Underpinning a 5 storey Apartment in London

Underpinning a 5 storey Apartment in London

Value: £500k<

Size: Over 400m2

Duration: 36 weeks

Scope of work : 

  • Full design and build underpinning scheme
  • Demolition and Construction of reinforced concrete retain wall on an integral part of underpinning scheme
  • Pile raft underpinning scheme for 2 large mansion blocks including a large existing chimney cantilevering from the rear elevation

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Piled Raft Underpinning to 3 Blocks in North West London

Piled Raft Underpinning to 3 Blocks in North West London

Value: £300k<

Size: 500m2

Duration: 18 weeks

Scope of work : 

  • Full underpinning scheme design
  • Demolition and removal of existing floor structure
  • Temporary works and demolition of earth retaining walls
  • Restricted access mini piling
  • Construction of voided raft underpinning slab
  • Construction of reinforced concrete retaining wall
  • Removal of temporary works
  • ASUC Guarantee

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Design and Build Pile Raft underpinning for a large Victorian Semidetached Villa

Design and Build Pile Raft underpinning for a large Victorian Semidetached Villa

Value: £125k<

Size: 115m2

Duration: 16 weeks

Scope of work : Pile raft underpinning design and build solution

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Pynford Beam for a Hotel refurbishment

Pynford Beam for a Hotel refurbishment

Value: £60k<

Duration: 12 weeks

Scope of work :

  • Temporary and permanent design for reinforce concrete beam
  • Design, supply and installation sacrificial pynford stools
  • Reinforcement detailing and couplers for the follow on works.
  • Construction of Pynford beams and piles by others
  • educed level excavation

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Basement Creation Beneath Grade II Listed Town Hall in St Albans

Basement Creation Beneath Grade II Listed Town Hall in St Albans

Value: £700k<

Size: 200m2

Duration: 34 weeks

Scope of work :

  • Temporary works design and stability calculations
  • Construction of excavated reinforced concrete Underpins
  • Reduced level excavation
  • Creation of links between basement areas
  • Ground bearing basement slab
  • ASUC guarantee
  • Works undertaken for a leading national contractor

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Open site Basement adjoining sensitive structures in Marylebone

Open site Basement adjoining sensitive structures in Marylebone

Value: £1m>

Size: 210m2

Duration: 34 weeks

Scope of work :

  • Full design with finite element analysis
  • Installation of penetration Bored Pile Wall
  • Reduced level of excavation and trimming of existing foundation
  • Temporary propping
  • Below slab drainage and sumps
  • Reinforcement concrete works including Basement slab, composite lining walls and ground floor soffit slab
  • Water resisting concrete additives
  • ASUC guarantee
  • All undertaken through restricted access archway

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3 Storey Retro fit Underpinning Basements in Kensington

3 Storey Retro Fit Underpinning Basements in Kensington

Value: £2m<

Size: 320m2

Duration: 83 weeks

Scope of work :

  • Design of temporary works, piling and transfer structure
  • Demolition and Excavation
  • 3 level reinforced concrete, underpinning to entire parameter
  • Lower ground floor level transfer slab
  • Restricted Access temporary and permanent works piling
  • Top down construction sequence
  • Replacement of existing installation
  • Supply installation temporary works
  • Below slab drainage sumps and lift pit
  • Water resisting concrete additives
  • ASUC Guarantee

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Kender Phase 4

Kender Phase 4

Value: £1.25M<

Size: 9 slabs totalling 5420m2

Duration: 24 weeks

Scope of work :

  • The design and installation of piled non-voided Comdeck slabs for flats, offices and housing
  • The installation of 1213no 300mm diameter CFA piles, ave. 7m deep, with a 13.5t midi piling rig
  • The installation of 240no 250mm diameter CFA piles up to 23m deep with 35t piling rig
  • The construction 225 and 300mm thick reinforced concrete Comdeck slabs incorporating the Abbey Pynford galvanised sacrificial straight shutter system.
  • The design and construction of a spanning system, incorporated within some of the proposed slabs, to bridge a Thames Water sewer of 2.4m diameter located 6m below ground level.

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Brookwood Military Cemetery

1914-1918 Memorial Plinth, Brookwood Military Cemetery

Value: £50,000<

Size: 94m2 circular slab

Duration: 3 weeks

Scope of work :

  • The design of the piles for the slab foundation
  • Reduced level excavation over the foundation area
  • The installation of a 50mm Concrete Working Surface
  • The installation of bottom driven mini piles
  • The construction of a faceted (essentially circular) non-voided reinforced concrete slab with a central opening for a decorative planter using the Abbey Pynford galvanised sacrificial edge shutter system.
  • Perimeter drainage and soakaways

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Housedeck on Brownfield Site

Housedeck on Brownfield Site

Client: Mears New Homes

Size: 2,625m2

Duration: 12 weeks

Scope of work : Concrete working surface, Rotary Displacement Piling, voided Housedeck RC slab with Brick Support Unit

The housing developer needed to minimise the volume of spoil removed from this brownfield site and so selected the Abbey Pynford housedeck system supported on Rotary Displacement Piles (RDP).

The RDP technique has been developed by Abbey Pynford to construct hollow stem injected bored piles using our fleet of midi piling rigs (circa 13T).  These piles produce virtually no spoil arisings and the use of midi rigs typically removes the requirement for a piling mat, further reducing the volume of spoil removed from site.  In addition the flat slab Housedeck system ensures that below ground drainage can be installed as shallow as possible.

A suspended raft slab constructed upon our re-usable Deck Support Units with perimeter Brick Support Units and air vents provided a complete heave protection system to meet warranty provider requirements.

The Housedeck system suits any superstructure construction and on this project timber frames with external brick skin was used.

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