Thank you for the head start, especially John. I'm sure many others will also benefit from those links. You'll be pleased to know, I have met all code requirements and the computer has stopped beeping at me! So now I move onto optimising the design.
Cheers, Pav.
TTW2.. yes I have used my 'eng. judgement' and have eventually reduced the forces on the nozzles sufficiently. I found that transferring the expansions away from the nozzle area into a part with more flexiblity helped.
Just seems strange that trial and error is the best way to proceed...
Thanks pennpiper. We have good piping stress engineers, who will no doubt check my work. They have much experience and seem to rely on instinct, which unfortunately I am yet to gain.
..If only i had thought of googling a book earlier... yes there are many, just all i have read do not have philosopies of placing a support, of what type and what to do to eleviate stresses. I think I can sufficiently detect when the computer beeps at me to let me know of high stress levels...
I would like to know if there are any tips, guidelines or suggested books for the design of pipework. I am yet to find any sort of philosophy of where to place supports/guides and of what type, other than max distance between supports to meet code requirements.
The aim is to minimise loads on...
ye fair enough.. my wisdom isnt always conventional! anyway, I'm trying to work out the max load, would a partially blocked flow have a greater load due to the increased drag or shall i just use the hydrostatic head when fully blocked?
ye good point. I guess so, but have no info on the pump presently. Im also guessing it will have some sort of cut off too if the strainer becomes blocked?
right i've had my first thought.. if i just assume it is completely blocked, like a dam and just calc the hydrostatic head 7m deep that should be the worst case loading? is this correct?
I need to calculate the force exerted on a mesh for a sea water strainer. flow 15,000 kg/hr 7m x 3.2m flow area. 17 x 17 mm 2mm wire mesh. How can I calculate a force when clean and an estimate when blocked with fish!?
Any pointers would be much appreciated.
thanks,
pav
