Deep Foundation Text Suggestions

[AH11]

I have recently acquired several residential/commercial foundation design projects where the soils engineers are requiring either drilled cast in place piers, micropiles or helical piers.

I am a structural engineer and don't have vast experience in deep foundation design. Is there a good text that covers all of these foundation scenarios, or maybe different resources that are strong for each of the foundation types?

I need to educate myself about determining capacities of these foundations, do's and dont's, installation procedures, etc. I'm hoping for a resource with lots of design examples and discussion, not just theory and derivations of equations.

Thanks!

 

[jdonville]

AH11,

Check out the FHWA references for drilled shafts, driven piles and micropiles. See

http://isddc.dot.gov/OLPFiles/FHWA/009752.pdf

(Drilled Shafts),

http://isddc.dot.gov/OLPFiles/FHWA/009966.pdf

(micropiles)

Also, DFI has sample specification language available. See "Guide to Drafting a Specification for Micropiles", "Drilled Shaft Inspector's Manual, Second Edition, 2004" as well as several training videos for inspection personnel.

http://www.dfi.org/publications.asp

ABChance has literature on helical piles and piers.

http://www.abchance.com/

Finally, USACE EM 1110-2-2906 and TI 818-02 may be helpful. See

http://www.usace.army.mil/publications/eng-manuals/em1110-2-2906/toc.htm

and

http://www.wbdg.org/ccb/DOD/UFC/ufc_3_220_01a.pdf

Jeff

 

[BigH]

To add to Jeff's links, I thorough enjoy referring to M.J. Tomlinson's book "Pile Design and Construction" - Viewpoint Press. Also you can find much useful information in Poulos and Davis' book Pile Design Analysis - Wiley Press but they do look at things a bit differently.

 

[vulcanhammer]

I have most of these and then some at

http://www.vulcanhammer.net/download/

 

[oldestguy]

Hey Guys, don't forget Chellis "Pile Foundations". My edition is dated 1951., McGraw-Hill Book co. Lots of historical stuff about piles also. Mostly covers driven piles.

 

[BigH]

oldestguy - Chellis is the classic, no question, but sadly not readily available anymore. Our company had it but then it disappeared. I particularly liked the little suggestions that sprinkled the book - like when driving your H-pile in sand and it won't set up - weld in some plates between the flanges about 1/3 way up; . . . etc.

 

[GrumpyG]

For caissons:
Pricing should include a defined rock socket - 2', 5' etc.

There should be a defined LF of rock removal with the use of a core-barrel above the cost for an earth augerd caisson. Beyond the rock socket include:
50 LF of 36" dia caisson rock removal
25 LF of 48" dia caisson rock removal,
etc.
A ballpark footage is deduced from the Geotechnical Report. It should be relatively accurate, but conservative. It is easier to go ot the Owner with a credit, in lieu of an extra.

There should be add or deduct unit prices per caisson diameter :
36" dia caisson in earth and rock per LF
48" dia caisson in earth and rock per LF
etc.
The rock unit should be the premium to core barrel through rock in lieu of earth.
The earth unit price should include drilling, concrete, rebar, etc. If you drill 45 LF of 36" caisson in rock, a credit of 5' at the rock unit price will result.
If 10 caissons, 15'deep are designed, the net caisson depth is 150 LF. If during construction, 5 are drilled 10' deep and 5 are drilled 15' deep, the net caisson length is 125 LF. A credit at the earth unit price x 25 lf would be obtained.
This is the fairest way to price caissons. If the caisson contractor has to assume the risk for rock, his price will be inflated.