Graded Filter Design 2

[cdale]

I am working on a project involving an infiltration gallery, also refered to as a very large drainfield. I have done some calculations for the graded filter I need to place between my drain rock and native soil to prevent clogging and I have selected the material I need to put in the gallery, however the reference I am using for my design calculations seems somewhat dated as well as limited on information. I was wondering if anyone could recommend a good reference/resource for graded filter design so I might be able to verify my calculations??

Has anyone ever designed/constructed a large infiltration gallery before? I wouldn't mind hearing about it. The one we are building is 140x70 feet, and 15 feet deep, it is big.

 

[GeoPaveTraffic]

I recommend Foundation Engineering by Peck, Hanson, and Thornburn. In my addition it is discussed on page 49.

Also, any book on dam design should have a section on graded filters. I would not worry about the age of the refference, it's not like filter requirements have changed.

 

[jdonville]

cdale,

See the 1987 USBR "Design of Small Dams" pp.218-220. This is available for download at

http://www.usbr.gov/pmts/hydraulics_lab/pubs/manuals/SmallDams.pdf

.

USACE EM 1110-2-2300 Appendix B (available from

http://www.usace.army.mil/

) also discusses filter design.

Jeff




Jeffrey T. Donville, PE
TTL Associates, Inc.

http://www.ttlassoc.com

 

[BigH]

Actually filter design in some cases has changed - especiallyl for fine grained and silty sands. Work by Kenney (University of Toronto in 1985), Sherard (1984) and others caused a number of changes. I suggest you see Conduto's book "Geotechnical Engineering, Principals and Practices" table 8.2. Also, in addition to the USACE manual given by jdonville, check out USACE EM 1110-2-1913, Appendix D. You can also do a search and get the US Dept of Agriculture's National Engineering Handbook, Part 633, Chapter 26, Oct 94. Finally, another reference that has some nice things in it is:

http://www.linq.com/geotex/technote/tech9.html

.