iSpan joist system

[archeng59]

Does anyone have experience with the iSpan joist system.

http://www.ispansystems.com

A client wants to use these proprietary cold-formed metal joists on a project instead of typical open-web steel joists and metal roof deck. I'm gathering info from the manufacturer and learning about the system. Just curious if there are any issues that anyone experienced that I should work to avoid.

Thanks,

RD

 

[Agent666]

We have similar type of thing locally

https://www.speedfloor.co.nz/

. They seem pretty strong on proving vibrations work so I guess that can be an issue with these systems.

Never used them personally, but been to a few presentations.

https://engineervsheep.com

 

[271828]

As with any light system, vibration must be considered.

 

[Canuck65]

Generally found their engineering support to be pretty good. But we did have one instance in a custom house where they upsized a steel beam that we had originally sized for gravity loads. They said it had to be upsized for vibration concerns. I have never seen such a large beam in a residential application. If I remember correctly the steel beam was at least 4x the weight to the one we specified, and we are usually conservative to start in high end custom homes.