Pile foundation for stability

[PSR_1]

Hello Guys!

I am working on a project where the building has only one semi basement. the building is more than 35 stories in height and it is suggested to use piled raft since the building isn't embedded enough to achieve lateral stability. the raft is sufficient for bearing capacity requirement. is there any way to decide the number of piles that are enough to stabilize the building against lateral loads or unbalanced gravity loads?

 

[SlideRuleEra]

Piles can resist lateral loads by bending at the point of fixity. If batter piles are used, they resist lateral loads by a combination of bending and axial compression. To get the soil properties to make the necessary calcs... that's why a geotechnical engineer's participation is essential.

Use of batter pile needs special consideration for seismic loading. They can be overloaded during an earthquake, possibly shattering the pile cap or breaking the pile.

http://www.SlideRuleEra.net

 

[HTURKAK]

Apparently , the soil is competent and bearing capacity for raft foundation is sufficient for the subject building.IMO, You should normally not need piling to achieve lateral stability.

There are high rise buildings without several basement storeys.

You may post more info. ( some sketches , geotechnical data, lateral loads etc ) to get more useful replies..