m2 Bearing Capacity to 600mm Plate

Question

m2 Bearing Capacity to 600mm Plate

P.qs (Structural)

(OP)

3 Dec 19 08:22

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. (Structural) · Answer 1 · 2019-12-03 10:26:21

hm...I do not really understand your question

P.qs (Structural) · Answer 2 · 2019-12-03 10:35:01

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.

RandomTaskkk (Structural) · Answer 3 · 2019-12-03 12:21:17

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

EireChch (Geotechnical) · Answer 4 · 2019-12-03 14:26:18

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

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m2 Bearing Capacity to 600mm Plate