Soil Bearing Pressure

[CCivileng]

Is a soil bearing pressure requirement of 350 kpa, considered high for H20 loading ? How would bearing capacity be determined on granular fill in the field.

 

[killswitchengage]

Its clear you have no idea what is soil mechanics , if it was that easy to answer this i wouldn't be working as an engineer. Get your facts by knowing the loading intensity provided by each column of your building . If you want to know the bearing capacity of a loose sand for ex then conduct some CPT or SPT test ...

 

[Ron]

killswitchengage....lighten up. CCivileng's specialty is civil engineering, not geotechnical engineering. Besides that, your reference to buildings has nothing to do with his posting. He is asking about H20 loading, which is related to bridge or pavement loading.

CCivileng....you need to expand on your question a bit. Why are you asking about bearing capacity as related to bridge and pavement loading? Is your question for purposes of some part of a bridge structure? An approach structure? The pavement?

Yes, 350 kPa is a relatively high bearing pressure; however, more needs to be known about the parameters. Is this a bearing pressure at the bottom of a shaft at some depth below grade? If so, keep in mind that bearing capacity increases with depth of adjacent overburden.

Please expand and explain your question a bit so that more reasonable feedback can be given in the forum.

 

[RobPE]

killswitchengage- regardless of your opinion, the tone of your response is totally out of line. Professionals come to this site for help, not to be belittled.

 

[Okiryu]

RobPE, totally agree with you.

 

[rconner]

[For perspective of English unit folks I think 350 kpa is about like applying a 50 pound force, or holding up a 50 pound weight, with the end pad of a man's thumb, or more than 7,000 psf -- I'd say pretty high! All have a good weekend.]

 

[BigH]

rconner - 350x20(approx) = 7,000 psf . . this is not an uncommon bearing pressure on Ontario clayey silt tills or, for that matter, on engineered crushed stone fills for bridge end abutments founded on the fill.