This is the top level assembly drawing if that helps. Items 3 and 4 re of interest. These are support brackets( that also act as some sort oof pivot hinge i believe)
3DDave,
Yes it is a kind of hinge.
My question about the 48+-1 still stands:
The 48+-1 dimension is a feature of size and the FCF placed underneath it means that this planar featuree of size has a position tolerance? What does that look like physically? I guess one aspect of my question is...
drawoh, agreed, but it is called out on the dimension 48+-1 which is a feature of size and that is what i am kind of struggling to grasp. this is a planar featuree of size so the position tolerance here would be on the center plane between the two faces that the dimensions lines point towards so...
Hello! I am having a little bit of trouble trying to understand /decipher the least material condition and its affects on this diagram. the underlined width of 48+-1 with a LMC modifier,not sure what this means physically? the wdith of the part with a poisition tolerance is the tolerance for the...
Burunduk,
Our process requires a check sheet with some form of tangible measurements that operators can pull to determine if a part is suspected to be bad or if it isis OK. It is just a requirement of our automotive manufacturing process. They require a certain frequency of check like first...
Thanks everyone for the reply!
@jassco, I understand that the width is a feature of size that is not directly on the print but it is a basic dimension which is then driven by the profile callouts on each end- technically if I have a part that is good on all counts but the width is 722 that part...
Attaching the print/drawing in question. In terms of the gd&t governing the basic dimensions for length and width of the box, I am not certain how to translate the gd&t into relatable plus minus tolerance for our shop floor. For the 718 basic dimension, I know that if only one end had the...
Hi Everyone,
I could really use some help with something that I just came across. I am trying to determine what kind of functional gauge i would need for some parts that we make in my company and I am relatively new to the manufacturing industry but eager to learn(I know there are professionals...
Hi all,
I am currently working on an AST project where the MDMT is -20 C- due to which we cant use our usual go to material, A-36, for shell and annular plates unless its impact tested (understandably so). Long story short, after discussing with our client, all shell plates above ~14mm are...
Hello,
My company has to verify the design of an old vessel for seismic loads. The material used in that vessel is BS 1501-151-28A, which, I understand, was used widely in the 70's but is not available anymore.
Can anyone tell me what the ASTM equivalent to this material is? I read different...
Thanks for the replies dig 1 and JStephen.
dig1: why would wind pressure place the bottom flange under compression? shouldn't wind loading place the top flange under compression (for rafters under the roof plate)?
JStephen: I understand that the top flange for a simply supported beam is under...
Thanks for the reply, JStephen.
Building on my previous questions, what design conditions might lead to a requirement of the roof plates themselves requiring stiffening a la 5.10.2.7?
Also, if I have a rafter supported cone roof where the rafters are attached to the top of the shell, how do...
Hi all,
I have certain queries that I hope that the good people here will help clear out so that I may better understand
1) API 650 5.10.4.3 states that 'Rafters shall be designed for the dead load of the rafters and roof plates with
the compression flange of the rafter considered as...
Hello,
Currently designing a tank in which the shell bottom course comes out to 10 mm and all other courses are 6 mm.
Can I use a 10 mm plate for the bottom course and directly use 6 mm for the other courses, or is it a better engineering practice from a fabrication and operation point of...
