Rectangular tank & notch in stiffener rings.
Rectangular tank & notch in stiffener rings.
(OP)
Need some help guys,
I am currently designing a rectangular tank. 5 m ht x 4 m wide x 7 m long placed on a structure 20 m high.
We have designed the tank using staad and provided it with vertical channel stiffeners and horizontal stiffeners. We designed the stiffeners considering vertical stiffeners as primary stffeners for the entire height of the tank and the horizontal stiffeners as intermediate stiffeners. Now we need to notch the stiffeners both horizontal and vertical stiffeners to accomodate the nozzles at some intervals. I wish to know if this local notching is acceptable????
I am currently designing a rectangular tank. 5 m ht x 4 m wide x 7 m long placed on a structure 20 m high.
We have designed the tank using staad and provided it with vertical channel stiffeners and horizontal stiffeners. We designed the stiffeners considering vertical stiffeners as primary stffeners for the entire height of the tank and the horizontal stiffeners as intermediate stiffeners. Now we need to notch the stiffeners both horizontal and vertical stiffeners to accomodate the nozzles at some intervals. I wish to know if this local notching is acceptable????





RE: Rectangular tank & notch in stiffener rings.
Last question ... have you checked the Code to see if it's acceptable to notch the stiffeners to the depth and at the intervals that you know and that we don't?
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RE: Rectangular tank & notch in stiffener rings.
Tank thk of wall is 14 mm with ISMC 250 as vertical stiffeners.
RE: Rectangular tank & notch in stiffener rings.
What pressure?
What temperature?
What fluid - or is it a fluid at all?
What are the penalties if (when ????) it fails?
How many could get hurt, what is the financial, civil, and technical penalties when it fails?
Open top? Closed? vented?
What steel, wood, or plastic are you using? Why? What reinforcement size width length weld method are you using?
Re-read your question and figure out if you can figure out just how somebody else can be expected to give you any useful advice and feedback?
A rectangular tank 20 feet on stands could be anything from Petticoat Junctions RR water tank - complete with the liability of 3x girls swimming 20 feet off the ground, to Bhopal's vat of poison surrounded by a slum with12,000 potential victims ....
RE: Rectangular tank & notch in stiffener rings.
That being said, racookpe1978 is correct. You must take into account all design factors that he mentioned plus all of the ones that you cannot think of (unknown unknowns) and take the conservative approach.
RE: Rectangular tank & notch in stiffener rings.