Flow Restrictor Computation??

[Jackscheele]

I have restrictor plat with an orifice located in the bottom of a standpipe located within a manhole. The horizontal orifice is 24" above the bottom of the manhole. As the water fills up he MH it enters the the orifice / standpipe to the outlet. My question is how to compute the flow through this orifice as the MH fills from a detention vault upstream.

 

[oregonpe]

See page 62 in the following hydraulics manual:

ftp://ftp.odot.state.or.us/techserv/Geo-Environmental
/Hydraulics/Hydraulics%20Manual/Chapter_12/CHAPTER_12.pdf

You will need to edit out the line breaks to use the link.

 

[Jackscheele]

Thanks, now I have a grasp of it