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Greetings to all fellow engineers! I'm currently doing a project on utilising satellite-based atmospheric sounding profiles (e.g. parameters such as temperature, pressure, humidity) for civil engineering applications. I've been doing up some reading and realised that there has been minimal...

my pipeline diameter (run diameter) is about 7ft, run length about 5ft , branch diameter is 4ft with the branch length of 2ft and it carries water (liquid). My initial pressure at inlet is 230psi and a relatively slow flow of 1.6 fps. Based on what I calculated, it seems the pressure loss over...

Ok, I have managed to create an Excel template to help me compute. BigInch, do you know of any pressure drop limits for large diameter pipelines? It seems like my pressure drop value is quite small though.

ok. I understand it now. Thank you so much BigInch. I felt i have gained a lot from your comments. Thanks stanier as well.

ok i understand, since K is just a modification of the f(L/D) term. Better to go back to basics. But now i'm stuck with a problem, how do I calculate pressure of a point in a flowing pipeline? It has static and dynamic pressure components? Say, for an underground buried pipe?

hmm, but i came across it in some piping articles that suggested using the K (obtainable from Miller chart) instead of f(L/d) to obtained additional losses due to fittings such as that of tees. Am I not supposed to do that? Also, your emphasis on knowing the flow rate for my design is that the...

let me try to answer my own question, correct me if im wrong guys. 1) the headloss equation for fittings, HL = K(v^2)/2g is for the head loss through the section of the branch pipe. 2) Division of flow for tee fitting, i'm supposed to use ratio of pressure drops. I've read that for reducing...

hi guys, i've been trying the manual calculations and could i ask, in the equation of headloss (HL) = K(v^2)/2g, where does this headloss represent? between the start of the run pipe to the end of the run pipe? how do i then find the head loss between the section of the branch pipe? and also...

hi guys, i've been trying the manual calculations and could i ask, in the equation of headloss (HL) = K(v^2)/2g, where does this headloss represent? between the start of the run pipe to the end of the run pipe? how do i then find the head loss between the section of the branch pipe?

thank you so much BigInch and stanier! will do the manual calculations for this first and attempt the software in awhile! thanks again guys.

i see, so using the pressure difference, i can find the diameter of the branch pipe

oh, so u mean i need to compute the pressure drop first? how do i find the pressure drop for a reducing tee?

ok i managed to go to the library and dig out a book "Flow of fluids through valve,fittings and pipe". They gave the an equation for flow of fluid through nozzle and orifices. There is a diameter term inside, so I'll just use it to compute?

do you have any idea for reference that i could use to obtain the flowrate/pressure drop process?

Hi all, I'm quite new to piping engineering, and I've been tasked to determine the sizing/diameter of a branch pipe for a reducing tee junction. Are there any equations that I can use to compute this? I've seen some of the ASME B31.3/31.4 and I am not sure as how it is governed. for...

Hi André, I agree SPT for soft clays would be impractical to use for such correlations. Yep, I would guess that it would be a good route to go about estimating the pile shaft friction from SPT N using CPT, considering the fact that . While a formal direct correlation between the pile shaft...

Hi André, The link works fine now, just downloaded the spreadsheet. Don't worry about the Bustamante method article, I should have a book for reference lying around. What about cohesive soils? Got any idea as to how the relation measures up? Thanks, Ben

Hi André, Yep that correlation would be plausible. What made you choose the relation establish by Robertson & Campanella as well as Bustamante & Gianiselli? I'm interested to get the file that you uploaded, but when I click the link, the file does not load. Is there any other way to get the...

thanks fattdad, I'll look up terzaghi's lecture! emmgjld, in fact i'm looking into different types of piles thats available and currently trying to pick up equations relating to different types of piles, and different piling methods. Thereby, I would be able to, hopefully, tabulate a table that...

Hi all, I recently have been involved in a research on deep foundation engineering. One of the issues that came up was: Is there currently a relation of Piles side resistance to SPT N? Or for that matter, CPT values? Note that side resistance,skin friction, side-shear resistance mean...