Foundation Design Using Sand/Gravel Pile

IN INDIA YOU MAY CONTACT THE FOLLOWING COMPANY---

KOHINOOR MORATAR AND MATRIX

email-amarkantakdevired@yahoo.co.in

tel-+91 761 4007106,cell-9827392958,9300115319

this company is manufacturing the READY MIX READY TO USE DRY CEMENT MORTAR FOR DIFFERENT PURPOSES LIKE--FILLING IN FOUNDATION AND PILES USING RATIO CEMENT 1 PART AND QUARTZ SILICA SAND (SUB ANGULAR AND CHEMICALLY INERT) 2 PARTS WITH OTHER ADDITIVES AND BINDERS FOR STRONG BONDING FOR PILES AS WELL AS THEY USE QUARTZ SILICA GRAVELS OF DIFFERENT SIZE FOR GRAVEL PILE INCLUDING SOME USE OF COARSE SILICA ETC. THEY CAN ALSO MAKE ACCORDING TO YOUR NEED.

THIS COMPANY IS MAKING READY DRY MIX MASONRY WALL PLASTER MORTAR,BRICK LAYING MORTAR,AND REFRACTORY-INDUSTRIAL MORTARS FOR LINING & PLASTERING ALSO USING HIGH GRADE CHEMICALLY INERT SILICA.

A sand or gravel pile is not a good foundation. It cannot resist uplift, lateral loads or eccentrically applied loads because it has no tensile or bending capacity.

My recommendation is do not use it.

Thanks for the suggestion SHUKLA, but the project location is not in India.

Yes, I am aware of this tensile and bending capacity of sand/gravel pile. Can you recommend me any books about this kind of foundation?

Hi

These kind of piles is for protection of liqufaction. there fore these piles uses only gravels or sands, its depens on dizayn.

if you have more piles you could fine subcontractor abroad, we made in turkey more than 1200000 m

have a nice work

Your English is better than my Indonesian! Do you mean piles as in pilings? Drilled piers into sand/gravel to support a foundation? This is quite different from a pile of sand/gravel! Please clarify...

I mean a pile of sand/gravel, not a concrete pile supported by sand/gravel layer.

Are we clear here? Any books recommendation?

I don't believe there are any books on sand/gravel pile design. If there are, I would be interested in hearing about it. In my opinion, the proposed pile is unacceptable for any serious load situation.

Such a pile should not be permitted! If you do decide to design such a pile, keep in mind that you will be responsible for the consequences.

Actually, the design using this pile is only an alternative. Of course I'm designing the common concrete pile too. But my boss asked me to make other alternative using sand/gravel pile or maybe combination of both concrete and sand/gravel piles. I thought one or more of senior engineers here might have designed such pile. Owh, the piles would be use to support water tanks. Someone private messaged me, and he knew something about using such piles for tanks, but did not recommend me any books..

Well, of course i won't design the piles if they can't be used to support the loads exposed to them, but how could I say that before I can calculate their capacity (if they have any..)? So that's why i am asking for help here, maybe someone has designed it before and can recommend me some books..

I'll wait for the posts, if in few weeks nobody can mention any books, maybe there's really no books out there on sand/gravel pile design.. :)

Let us assume you successfully install sand/gravel piles under a water tank. Probably the gravel will develop some skin friction against the soil face (suppose it is clay). It may also develop some bearing pressure at the base of pile if the clay not disturbed by the auger. Skin friction and end bearing values are likely comparable to those of a concrete pile.

With a concrete pile, axial deformation over the length of pile is negligible. Axial deformation of a sand/gravel pile depends on how well it is compacted. The upper part of the pile settles more than the lower part and this means the water tank settles until the granular material is sufficiently consolidated to carry the load.

If, for some reason, future excavation is required adjacent to a concrete pile, there is no problem because engineers typically ignore skin friction in the upper strata (skin friction = 0 in the upper five feet). If excavation is required adjacent to a sand/gravel pile, the entire pile becomes unstable and will likely collapse unless special measures are taken to prevent it.

The savings in using sand/gravel piles instead of concrete piles are minimal. It is not clear to me why anyone in his right mind would elect to use such a foolish design.

Thanks for the consideration ba/ael. Like i said before, i am aware of the non-monolith material of sand/gravel behavior, this is why we really can't compare them to concrete pile. Thanks again ba/ael.

Any books to be recommended?

I have seen flexible (plastic) water tanks (up to 1M gal) built on a 4'-5' layer of fine sand, smoothed out flat on top, but I don't know of any books on the topic.

kohinoor product for sand and gravel piles is a branded product of their company hence gives guarantee for their products.Their products are also anti corrosive if used with iron /steel,using certain grade of other additives for strong physical and chemical results.

you can see also, following literatures for aggregates for your ready reference;

specification for coarse and fine aggregates from natural sources--INDIAN STANDARD:383-1970(reaffirmed1997)

Specifications-- IS-460(Part1)-1985,IS- 1917-1962,IS-1987-1974

CEMENT WATER PROOFING--IS-2645-1975

chemical analysis of quartzite/high silica sand -IS-1917-1962

THE ABOVE SAID INDIAN STANDARDS WILL CLEAR YOU THE DETAILS ABOUT SILICA SAND ,AND GRAVELS .

FOR YOU ARE INFORMATION THAT SUB ANGULAR SAND AND GRAVELS ARE BETTER THAN ROUND ,SUB ANGULAR GIVES STRONG HOLDS.

NO OTHER ALTERNATIVE SOURCE IS BETTER THAN ABOVE ASKED SILICA,QUARTZ SAND GRAIN AND GRAVELS DUE TO THEIR CHEMICAL INERTNESS AND HIGH ELECTRIC AND HEAT(ENERGY)RESISTIVITY.

IF IS THERE ANY MORE QUESTION AFTER READING THE ABOVE SAID SPECIFICATIONS YOU ARE FREE TO CONTACT THROUGH CR4.

ARUN SHAILENDRA SHUKLA

I am also in the position to review a design based on gravel pilles. There is a huge number of it, and they are used to improve to foundation condition on high embankemtn of a highway.

Do you have any sugestions? or books to recomend?

please send me an e-mail to

alecu260579@yahoo.com

Here's a book that talks about sand/gravel piles. I'm not sure if it goes into the level of detail you need, but might be worth checking out.

Structural Foundation Designers' Manual

By William George Curtin, Norman Seward, Gerry Shaw, Gary Parkinson, J. Golding

Here's a link to an exerpt: http://books.google.com/books?id=wu_e-KnkBPgC&pg=PA153&lpg=PA153&dq=gravel+piles&source=web&ots=aekO6ZqHBL&sig=ZP_7SHGkYTryti8QIAuqtshFSdk&hl=en&sa=X&oi=book_result&resnum=8&ct=result#PPA152,M1

Welcome aboard! Thanks for the good link, even though it isn't my question, because I may need to know something about it someday.