Pressure vessels and stacks anchor bolts torq

[LPC1]

Hello,

I want to know which is the torque value to be applied on the base anchor bolts of pressure vessels, process columns and stacks.

Can I simply use the torque values determined for bolts considering bolt diameter and material?

Some say the correct practice is tightening the nut by hand until it locks, then tighten it a quarter of round by tool (nut wrench), put on it a lock-nut and tight it by tool again. Is it correct?

Isn't this harmful to the concrete and grouting?

Thanks!

LPC1

 

[TGS4]

Ask the design engineer of each vessel. In some cases, it may be desirable for the vessels to slide, in which case tightening the anchor bolts is counter-productive.