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existing foundation wall abutting a new found. wall
we are putting an addition on an existing building with no basement. the addition will have a basement. how do we reinforce below the existing footer (aprox 3 ft below grade) and not diturb earth below; so we can dig for the new footer (approx. 12 ft below grade). the new block wall will need to be flush against existing block wall above grade. i need a detail.
thanks in advance!
d. hutchison
underpinning is in your future
other option
pull basement away from existing footing to get out of the influence zone. construct a 4' to 6' wide section of slab on grade then start the basement.
underpinning methods may vary depending upon the soil conditions that you are dealing with. as sperlingpe said, moving the basement away will potential save significant money.

2009-09-09, 08:54 AM	#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	existing foundation wall abutting a new found. wall existing foundation wall abutting a new found. wall we are putting an addition on an existing building with no basement. the addition will have a basement. how do we reinforce below the existing footer (aprox 3 ft below grade) and not diturb earth below; so we can dig for the new footer (approx. 12 ft below grade). the new block wall will need to be flush against existing block wall above grade. i need a detail. thanks in advance! d. hutchison underpinning is in your future other option pull basement away from existing footing to get out of the influence zone. construct a 4' to 6' wide section of slab on grade then start the basement. underpinning methods may vary depending upon the soil conditions that you are dealing with. as sperlingpe said, moving the basement away will potential save significant money. __________________ 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]