Any good detail of "Drop Boxes"

[watcon1]

Need a detail for a leach feild "drop box" that will be spec out for an application for fields on a steep grade.

I appreciate it.

 

[dik]

What is a leach field drop box? May know it by some other term? For steep slopes, I've often used a retaining structure or sloped embankment in conjunction with impervious clay as a seal and had the leaching bed slightly sloped.

Can you give me a hint about what a drop box is?

Dik

 

[watcon1]

Dik,

Thanks for the help. After investigation, the leach field drop box is very the same thing as a stormsewer manhole in which the invert of the incoming pipe is set higher than the outgoing pipe. Its application is used on side slopes that are steep.

I appreciate the help.

 

[dik]

OK... then the outlet invert should be a bit above the bottom of the catchbasin/manhole and the bottom filled with concrete to permit the bottom to be sloped and channeled towards the outlet invert... much like a manhole for a septic sewer. Is that correct?

Dik

 

[watcon1]

You got it. Care must be taken to set the necessary inlet and outlet inverts in order to maintain the leaching affect within the leach field tiles. Too steep or too shallow of a slope on the leach feild tiles would result in a poor design.

 

[dik]

The leaching bed would be designed as a common septic system, then?

Dik

 

[watcon1]

Correct

 

[dik]

Not a bad day... learned something!