Micropile ends in rock
Micropile ends in rock
(OP)
Hi Everyone,
I am designing bored, reinforced concrete micropile that ends in marl(rock). Above the marl is a 3 meter thick layer of compressible clay.
Can somebody recommend the formula for calculate miropile bearing capacity?
I am designing bored, reinforced concrete micropile that ends in marl(rock). Above the marl is a 3 meter thick layer of compressible clay.
Can somebody recommend the formula for calculate miropile bearing capacity?





RE: Micropile ends in rock
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RE: Micropile ends in rock
My idea is to underpin the foundation by a set of reinforced concrete (micro)piles (diameter - 25cm).
Can i calculate them in the same way as piles?
RE: Micropile ends in rock
RE: Micropile ends in rock
RE: Micropile ends in rock
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RE: Micropile ends in rock
RE: Micropile ends in rock
PEinc, by bond in the rock socked, you mean that the grout should be injected under pressure?
RE: Micropile ends in rock
type 1 : just concrete or grout
type 2 : same reinforced with a steel tube or re-bar
type 3 : reinforced with a steel tube allowing IGU pressure grouting(unique global grouting from the top pf the steel tube
type 4 : reinforced with a steel tube allowing IRS pressure grouting (repetitive and selective grouting)
They get a higher capacity going from type 1 to type 4.
RE: Micropile ends in rock
Franki piles would probably be too expensive. There is a limited number of contractors who install Franki piles. Many more contractors install micropiles.
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