in the 4th edition of Dennis Moss' Pressure Vessel Design Manual (p. 188), he says "the base plate of the lug can be attached to the shell wall or unattached." Anyone have experience doing this? We would like to minimize heat loss; and where base sits on the structural steel is a big heat...
can a "shell band" be added to an existing shell by welding a band to the od of the shell? i.e. can it be made from two layers or does it have to be one solid piece?
Does anyone have any rules of thumb for how much area you can spread a point load over for an API-650 self-supported conical roof? For instance, Brownell & Young show the derivation of design equations for a 25 PSF live load on a 3/16" thick roof. A 200 LB man standing with his feet side and...
I've got a cone bottom silo with powdwer that bridges; the plant has tried vibrators with limited success and would like to install "lumpbreaker", i.e. rotating shaft with rod shaped side bars to keep solids broken up in lower part of cone. Shaft would be in horizontal postion coming thru a...
I need to put tapped holes in the face of a piece of metal plate (316 SS).
Can anyone tell me a good reference - or better yet just tell me the answer - on calculating how close a tapped hole can be to the edge of the metal plate.
My current thought on being sure that I am capable of...
Does anyone know a way to mix fonts in Tool tips.
For example, I have a label for "Area = ", and when the cursor hovers over label, I want Tool Tip to display formula, i.e. area of a circle: "Area = (pi)*r^2". But instead of writing "(pi)", I'd rather use the...
I'm using EXCEL 2000. Can you use the built in drawing feature and have objects scaled based on values in cells.
For instance, for a rectangle, you can right click / Format Autoshape / and change the height, width, etc under the Size tab.
But to set those equal to a cell value in VBA, I...
I have a 1983 ASME Section VIII, Division 2 and I'm interested in the Fatigue Evaluation section AD-160. Can anyone tell me if there have been any significant changes in recent years? I know that I should be using current code but right now I'm just trying to determine if I'm anywhere close to...
I'm looking for a table that would show the relative time required to weld different metals, i.e. I've seen one source that says it takes twice as long to weld stainless as carbon steel, and 2.5 times as long to weld monel, etc.
In application where an agitator is secured with bolts in tapped hole, should fine threads be used (rather than coarse threads)? i.e., aren't they less likely to loosen due to smaller incline angle?
In application where an agitator is secured with bolts in tapped hole, should fine threads be used (rather than coarse threads)? i.e., aren't they less likely to loosen due to smaller incline angle?
