Filler Joist Floor Design

It was formed from iron or steel joists spaced up to about 1 m apart and in filled with unreinforced concrete.

Filler joist floor design.

Backer and filler blocks. The term filler joist is a generic one used for certain types of building floors dating in particular from the late victorian era to world war ii. The dimensional stability of tji joists help them resist warping twisting and shrinking that can lead to squeaky floors. Corrosion of the steel beams due mainly to the porosity of the concrete causes cracking.

Filler joist slabs filler joist as an early form of floor slab construction which was commonly used between about the 1880s and 1920s. The filler joist method of floor slab construction prevalent in council housing constructed during the 1920 sand 1930 s entailed encasing steel i section beams within generally poor quality concrete containing clinker and brick aggregate. Don t worry you won t need to do a lot of calculations in determining the size and placement of the structural framing within your house design. Residential structural design vertical structural forces we were about to start learning about floor joist span tables.

Many structural engineers have for a long time been convinced that the effect of casing steel beams in concrete in the manner which has obtained for many years with the filler joist floor has a strengthening effect upon the floor and that it is safe to design the steelwork in such floors upon higher stresses than the extreme fibre stress of 7 5 tons per square inch which is usually specified. Using floor joist span tables. 3 2 assessment of the existing floors the filler joists slab are typically formed from 8 x4 steel joists spaced up to about 1 5 m apart spanning between cross walls and in filled with approximately 150mm thick unreinforced clinker concrete. These may commonly have embedded iron or steel joists.

Tji joists floor framing details components. To have the specifications and bye laws re vised so as to enable us to design the steel work for such floors more economically. Corrosion of the steel beams due mainly to the porosity of the concrete causes cracking. Trus joist tji joists are a key part of making a high performance floor.

They are required when the double joist member is supporting load from one side. Loads applied to the concrete are transferred to the joists. The strength of filler joist floors. A number of patented systems were developed at the end of the 1800s.

Tji joists are lightweight and come in long lengths which makes them faster and easier to install than traditional framing and saves you both. Those of earlier date from the 19th century can have wrought iron sections or even cast iron tees in early floors. Free download as pdf file pdf text file txt or read online for free. Continuing on from part 1.