Case Studies from the last 12 months

Underpinning

Leycester Road, Knutsford

A local building contractor approached Sure Pile Ltd to install mass concrete underpinning to a depth of 2.00m below cellar floor level, to allow for an increase in ceilieng heights within the existing cellar.

Works were completed on the 10Lm of underpinning within 12 days on site.

40 Bradley Road, Wrexham

We were approached by Wrexham housing association to install a piled underpinning scheme to an end terraced property that had suffered significant subsidence over a period of time.

The underpinning scheme involved installing 150mm diameter bottom driven steel cased piles to depth of upto 6.0m, 450 x 300mm deep reinforced concrete needle beams and a 300mm deep reinforced concrete slab throughout the entire property.

Works were completed within 3 weeks on site.

Louth, Lincolnshire

We were approached by a local loss adjustor to firstly design a scheme to stabilise the rear kitchen as the structure had moved because of past leaking drains which had been subsequently repaired. As the main drain run was positioned 400mm parallel to the side wall, only an internal underpinning scheme could be achieved. Because of the soft nature of the subsoil to a depth of 1.0m, a piled underpin slab was advised to the loss adjustor as the most economic way forward.

This would take the form a 450mm wide by 300mm deep reinforced concrete needles being cast into the walls below external ground level and supported on 150mm diameter driven steel cased piles. A 200mm deep reinforced slab would then be cast over the needles and tied into them to form the counterbalance required in the design carried out in-house by our engineer.

Upon considering the options, the loss adjustor subsequently appointed Sure Pile to carry out the works, which were completed within 5 days at the premises.

Wollaton, Nottingham

We were approached by a loss adjustor to install a piled cantilever needle beam scheme to the rear and right hand side gable walls, measuring 19Lm in total. Because of the severity of the cracks and the close proximity of neighbouring trees, the works required to be heave protected.

Following our appointment to carry out the works, we commenced on site only to find that the ground conditions encountered were vastly different to that of the borehole carried out previously. Following a meeting on site with ourselves, the loss adjustor and the client's architect / representative, it was agreed that the scheme be revised to a 2.0m deep mass concrete traditional underpin solution.

Works were completed on the 19Lm of underpinning in 17 days on site, with minimal disruption to the client's property and gardens.

Walkden, Manchester

A local developer had purchased two derelict properties adjoining a new small development, which required underpinning because of shallow foundations in poor condition. Three extensions were also required to the front, rear and right hand side elevations.

The underpinning scheme involved installing 150mm diameter bottom driven steel cased piles to a depth of 8.0m, which were subsequently connected to 450mm wide by 300mm deep cast insitu needle beams cast through the existing structural walls. These in turn were tied into a 200mm deep reinforced slab above. Works were completed in 5 weeks.

Extensions

Santo's Restaurant, Higham, Derbyshire

A Derbyshire based building contractor approached Sure Pile Ltd to provide a foundation scheme to the proposed decking area / viewing platform, 30m in length. After reviewing the ground conditions and access restrictions, a piled reinforced concrete ground beam was proposed utilising 150mm diameter bottom driven steel cased piles to depths of upto 4.0m.

All works including excavation, were completed within 10 days on site.

Congleton, Cheshire

A private home owner required piling to his single storey side extension because of an existing drain at 1.80m below ground level. The solution adopted was to install 8 No. 150mm diameter driven steel cased piles to a depth of 4.0m, together with 17.0Lm of a 450mm wide by 300mm deep reinforced concrete ground beam. Works were completed in 2 days.

Wallsend, Newcastle Upon Tyne

A builder had commenced excavating the trenches for a large side and rear single storey extension, but had encountered soft ground conditions upto 3.0m below ground level. The scheme proposed was to install 10 No. 150mm diameter driven steel cased piles to a depth of 6.0m, together with 21.0Lm of a 450mm wide by 300mm deep reinforced concrete ground beam. Works were completed in 4 days.

Chiswick, London

A builder had commenced excavating the trenches for a small rear extension but because of a high water table, a piled solution was the most economical solution. 5 No. 150mm diameter bottom driven steel cased piles to 6.0m, together with 5.0Lm of 450mm wide by 300mm deep reinforced concrete ground beam were installed. Works were completed in 2 days.

New Build

Reevy Avenue, Bradford

After competitive tendering, a Yorkshire based contractor instructed Sure Pile Ltd to install the piled foundations to 4 No. linked properties, which were required to be piled due to the presence of existing services through the site, together with soft ground beyond 3.0m from ground level.

Works involved installing 220mm diameter bottom driven steel cased piles to depths of 8.0m, together with 450 x 450mm deep reinforced concrete stepped ground beams.

All works completed within 4 weeks on site.

Fare Facility, Easterhouse, Glasgow

After selective tendering, a Glasgow based contractor placed the order for installation of the piling works for the proposed new community centre for a consortium including the Bannatyne Group and National Lottery.

Works involved installing 140mm diameter top driven heavy wall piles to depths varying upto 12.0m, which were completed within 9 days on site.

Ince, Wigan

A local building contractor had commenced excavating for traditional concrete strip footings but encountered existing drains running through the site at approximately 2.0m below ground level.

Our solution was to install 16 No. 150mm diameter bottom driven steel cased piles to a depth of 6.0m, together with 31.0Lm of 450mm wide by 300mm deep reinforced concrete ground beam. Works were completed on site in 5 days.

Whittle-le-Woods, Lancashire

We were approached via a local consulting engineering practice to tender for the piling works to a proposed new five bedroom property. We were subsequently successful in being awarded the contract, which entailed installing 32 No. 220mm diameter bottom driven steel cased piles to a SWL of 300kN and to a depth of upto 10.0m.

Nearing the completion of the piling, the client had visited site on several occasions and been impressed with our works, so much so that we were asked to tender for the excavation of the beam trenches, installation of the reinforced concrete ground beams as well as the drainage works.

We were again successful in being awarded the works, which were completed in a total of 5 weeks on site.