Equiv Fluid Pressure

[BigH]

Just wondering why anyone is using EFP instead of the active and passive pressures . . . we never had EFP discussed in our fdn classes at uni.

 

[fattdad]

I first heard it used in the late 70s (i.e., as a geologist for a consulting firm). When I made it to graduate school (i.e., mid-80s) we talked about Ka and Kp and the EFP made sense.

f-d

¡papá gordo ain’t no madre flaca!

 

[BigH]

In case anyone is interested . . . - no macros.

 

[fattdad]

BigH,

very nice!

f-d

¡papá gordo ain’t no madre flaca!

 

[PEinc]

I may be wrong but I would think that EFP is used more by structural engineers than by geotechs.

http://www.PeirceEngineering.com

 

[SlideRuleEra]

I have to agree with PEinc. EFP is easy to remember how to use, if you don't do this type of calcs very often. It usually gives a conservative answer. And last, but not least, there are some situations when EFP is totally appropriate - say when dealing with water pressure , i.e. on a cofferdam.

http://www.SlideRuleEra.net

http://www.VacuumTubeEra.net

 

[vulcanhammer]

The only reason why I bring EFP up in Foundations is because the book I use (Coduto) does. I'm really not very fond of it and I let my students know it.

http://www.pz27.net

 

[oldestguy]

Hey Big H:

If you were working with the structural engineers I usually run into, you would find they would give you a quizzical look if you said use the active case. Gotta keep it simple for them.

 

[BigH]

thank god we have "other" issues with our structural types! We actually never had EFP in our university classes.