Jump to content


Photo

6 minute solutions- geotech problem 71


2 replies to this topic

#1 terzaghi83

terzaghi83

    Project Engineer

  • Senior Member
  • 57 posts
  • Discipline:Civil

Posted 06 February 2012 - 02:14 AM

I have 2nd edition, 3rd printing of this book. there is no errata available but am stumped as to how they arrive at a the solution.

In my book, problem 71 states " A group of 30 in diameter caissons is constructed for support of a bridge. The group is arranged in a 3 by 4....."


If you have this problem please let me know if the solution makes sense. I'm trying to find out how the heck they say that it is 10 feet below the 2/3L distance to get to the midpoint of the clay layer.

Thanks.

#2 chess5329

chess5329

    Project Manager

  • Senior Member
  • 163 posts
  • Discipline:Civil

Posted 06 February 2012 - 03:41 AM

I don't have the book with me that I can check for the problem, but try to use the 2:1 method for a group of piles to see if works close to the answer.....I hope this helps.

#3 terzaghi83

terzaghi83

    Project Engineer

  • Senior Member
  • 57 posts
  • Discipline:Civil

Posted 08 February 2012 - 03:09 AM

Yeah, they use the 2:1 method to obtain the DeltaP. My question is how they come up with the distance from the 2/3 point on the caisson group to the midpoint of the clay layer as 10 feet.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users

=