Recent content by JJAV1983

AISC- Interpretation Hello All, I was hoping you could shed some light on this question regarding bolt pre-tension in AISC-Steel Construction manual - Table 7.1 If the required minimum Bolt Pre-tension for Pre-Installation Verification per Table 7.1 AISC Steel Construction Manual is = 37 kips...

HI TimSchrader2 - JStephen Thank you for your suggestions, it has been brought to my attention that the best standard when fabricating and designing something like this is API-4F (Drilling and Well servicing structures) just for your future reference. Cheers!

Hi JStephen - msquared48 This is going to be mounted on an International Workstar 7400 truck which is part of a Geotechnical drill serving in Canada. The industry serving: Environmental and Geotechnical drilling. JJAV

Hello, I was hoping you can help me by letting me know under which standard the attached steel structure should be built under. The structure is made out of steel A500B. Thanks a lot, JJAV https://files.engineering.com/getfile.aspx?folder=049424f6-4c34-4eb0-9f8b-f952ca497163&file=13741.JPG

Hello, We just received a gearbox with a chain drive ratio of 4.73:1. On top of this GEARBOX, there is a 4-speed transmission and a hydraulic motor to drive it. One of the most common combinations RPM/torque in this GEARBOX is 781 RPM / 681 FT-LB TORQUE (gearbox output) The question is the...

I am sorry if I am not understanding this correctly, all I want to know is if the standard for A105N is listed in Section II of the ASME BPV code.

Thank you metengr, that's the thread I was talking about, however I don't see anywhere if the standard for a105N is listed in Section II of ASME code. This is what B16.9 says for MATERIAL..."Wrought fittings covered by this Standard shall be in accordance with ASTM A234, A403, A420,A815 B361...

Yes, you are right, I was just wondering why it is not very common to see it in low to medium pressure application systems. I see that in the past you answered a question about SA105N material, do you happen to know if the standard this material is fabricated under is listed in Section II of...

HI, I haven't seen that many many companies use A135-A pipe for pressure piping applications. However after going through all calculations as per B31.3, using that specific pipe falls under code. (maximum design pressure 350 PSI), is there anything so obvious that I am missing?

Thank you for all you answers, increasing the thickness of the fitting to sched.160 eliminates the problem, now I comply with B31.3

Hi, I was hoping to get some help here. A class 300 nipple (2 in sched. 80) I chose for my design (Class 300), is capable of holding 1500 psig of pressure from (-29 to 66 Celsius). However when I calculate this nipple as per B31.3 having into account: 12.5% under tolerance allowance, 0.118...

Thank you LittleInch, I thought so, I got confused because a person that has been involved in this type of work told me that it was considered a pressure vessel. Regards,

Hello, Would an air/water manifold subject to 350 psi of pressure considered a pressure vessel? Basically the system has four 2 in pipe inputs all connected to a common 4in output. Rough dimensions and sketch attached. If this is considered a pressure vessel? Under which code should it be...

LittleInch, Thank you for your answer, the reason I am taking that 25% off is because the customer wants some valves to be threaded instead of welded/bolted. Do you or e_n_i_t happen to know what the inherent FOS is? Thanks, JJAV

One more question about this, I want to make sure my calculations are correct: 1. To get the minimum thickness I used tm=t+c as per ASME B31.3-2008 2. To get t I used 301.1.2 (3a) using the following data: P=350 PSI, D=4.5 IN, S=16,000 PSI, E= 0.85, W=1, Y=0.5 After plugging those numbers into...