Section reinforcement using bolts

[hamza41]

Hi Everyone,

We are reinforcing a corroded existing W16x36 with two centred C12x30 channels.

I would like your opinion on how to determine the efforts on the connection bolts and their spacing as the shear flow is null. I detemined the maximum force from the stress on the half top of the channels, and I'm not sure on many longitudinal bolt I should divide it.

The client is asking how the loads can be transfered to the channels when the holes are 1/16" larger than the bolts.

And do we have to provide a clamp load from the bolts, how to calculate it in this case ? do the bolts need to be pretentioned ?

Thank you for your help.

 

[KootK]

For any interested parties, this is a double post with my comments in the original: Original Thread

 

[hamza41]

Thank you Kootk, I thought this forum was more frequented.

 

[KootK]

It definitely is more frequented. A bit of a hassle but I would delete this thread and have the other moved here. You can redflag the threads yourself and give the mods instruction.

It is my opinion that there should be no structural subcategories but nobody listens to me on that front.