Detail Single Joist Timber Floor

Wooden battens of 50 to 75mm thickness and trapezium in shape are embedded in bed concrete at an interval of 500 to 700mm.

Detail single joist timber floor. Single joist timber beam. The floor consists of wooden joists also called bridging joists spaced 30 to 40 cm apart and supported on end walls over which timber planking or boarding is fixed. Planks are connected to each other by tongue and groove joints. Each joist has a 3 5 inch wide nailing flange on the top and bottom virtually ensuring a non squeak floor when properly installed.

Some newer homes have manufactured i beam shaped joists. Single joist timber floors this is the simplest type of timber floor used for residential buildings where spans are short or moderate say up to 4 m and loads are comparatively lighter. Construction details in this type of flooring timber planks of 20 to 25mm thickness and width 150 to 200 a concrete bed of 100 to 150mm thick is laid. 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.

Floor joists are typically 2 by 8s 2 by 10s or 2 by 12s. Wooden planks are laid on the battens. Filling of selected earth wall bridging joists floor boards f l d p c. The dimensional stability of tji joists help them resist warping twisting and shrinking that can lead to squeaky floors.

The following table gives details of allowable spans and spacing between joists for the most common timber sizes used in floor construction. Wall plates sleeper wall 10 to 15 mm cement course. A floor s framework is made up mostly of wooden joists that run parallel to one another at regular intervals. Additional support for the floor joists is achieved by nailing the ends of the joists into headers.

Section r502 10 of the international residential code states that header joists can be the same size as the floor joists when the header joist span isn t greater than 4 feet but if the header joist span is more than 4 feet you ll need to double the header joist and ensure that it s capable of. Trus joist tji joists are a key part of making a high performance floor. Ce 200 details of construction. Framed triple joist timber floor.

Planks are connected to battens by using screws. Double joist timber beam. The extra wide nailing surface provided by the trimjoist makes for a superior installation and more satisfied owners. Ceiling joists are usually 2 by 6s or sometimes 2 by 4s if it is an older home.