Piling Contractor Top Services in the UK - Sheppard Piling

1. FOUNDATIONS BUILT TOGETHER Restricted Access Mini Piling | Bored Piled Retaining Walls | Rotary Auger Bored Piling |CFA Bored Piling We are a Specialist Piling Contractor Installing Cost-Effective Piled Solutions

2. WELCOME TO SHEPPARD PILING Sheppard Piling is a specialist piling contactor installing cost effective piled solutions throughout London and the south east. Operating from it base in Fetcham, Surrey Sheppard Piling is able to service the M25 and surrounding counties efficiently but has completed many projects further afield in the midlands and down in to Dorset and as far as Devon. Sheppard pilings core business lies in the installation of Continuous Flight Auger Piles (CFA Piling) having invested heavily in a modern comprehensive fleet as part of its expansion program with many of its machines less than 2 years old accompanied by state-of-the-art concrete monitoring systems. Sheppard Piling also caters for restricted access, low headroom sites that require mini piling. Our mini rigs can work in as little as 2.0m of headroom and fit through a standard door way. We have a variety of systems and diameters to cater for different ground conditions / structural loads and site constraints. We believe that our service level at planning / pre-construction is unique and sets us apart from other organisations who do not invest the time with their clients to value engineer projects. It is this strive to make savings on cost and construction programs which has forged solid relationships with key clients that we have been fortunate to work with on many projects. 2

3. WE OFFER OUR SERVICES TO: CFA BORED PILING BORED PILE RETAINING WALLS ROTARY AUGER BORED PILING RESTRICTED ACCESS MINI PILING 3

4. BORED PILED RETAINING WALLS CONTIGUOUS PILED WALL Contiguous piled retaining walls are formed using either Rotary or CFA piling technics, piles are installed at close centres, with typically 100-200mm gaps between piles. These piles form temporary or permanent support to excavations. This techniques is suitable for basements, underground structures and motorway cuttings where working space is limited or adjacent to existing structures. 4

5. BORED PILED RETAINING WALLS SECANT PILED WALL Secant piled retaining walls are formed using either Rotary or CFA piling technics, unreinforced female piles are installed at close centres using a slow-gain (soft) concrete mix, after a sufficient curing period and once each alternate pile has been installed, the reinforced male piles are installed using a standard concrete mix. The overlap for a typical secant section is approximately 75 – 100mm which ensures that water ingress is minimised and fines wash-out is prevented. The interlocking secant wall is not watertight; however water flow is greatly reduced. These piles form temporary or permanent support to excavations. This techniques is suitable for basements, underground structures and motorway cuttings where working space is limited or adjacent to existing structures. 5

6. CFA BORED PILING Continuous Flight Auger Bored Piles are constructed with string of hollow stemmed augers, once the design depth has been reached concrete is pumped through the centre of the augers to base of the pile, the augers are then extracted whilst the concreting continues to ground level, reinforcement is introduced completing the pile. During the extraction process the pile formation is monitored by an on-board computer system to ensure that that the pile is constructed correctly. 6

7. RESTRICTED ACCESS MINI PILING Our rigs can work in a confined space of approximately 2.0m headroom and 750mm access point. This is particularly useful for basement projects in land-locked areas such as London, residential extensions where access for the larger rigs might be an issue or poor ground conditions. The three main techniques of mini piling that we use are as follows: SECTIONAL FLIGHT AUGER BORED PILES – OPEN AUGER BORE Open auger bored piles are constructed with sectional solid stemmed augers, once the design depth has been reached the augers are removed from the bore and the pile reinforcement is placed ready for concreting, once concrete has been introduced the pile is completed. This method of piling requires bores to remain dry and stable for concreting. 7

8. RESTRICTED ACCESS MINI PILING SECTIONAL FLIGHT AUGER BORED PILES – HOLLOW STEM BORE Hollow stem bored piles are constructed with sectional hollow stemmed augers, once the design depth has been reached grout is pumped through the centre of the augers to base of the pile, the augers are then extracted whilst the grouting continues to ground level, reinforcement is introduced completing the pile. This method of piling alleviates any issues with unstable bores and water strikes as the bore is permanent supported by the augers throughout construction. 8

9. ROTARY AUGER BORED PILING Rotary Auger Bored Piling are constructed with a short solid stemmed auger attached to a telescopic Kelly bar, once the design depth has been reached the Kelly bar / auger is removed from the bore and the pile reinforcement is placed ready for concreting, once concrete has been introduced the pile is completed. Where unstable ground or ground water is encountered this piling system can install temporary / permanent lining tubes to allow sufficient support for the pile bore during the concreting process. 9

10. AWARDS & ACCREDITATIONS 10

11. AWARDS & ACCREDITATIONS 11

12. AWARDS & ACCREDITATIONS 12

13. Head Office: Sheppard Piling, Fetcham Park, Lower Road, Fetcham, KT22 9HD T: 01372 232 090 help@sheppardpiling.com Weymouth Office (Accounts): Unit 28, Basepoint Business Centre, Weymouth, Dorset, DT4 7BS T: 01305 897 828 Brentwood Office: Unit 6C, Cockridden Farm Estate, Brentwood, CM13 3LH T: 01277 572 090