Triple Joist Timber Floor Section

Follow the rules to keep your floor solid.

Triple joist timber floor section.

In these cases the joist hangers will be 4. Ce 200 details of construction. True floor joist span calculations can only be made by a structural engineer or contractor. Most floor joists consist of 2 by 6 inch lumber but they can use 2 by 8 or 2 by 10 as well which will require longer joist hangers.

Maximum floor joist span for no. So the house dimensions will now be 24 x 13. The floor consists of wooden joists also called bridging joists spaced 30 to 40 cm apart and supported on end walls. The widest span in the floor joist span table in part 2 of this tutorial module showed that floor joists can span 17 2 if they are 2 x 12s spaced 12 o c.

With all joined timbers supported by fully nailed proprietary joist hangers. If your home is more than 20 years old your floor joists are most likely solid wood 2x8s 2x10s or 2x12s. Basement ground floor of timber 1 auditorium dances and dramas. Around floor openings such as stairs it will be necessary to install larger or double triple timber trimmers bolted together to carry the floor joists see guide leaflet 6 for information.

Framed or triple joists timber floors. Live load is weight of furniture wind snow and more. Dead load weight of structure and fixed loads 10 lbs ft 2. 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.

D o u b l e j o i s t t i m b e r f l o o rs 3 1 8m to 2 4m3 6 to 7 5m 300mm binders bridging joist 300 mm c c plan. Double and triple joist hangers. 1 ft 0 3048 m. Double and triple joist hangers are wider to accommodate either a thicker piece of lumber or two or three joists placed side by side.

The notching and boring rules of thumb for solid lumber are shown in fig. 1 psf lb f ft 2 47 88 n m 2. You can notch and bore joists without sacrificing critical strength but you must follow the rules. Framed triple joist timber floor.

Let s expand our house beyond that 17 2 span capability to 24 feet wide. Single joist timber floors.