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Showing results for tags 'foundation bearing failure'.
Found 5 results
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For calculating the bearing capacity of soil (using N values), the equations for mat foundation and single footings is the same or its separate for each??
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Dear Safeians I ma working on a 22 Storey Building. we have assume a Raft foundation of 5' for it. Net bearing capacity after overburden relief is 8kip/ft2. And i am getting 10Kip/ft2 soil pressure under service loads at some locations. one of my friend said use stress averaging to minimise the values as these soil pressures are nodal results of finite elements. do somebody have any clue how to do that using safe .. or Excel. stress distribution.bmp
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Dear All, I am modeling the raft of 11 storey Commercial + Residential building. The Plan of raft is attached in Jpeg format. Problem is that in periphery where basement wall is located and in the locations where shear Walls are modeled soil pressure is exceeding 3 times the allowable soil bearing pressure. The exceeding pressure area is hardly 10 percent of the total raft area. The reactions are even more in center of the raft but pressure is more in periphery. I am unable to understand this behavior. Kindly advise. Pressure Diagram is also attached in jpeg, yellow and red areas are the one where pressure is exceeding. Regards, Ahsan Ali
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High Loads under Columns and Bearing Capacity Failure
muneeb1213 posted a topic in Foundation Design
I m designing a 4 storey building on a poorly graded sand with SPN value of 5 and allowable bearing capacity of 0.5 tonn/sq.ft..... for the mat foundation, i provided beams of 18 x 36 and mat thickness as 24 inches ... however the soil pressure are still above safe bearing capacity.. My question is should i assign line spring property to the footing beams or not??? The area of footing is also increased but the stresses are still high... -
Respected Engineers! what is the procedure to check soil pressure on safe and by using which combination. what is the procedure to pass soil pressure?
