Tji Floor System Vs I Joist Floor System

You and i both know that the floor system will be as strong as can be and 30 people standing on the floor probably would make little difference.

Tji floor system vs i joist floor system. As depth increases i joist costs rise faster than floor truss costs. My experience has been. The new sister joist is cut to the same length or slightly shorter as the old joist and is inserted into the joist cavity and snugged up against the old joist. Btw one disadvantage to floor trusses is that the floor system can t really be insulated effectively ok maybe with a spray in product.

Whichever system you choose consider your hvac runs first and then see if your plumber and electrician have any objections. Handling 48 or 60 joists and processing them through 300 000 saws. If there are a lot of mechanicals runs in the joist system or it s a deep system 16 and up open webs are probably best. The increasing challenges of i joist floor systems.

This article will address multiple aspects that affect the sound performance of your trus joist floor system and demonstrate how sound performance can be improved. Comparing i joists to factory floor trusses my impression is that a stiffer floor can be had via floor trusses vs. It is clear that for shorter spans dimension lumber will be the most efficient system. I joists of the same height.

The biggest advantage in my opinion in using i joists is simple. Sound transmission through floor ceiling assemblies is essential when designing for multi family housing hotels and mixed use occupancy. If the joists are 14 or less tji s are the way to go. Wood i joists may be a.

Other than the floor stiffness i would not recommend going more than 16 o c. Floor joist stiffness has most to do with the span of the floor joist. Floor joist spacing for i joist and 19 2 spacing for open web because the floor plywood tends to get bouncy. With floor trusses being built this way to begin with it was a huge step for the world of i joists.

Trus joist tji joist specifier s guide tj 4000 july 2019. Fire safe construction 3 floor performance and tj pro rating 4 5 section 1. It should also be a consideration for single family homes. Now substitute 2x12 joists in the same system.

Ewp is resourceful for many reasons some of which you may already be aware of some of which you may not be. Of 15 pounds per square foot psf floor live loads of 40 psf and deflection cri teria of l 360 for total load and l 480 for live load. If the floor is sagging the damaged joist and or a few neighboring joists may need to be jacked up slightly to straighten or raise the floor so the sister joist can be put into place. Increasingly complicated hole patterns.

Incorporating hvac in floor containers requires deeper joists.