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Hi guys. I have a situation where conduit be connected using flexible conduit mid-length of the conduit. In my case here, the flexible conduit is connecting the conduit embedded in slab with the conduit embedded in brick wall (highlighted in yellow refer pic). My questions are: 1) Is this...

Thanks for correcting me. I agreed. This issue started with less information known in the first place. Perhaps i will have further discussion with the designer for their point of view.

Thanks Littleinch and Hturkak for the replies. Mathematically the total head loss for 180mm pipe is for sure lower compared to the one that is 160mm. My another concern is, i believe it is not a common practice where pipe from a pump at mid line got increase in size (correct me if im wrong). I...

Hi guys. I'm wondering if this kind of installation will possess issues/ effects in the future. I have a pipe from pump run below structure 160mm OD PN10 (HDPE) that has already been installed after some time. Based on the drawing, it will be connected to a pipe serving an area that is sized at...

Sorry for the late follow up. Thanks littleinch, 1503-44 and edstainless for all the helpful replies. Based on the nfpa kit, i now know that it is possible to interconnect multiple tanks even for vapor withdrawal system and the valve arrangement shall be as per suggested in the NFPA Compliance...

Thanks @1503-44 & @LittleInch for the kind replies. Sorry if my question is a bit unclear. Let me start over. There are 3 question that is really confusing me. 1) Let say the maximum gas demand is 9 MBtu/hr and there are 3 propane tank be used. Is it correct to assume that each of the tank...

Hi guys. I'm currently just involved in propane bulk storage sizing and designing course. Here is a case study where I need to design 3 numbers of propane bulk storage each having a capacity of 4000 gallon and be interconnected. The situation is I need to design storage system without using any...

Littleinch: Thanks for the reply. K1, K2 and K3 refer to the manhole. The yellow pipe are flowing to the manhole. As in the attached picture, there are details of the manhole such as invert level, manhole depth and etc. What is the reference of this measurement and how to check on site to ensure...

Greetings to respected engineers. For an early note, I'm only recently involve and new in underground building sewage plumbing. I have a question on how to clearly interpret manhole invert level on site. Let say, I have soil pipes directed to external building manhole and based on civil drawing...

I see. Actually the sketch is an idea of how its gonna lay on site. Thanks for your input anyway. Highly appreciate it

Hi all. Kindly refer attached picture for details. I have these two chilled water pipes that need to be located at certain location and passing below structure beam. My question is, is there any standardized way of doing it? My options would be: 1) Resting the pipe on ground (Do we need to...

LittleInch, thanks for your reply. As a fresh grade engineer sometimes I overlooked the basic of fluid mechanics. Its the elevation that cause the pressure difference even within inside the pipe. The specification just mentioned the 175 psi for sectional test (which we have done earlier) and...

Hi! I'm currently conducting a hydrostatic pressure test for hot water piping which consisted of a return and a supply line. The covered areas for the tested pipe is from Level 1 to Level 3. For this leak test, cold water is used as its fluid. Attached below is the basic pipe network of our...

LittleInch, Thanks for your input. I have talked to my client regarding the requirement and explaining the situation to them. They also realized that the requirement is troublesome and not practical for this particular case. They then allowed us to test it using 8 bar for 24 hours and passed...

Thanks pennpiper and LittleInch for your reply. I'm assuming that when the pipe length is shorter,volume inside the pipe become smaller. Thus making its harder to pump a certain amount of water inside until it reach 12 bar. Even after we pumped it to 12 bar, it wont hold the pressure for 24...

Hi! I'm an engineer working for construction industry and currently having difficulties to determine the suitable test pressure for our internal water reticulation system. The pipe that we've used is Stainless Steel Schedule 40S TP304. For usual section test (done it by divided sections of...