FDS2008
Mechanical
- Sep 7, 2008
- 28
Greetings fellow pipers,
I am working on a project in which we have a 14" dia. 900# steam line riser which requires horizontal restraint. We sepcified 24" long shoes that are clamped to the pipe with chrome molly clamps. The piping is also chrome molly. We are using a proprietary design standard spec that has been around for ages and does not specify welding tabs on the pipe to restrict clamp movement, so I am assuming that his is the way it has been done for eons.
I recently asked a Myatt engineer (referred to me by a local pipe supplier) if he would be able to provide me with a table of bolt torques vs axial load rating and he told me that he will need to look into this. It's 3 weeks and counting.
Do any of you have any experience with this? I have a max. horizontal reaction load of 7,000 lbs on a riser which will generate an axial load of approx. 2,100 lbs on the pipe with a friction coefficient of 0.3. My concern is that the shoe will walk. I want to be sure that it doesn't.
I am working on a project in which we have a 14" dia. 900# steam line riser which requires horizontal restraint. We sepcified 24" long shoes that are clamped to the pipe with chrome molly clamps. The piping is also chrome molly. We are using a proprietary design standard spec that has been around for ages and does not specify welding tabs on the pipe to restrict clamp movement, so I am assuming that his is the way it has been done for eons.
I recently asked a Myatt engineer (referred to me by a local pipe supplier) if he would be able to provide me with a table of bolt torques vs axial load rating and he told me that he will need to look into this. It's 3 weeks and counting.
Do any of you have any experience with this? I have a max. horizontal reaction load of 7,000 lbs on a riser which will generate an axial load of approx. 2,100 lbs on the pipe with a friction coefficient of 0.3. My concern is that the shoe will walk. I want to be sure that it doesn't.
