are simply timber joists suspended across and supported by load bearing walls under the floor. True floor joist span calculations can only be made by a structural engineer or contractor.

Timber joists can be drilled out or chipped away with caution but it is not straightforward. Driving 16d common nails in old hard wood is difficult. Where the tables do not apply or where there are concentrated loads floor joists should be designed by an engineer in accordance with technical requirement r5.