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Hi all, I am searching for ASTM A-89 Grade B steel yield strength. The pressure vessel was initially constructed with the 1943 UPV code and uses that material. I know the tensile strength and the allowable stresses at given temperatures from the 1943 code book but cannot find the yield...

Hello all, I am trying to find documentation/limitations about a manway being tangent to a horizontal shell. I found some documentation and formulas for the manway and how far it can be from the center of the elliptical head but nothing about being tangent to the shell. Thanks in advance

Hello all, Has anyone heard/read about a nozzle attached to a flange? There is a pressure vessel and the contractor would like to create a manhole. Unfortunately a nozzle that is blinded off, running a line of 4" pipe on the opposite end through the pressure vessel, is in the way. The...

Hello all, I am trying to find a forum (I believe in API code issues) that talks about citing codes. I had found it not long ago and searched for hours and I have not had any luck. The forum talked about when someone has a code book in a certain year and a new addendum comes out the following...

Hi all, I have a P&ID that give the following info.: Size: 50'-8"O.D. x 42'-0"HG. CAP: 15,000 BARRELS PRES: DESIGN: 3P/2V OPER: X PSIG TEMP: NORMAL 60 F MATERIAL: CARBON STEEL The height of the tank from a drawing is 42'-0" from the bottom shell to the very top shell. My three questions...

Hello all, Is there an ASME code for alterations/modifications of pressure vessels? I am trying to find requirements for removing a nozzle to make way for a bigger nozzle (as long as it still passes the requirement, i.e. pressure, plate thickness, etc.) I know NBIC has information but I do not...

Good morning, I was hoping that someone could lead me in the right code to see what the minimum distance requirement is for a shutoff valve and a boiler following ASME codes and standards. I just need to find documentation for my report. Thanks in advance, eng741

Hi all For IBC 2009 section 1607.4 states that the concentrated load can be distributed over an area of 6 1/4 SF. Is this the max area allowed? What about for one way slab, does it follow the 6 1/4 SF rule as well? Also would the thickness of concrete have any affect on the affected area...

Hi all I was told that #/SF=#/LF when analyzing a section of concrete. For example the dead load was 150#/SF and they said if you take a linear section of it, it will convert to 150#/LF. Then you can plug 150#/LF into your bending moment equation. Is this correct? If so could anyone give me a...

Hi everyone First I am trying to find a quoted reference to use when creating a point load into a distributed load (e.g. a parking garage and the wheels of the vehicle(s)). Also, is there a minimum thickness that the composite concrete can be. Second I am trying to distinguish between SF...

Hi all I am trying to figure out the surface area that a point load can extend on for a composite one way slab. For example what would the surface area be for a point load on a 8 inch slab. Also, where can I reference this and find the equation, formula, etc. Thanks in advance eng741

Hi all, I am having a little bit of trouble reading this spec, I have attached a view of the spec. 1) The view is from the governor, I'm assuming it's behind the inlet and outlet (they are on the same side). Where is the governor located? 2) Inlet Flange: "FORWARD FROM CENTERLINE OF EXHAUST...

Hi all, my questions: 1) What's the difference between B31.1 and B31.3 2) Depending on B31.1, or B31.3 where can I find the allowable stress for a given material? Is there a formula, chart for the allowable stress? Also, where can I find the specs for any material? Thanks in advance, eng741

Hi everyone. Would anybody be able to lead me in the right direction in finding a reference where it says that I can take off a cap and replace it with a plate for a pressure vessel. The pressure vessel is rated at 70 psig. Thanks in advance, eng741

Hi everyone, I am trying to find a reference for a pressure vessel following ASME section viii where it would state about repairing/altering faces on the pressure vessel. I am trying to resurface a raised face to a flat face and I would like to read the requirements in doing so. Thanks in...