Repad Sizing for Rectangular Opening in Tank
Repad Sizing for Rectangular Opening in Tank
(OP)
I have a situation where a 24" x 36" rectangular manway has been specified in a 1500 BBL (21'-6" diameter x 24'-0 high) storage tank.
How do I determine the proper size of reinforcing pad for this opening? API 650 forcuses mainly on round shell openings.
Thank you
How do I determine the proper size of reinforcing pad for this opening? API 650 forcuses mainly on round shell openings.
Thank you





RE: Repad Sizing for Rectangular Opening in Tank
RE: Repad Sizing for Rectangular Opening in Tank
Note particularly that you can figure the required reinforcing area as the "required" thickness times the whole size. And plate thickness above the "required" thickness can be counted toward that reinforcing. This means on most small tanks, the nozzles are inherently self-reinforced.
Check that the floor plate under the opening furnishes reinforcing equal to half the total required, as well.
I assume this is an API 12D (or is it F?) tank- in that case, I'd use API-650, App. A, with 70% joint efficiency to calculate shell thickness.
RE: Repad Sizing for Rectangular Opening in Tank
Steve Braune
Tank Industry Consultants
www.tankindustry.com
RE: Repad Sizing for Rectangular Opening in Tank
Steve Braune
Tank Industry Consultants
www.tankindustry.com
RE: Repad Sizing for Rectangular Opening in Tank
And that should be "hole" up there, not "whole".