m2 Bearing Capacity to 600mm Plate

[P.qs]

Hi,

Im new to this. We are having a discussion in our office in a field were not very experienced in. If a plate test was carried out with a 450mm Plate or 600mm Plate, for ground which requires 100kn/m2 load capacity, what should the plates be tested to including a standard UK factor of safety?

Thanks.

 

[klaus.]

hm...I do not really understand your question

 

[P.qs]

Klaus,

Thanks for your reply. The ground is to achieve 150KN/m2. What KN should be loaded on to a 600mm plate to achieve this? This is probably a simple question for someone experienced in this.

 

[12345abc6ttyui67]

I think you are dabbling along way out of your comfort zone if you're not able to work this out.

 

[EireChch]

You’ll need to call a geotechnical to assess the result, judging by your question.

In short, 3 times your allowable so 450 kPa. Work out the load to get that amount of pressure over the area of your plate.

Also, plate bearing tests are a waste of time for assessing bearing capacity. You’re only assessing the soils to 2 times the plate diameter. So to 900mm or 1200mm.

A borehole with lab testing / SPTs or HDCP (if in granular) would be better