connection of steel joist to reinforced cmu wall

[ick2]

what is the usual way to attach light weight steel joists to a new CMU wall. Do they sit on the wall in pockets? or sit on a channel anchored in the wall? which is the cheapest solution?
thanks
ick2

 

[Lutfi]

It all depends on the local practices in your area. Also other requirements such as uplift, horizontal shear transfer should be considered.

I Live in Florida and we have the practice of using shear walls and diaphragms to transfer shears. We use concrete tie beams that act as chords for the roof shear.

I use steel embeds into the tie beams. The steel joist seats are then welded to the embed. A consideration is the location of the joist seat and the eccentricity on the wall. The moment due to the eccentricity can sneak up on you and add up.

Good luck.

 

[Ron]

ick2...I agree with Lutfi for conventional steel joists, but for light gage steel joists or trusses, attachment similar to methods used for wood joists/trusses can be used, paying attention to the design aspects Lutfi mentioned.