CASE STUDY

Base for distribution centre

Permanent works

 

The background

Geobind was asked by ISG Retail to design a stabilisation solution for a new Amazon Distribution store for the Bristol region, complete with car park, offices, HGV parking and HGV loading docks.

The challenge

The location was an ex material fill site.The strata consisted of made ground/aggregate fill over peat. Another factor was a nearby estuary with a depth of 12m.

In order to use traditional stone construction methods to build the piling mat for the distribution centre a contractor, the client would have had to remove material to a 600mm depth and fill with suitable stone – this was not economically viable.

The results

  • Required strength: 30% CBR, strength achieved: 30%+ CBR across entire site
  • Approximately 50% cost saving
  • 3,000m2 Completed per day
  • Overall programme reduced from 135 to 45 days
  • Significantly reduced carbon footprint
  • Imported aggregate reduced from 137,000 to 26,200 tonnes
  • Export/disposal reduced from 137,000 to zero tonnes
  • Wagon movements reduced from 13,700 to 1,381

What the client said

I finally managed to get to site yesterday and I was delighted with the progress the main contractor has made. The main frame is progressing well and we are tracking well ahead on our programme. I had read and heard a lot about the Geobind stabilisation, but probably until yesterday didn’t fully appreciate the benefits. To have stabilised over 137,000m² of site with more than 70,000m³ of cut and fill in 12 weeks with the great CBR values is impressive. To see the prepared ground in the condition that it is now given its had Piling rigs, cranes, other plant and inclement weather to deal with is a real eye opener. I also didn’t realise that any arisings now coming from drainage channels, etc., will not be classified as contaminated as you would expect with traditional stabilisation. I would welcome the opportunity to sit down with yourselves shortly to discuss further opportunities together as the programme benefits, CBR values, site working conditions and efficiency generated all demonstrate considerable ‘value’ that can be attained going forward.

  • Reduction of programme time 67% 67%
  • Reduction in imported aggregate 81% 81%
  • Reduction in export/disposal 100% 100%

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