Precast/Tilt up slotted inserts

[JStructsteel]

For a slotted insert (JVI PSA type)with a strap anchor, would you expect any shear resistance along the length of the insert if the strap is properly tightened. Essentially you get a clamping force. I dont see any info from the mfg that suggests there is, but wondering if anyone knows about this.

Thanks

 

[GC_Hopi]

I was curious so I looked at their website. I dont see anything that indicates it was designed to resist a force in that direction or tested in that direction but the brochure does say to put a washer if you need vertical movement which suggests some resistance. Contact the manufacturer is the best only bet.

 

[JStructsteel]

Thanks, that makes sense what they show. I will not rely on any capacity along the length.

 

[Brad805]

So a capacity other than pullout or in plane shear?

JVI Tests

 

[JStructsteel]

I am saying along the length of travel. If the strap is tightened down, any resistance along the length of it from the clamping force.

 

[Brad805]

Would it not defeat the purpose of the connection if it provided some resistance in that plane?

 

[JStructsteel]

Not necessarily. It gives erection tolerances, but once installed, might want resistance in that direction for lateral movement, etc. The connection does not move up and down inside, etc.

 

[Brad805]

Given the variables involved of all the different materials involved I think you are going down a path very few do. The square nut inside the connection moves up and down. If one were to torque the strap beyond hand tight I suppose you will get some friction, but that is not the intent JVI had when they came up with this connection.