Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Vibrating foundation on solid rock

Status
Not open for further replies.

dynamicd

Structural
Joined
Apr 4, 2001
Messages
4
Location
US
I would like to know if we are analysing and designing foundation of elevated centifugal machine supported on solid rock, (and no soil layer),
What are the soil spring constants to be used?

As rock is lava derived and foundation is kept after blasting, I presume there is no damping effect to be considered.

Secondly I think the soil spring cannot have tension but only can have enormous compression.

Do we have to anchor foundation in rock, --- hope not!!
The machine weight is aprroximately 900 kips and total foundation weight planned to be 4500 kips with approximately 4 ft thick mat.
We can use SAP 2000 non linear program to analyse.
Please suggest some ideas and if anyone has dealt this type of problem before then shed some more light how it was done.
Thanks.
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top