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pre-cast piles spacing
i'm currently doing a design for the foundation of a six storey building using pre-cast concrete square piles 0.45m x 0.45m x 18.2m long. i have searched through several references and found out that the required spacing ranges from 2 to 3 times the diagonal dimension of the pile.
i would like to know what is the maximum allowable spacing for the piles?
thanks and best regards.
find a job or post a job opening
the maximum spacing depends on your loads, how you will support the loads between the major column/wall loads (are you connecting pile caps with grade beams or will the foundation include a pile-supported mat), the compression capacity of the pile, and the tension capacity of the pile, if needed for overturning or uplift.
as an addendum to my colleague ron, i have used pile spacings in the order of 10 or more with the piles being connected by a grade beam. why so far apart? i had 25 ft of soft clay, 10 ft of compact sand and >100 ft of soft clay. i was founding the piles in the sand and i wanted the spacing large enough so that there would be no overlap of stresses that could be transmitted as a "group" to the clay below. it worked; haven't heard "boo" from anyone for 13 years.

2009-09-15, 02:05 PM	#1
huangyhg 超级版主注册日期: 04-03 帖子: 18592 精华: 36 现金: 249466 标准币资产: 1080358888 标准币	pre-cast piles spacing pre-cast piles spacing i'm currently doing a design for the foundation of a six storey building using pre-cast concrete square piles 0.45m x 0.45m x 18.2m long. i have searched through several references and found out that the required spacing ranges from 2 to 3 times the diagonal dimension of the pile. i would like to know what is the maximum allowable spacing for the piles? thanks and best regards. find a job or post a job opening the maximum spacing depends on your loads, how you will support the loads between the major column/wall loads (are you connecting pile caps with grade beams or will the foundation include a pile-supported mat), the compression capacity of the pile, and the tension capacity of the pile, if needed for overturning or uplift. as an addendum to my colleague ron, i have used pile spacings in the order of 10 or more with the piles being connected by a grade beam. why so far apart? i had 25 ft of soft clay, 10 ft of compact sand and >100 ft of soft clay. i was founding the piles in the sand and i wanted the spacing large enough so that there would be no overlap of stresses that could be transmitted as a "group" to the clay below. it worked; haven't heard "boo" from anyone for 13 years. __________________ 借用达朗贝尔的名言：前进吧，你会得到信心! [url="http://www.dimcax.com"]几何尺寸与公差标准[/url]