Floor Trusses Vs Tji

Because it uses single wood members as building blocks there can be many variations on its design.

Floor trusses vs tji.

Floor trusses have built in openings which can be used to install hvac ductwork plumbing lines and electrical wiring. Floor trusses are certainly a viable option for your floor structure. Floor joist stiffness has most to do with the span of the floor joist. Tji joists are lightweight and come in long lengths which makes them faster and easier to install than traditional framing and saves you both.

The advantages of open web floor trusses are beginning to decelerate the growth of ewp. 9 16 tji joists design properties 6 floor span and load tables 7 8 tips for preventing floor noise 8 allowable holes 9 cantilevers 10 11 roof span and load tables 12 13 framing. Though i joist sales per housing start have increased about 6 over the last two years the trend has slowed considerably. Some of the small gain is due to the continuation of the replacement of solid sawn joists.

With floor trusses being built this way to begin with it was a huge step for the world of i joists. However most of the increase results from the national builders market share growth. Floor trusses can span farther between bearing points than i joists allowing for larger open rooms. Floor joist spacing for i joist and 19 2 spacing for open web because the floor plywood tends to get bouncy.

A floor truss consists of high quality 2 x 4 or 2 x 3 lumber connected with metal plates. Ewp is resourceful for many reasons some of which you may already be aware of some of which you may not be. The dimensional stability of tji joists help them resist warping twisting and shrinking that can lead to squeaky floors. This also reduces the need and cost for extra bearing posts beams and footings.

The biggest advantage in my opinion in using i joists is simple. Other than the floor stiffness i would not recommend going more than 16 o c. This combined with its strength and stability made it a popular choice in residential. Fire safe construction 3 floor performance and tj pro rating 4 5 section 1.