Julius,
API RP 2A section 6.9.1 says "Generally, for pile spacing less than eight (8) diameters, group effects may have to be evaluated.". This code is applicable for offshore platforms. I do not know whether this code is applicable to your application.
regards
Ashraf
On 12/09/2007, Micayas, Julius <jmicayas@riverconsulting.com> wrote:
Gents:
I am using 36" diameter hollow steel piles for my off-shore application; my pile cap requires
A total of 18 piles (i.e. 6 each row) going with the rule of thumb 3 x pile diameter, I ended up 9' center
which will give me a wider width.
Is there a code that specifies the min. spacing of piles?
Thanks,
Engr. Julius Micayas
P.E. license no.32969
Senior Lead Structural Engineer
Phone - 504-841-3014 (direct)
504 837-5275 (office)
Fax - 504-837-2986
E-mail: jmicayas@riverconsulting.com