Keller Group Plc · LSE:KLR
Keller — Corporate Update (2008)
14 slides from Keller's corporate update, 2008
Slide 1: Keller Group plc - Keller Ground Engineering
Keller Group plc Keller Ground Engineering Derek Taylor/Trevor Snell
Slide 2: Agenda
Agenda • Introduction to KGE • Background to award of Olympic Stadium contract • Original scope of work • Keller’s alternative solution • Summary
Slide 3: Introduction to KGE
Introduction to KGE • UK’s leading independent specialist ground engineering contractor • Distinguished by its ability to offer tailored solutions • Broad product range enhanced by two recent acquisitions – Phi in 2006 and Systems Geotechnique in 2007 • 2007 revenue of circa £80m • 800 employees ope
Slide 4: Background to award of Olympic Stadium contract
Background to award of Olympic Stadium contract • Many of the world’s top sports stadia supported by Keller foundations: – e.g. Manchester – Commonwealth Games; Sydney – Olympics; Dallas – Dallas Cowboys Stadium • KGE has good local knowledge and an excellent track record with the team (contractor a
Slide 5: Original scope of work
Original scope of work • 5,000 pre-cast piles and CFA piles • Why choose pre-cast piling? – at least three tenders could be sought – pre-cast particularly suitable for uplift loads (during construction) Pre-cast Piling Conforming Solution
Slide 6: Keller's design and construct alternative
Keller’s design and construct alternative • Required loads and performance considered • Alternative solution designed by KGE combines three techniques: – Driven Cast In Situ (DCIS) piles where high loads required – Continuous Flight Auger (CFA) piles to deal with uplift and wind load – Vibro Concret
Slide 7: Driven Cast In Situ construction sequence
Driven Cast In Situ construction sequence • Steel tube driven to depth • Reinforcing cage lowered into place • Concrete poured into tube • Steel tube removed • Expendable shoe provides clean base
Slide 8: Continuous Flight Auger
Continuous Flight Auger Benefits of CFA • Versatile system – can be used in most soils • Quiet and low vibration • Well understood by engineers • Necessary for retaining wall locations and high loads
Slide 9: Vibro Concrete Columns
Vibro Concrete Columns Benefits of VCC • No spoil • Low noise and vibration • Rapid production – reduces programme time • Shorter than ALL other systems • Less costly than piling
Slide 10: VCC construction sequence
VCC construction sequence
Slide 11: Why did the Keller alternative succeed?
Why did the Keller alternative succeed? • Buy-in from Team Stadium • Price and programme advantages – around 25% saving against the price of the conforming scheme – programme time reduced by around six weeks • Use of alternative systems better suited to site conditions – DCIS extremely robust and ca
Slide 12: Sustainability and environment
Sustainability and environment • No spoil - no muck away lorries • Locally-produced concrete (ODA supply) - piles not transported by road • Re-use of materials in concrete (PFA and GGBFS) • DCIS and VCC systems are shorter than other systems, so use less materials
Slide 13: Summary
Summary • Broadest product range in the industry • Design and construct capability a big advantage • Excellent industry relationships • Importance of local knowledge • Good prospects for further work related to London’s 2012 Olympics
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