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Racookpe1978 The reason for my accuracy is I am trying to minimise the thickness of insulation as much as possible; the criteria to meet is onerous and the areas it will be installed are congested. I don't have the luxury of choosing a different insulating material. The assumptions may well...

I am trying to assess the impact of having an air gap between a hot running pipe and an insulating material. What I am wanting to consider is heat transmission across the gap from both air conduction and radiation mechanisms (the gap is small and the pipe is running at high temperatures so...

Blacksmith37. Our experience with 800 has been very good, we have empirical knowledge of our equipment lasting as long as 25 years. However, most of our supply would not be in service that long, so we've been looking at the alternative material (316) to reduce costs for our clients. What I was...

Thanks EdStainless, I'm assuming this is because of potential Stress Corrosion Cracking? I should add we are aware of several competitors using 316 for a similar application.

Hello, I am wanting to determine if 316 stainless would be suitable for some load bearing components we would supply to the top of an offshore flare stack (>1m from the tip). Historically my company has employed a 'belts & braces' approach in selecting Alloy 800H. The main rational being the...

Sorry I meant concurrently as in simultaneously (I tend to find those two words interchangeable). But that clears things up, thank you. So in essence do these two pressures cancel each other out to a degree (as in they are opposing each other) or would the load be a summation of them acting...

Yes, the structure is open all sides. Thank you for the clarification. I must confess though I did make an error in posting the wrong note as that one was from Figure 6-17a, the note I should have typed is: 1. CN denotes net pressures (contributions from top and bottom surfaces) This one...

Hello, with regard to determining the pressures acting on a monoslope roof of pitch = 0°, Components and Cladding provisions direct me to Figure 6-19A to which I am given two distinct gust coefficient (GCN) values for each zone, one positive and one negative. I am having difficulty in...

Thanks for the reply JStephen, I have looked up the most up to date standard (those equations were from BTH-1 2005, my apologies). This is what BTH-1 2011 has: The effective width shall be taken as the smaller of the values calculated below: beff = 4t ≤ be (3-47) beff = be 0.6 Fu/Fy √(Dh/be...

Hi, could anyone with experience in this standard help explain something about the the effective width limit equations: beff ≤ 4t ≤ be (3-47) beff ≤ be 0.6 Fu/Fy √(Dh/be ) ≤ be (3-48) Where: Fy = Material Yield Strength Dh = Hole Diameter be = Actual width of a pin-connected plate...

No problem Loki, please see the attached. Just to clarify the contact situation, referring to the picture: Contacts (from left to right): 3mm Flange to 10mm Plate: Bonded 10mm Plate to 3.7mm Gasket: Bonded 3.7mm Gasket to 10mm Plate: Frictionless 10mm Plate to 3mm Flange: Bonded...

First Post! Hi all, i'm hoping one of you may have had some eperience in applying pretensions to line bodies in Ansys. I've scoured the forums/google and found very lttle on the subject but I can't imagine it's not being widely used as it is an obvious time saver. The geometry is a bolted...