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Re: Paving on grade

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If I understand you correctly, you are trying to accommodate a 70 metric ton (154,000-lb) live load with a 200 mm (7.87") slab reinforced with welded wire fabric.   
If so, the slab may not work.  Let's say, you put some large and thick "cushions" under the outriggers and check the punching shear in concrete and soil pressure under the slab.  With some reasonable (and not necessarily conservative) assumptions, these "cushions" appear to measure about 7.5' (2300 mm) square.
If the above considerations are not prohibitive, the bending of the slab itself may be verified using PCA Concrete Floors on Ground or ACI 360. 
Steve Gordin SE
Irvine CA
----- Original Message -----
Sent: Sunday, March 19, 2006 11:49 PM
Subject: Paving on grade

Good day to all
I am working on project, I have to design check existing plant paving ( 200 thk with two layer of wwf 150x150x6dia )  for 70 MT Out Rigger load (350Mt Crane), and improve the paving adequate to required capacity.  
Any suggestions or references are welcome.  
Lakshmana RK Nukala
Ph: + 974 - 4732633 / 5778637

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