DIFFERENCE OF CATCH BASIN AND SUMP

[hanxi]

Hi to all, goo day… Im confused with the term "catch basin" and "sump"… Ive tried to find its definitons but still im not in disarray… Is sump and catch basin the same or sump is a part of a catch basin? Thanks for any comment...

Hanxi

 

[hydroponder]

A sump can be used in conjunction with a catchbasin to trap settlement before stormwater exits the catchbasin via a pipe. Generally speaking, the catchbasin in constructed an additional 1 to 2 feet below the outlet elevation of the pipe. The portion of the catchbasin below the outlet pipe is considered the sump and is essentially a sediment trap. The sump can then be cleaned out by a vacuum truck or with a good old fashion shovel.

 

[TerryScan]

Terminology can vary by local. In terms I am familiar with:

Catch basin = drainage inlet (a surface opening which collects stormwater runoff into an underground collection system).

I am familiar with hydroponder's use of the term 'sump'. However, a it is also a common term to describe the location of a catchbasin with respect to roadway grade.

When a catchbasin is located in the curb of a street along a slope portion the catch basin is "on grade".

When a catchbasin is located at the low point of the road/street it is "in the sump".

There are separate calculation methods for determining the amount of runoff captured and the depth of flow depending on whether the catchbasin is located "on grade" or "in sump".

 

[bimr]

Some common definitions:

A catch basin is a chamber, well or inlet designed to collect rain water which includes systems to collect debris and sediment and prevent the clogging of sewers

Catch basin: a depression, trench, or pit, which is a collection point for drainage, either water or spilled oil, that provides a means of containment for and prevents the uncontrolled discharge of the collected liquid from a facility or oil storage area.

Sump: a depression or trench constructed to collect drainage of water or spilled oil from storage, transfer or unloading areas.

In summary, the definition depends on the application and industry. A catch basin usually has an outlet to a drainage system. A sump usually does not have a gravity drain out of it.