Inlet Design
Inlet Design
(OP)
Fellow designers
I am trying to find a little progem that will give me the inlet capsities of a chamber when given the required info.
e.g.
900mm RW pit with 300mm of grate volume removed and 150mm cover.
Either in a DOS based for or excel file
any help be great
Rj
(PS. Im in australia so metric would be a benifit)
I am trying to find a little progem that will give me the inlet capsities of a chamber when given the required info.
e.g.
900mm RW pit with 300mm of grate volume removed and 150mm cover.
Either in a DOS based for or excel file
any help be great
Rj
(PS. Im in australia so metric would be a benifit)





RE: Inlet Design
I'm afraid something got lost in the translation from Oz to Am. Do you mean a grated curg/gutter inlet 900mm long x ?? wide with approximately 1/3 openings with a 150mm curb??
The US Federal Highway Administration has data on inflow of curb and gutter inlets.
Best, Tincan.
RE: Inlet Design
Remember that the inlet grate acts as a weir at low flows and then as an orifice at high flows when there is ponding over the grate. Most grates are not designed, but bought, from an ironworks and come in locally "standard" sizes. Grate manufacturers may also have capacity data so don't overlook them too.
There is little point in designing a grate for a specific flow since you probably will not be able to estimate the flow to within plus or minus 30 percent anyway.
If you're not in the US or Canada, perhaps someone else on this forum can advise you where to look for such data.
good luck
RE: Inlet Design
RE: Inlet Design
say a 900mm x 900mm chamber with 300mm taken up with inlet bar.
RE: Inlet Design
RE: Inlet Design
RE: Inlet Design
No one procrastinated their way to the top
RE: Inlet Design
http://www.haestad.com/library/books/scmd/stormwateronl...
Go to the haestad methods website and enter the civil quiz. You could then select as a prize the 10 node culvert master or flowmaster program and use that for your analysis. Buy the book and you might get a 25 node program. Use a discount prize to get $100 off the book.
No one procrastinated their way to the top