contiguous bored pile method statement

Oct 09, 2018· The removal of spoil forms a hole for a reinforced concrete pile which is then poured in situ, often using the CFA piling technique. A bored pile wall is when a wall is constructed using this method. There are three bored pile wall systems: Contiguous pile wall. Secant pile wall – hard/soft or hard/firm. Secant pile wall – hard/hard.

Feb 07, 2014· The scope of this procedure covers the control of installation of Bored Cast-in-Situ Concrete piles executed by a sub-contractor. 2. PROCEDURE.1 Method Statement: A method statement shall be submitted by the piling Sub-contractor for approval which shall include: i) Construction procedure. ii) Pile design with calculations.

Apr 07, 2008· The installation of the secant piles commences at four (4) locations as shown in Sketch 1. Boring records shall be made during the installation of secant pile record shall be made. The detailed method of statement is very similar to the method statement for bored piling works and shall be made available before construction commences on site.

(a) the number of piles (b) the total depth of the bored or driven piles (the maximum anticipated length of the piles is to be stated) (c) the total concreted length of piles. The maximum depth to be bored or driven will influence a contractor in his selection of the plant and equipment to be used and this in turn will affect the price offered.

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The secant wall consists of interlocking bored piles. Primary () piles are constructed first using a 'firm' concrete / bentonite (commonly 10N/mm2). Secondary (male) piles, formed in structural reinforced concrete, are then installed between the primary piles with a typical interlocking of 150mm.

Jul 10, 2017· Visit us at Pile Walls Construction MethodologySecant...

Oct 27, 2010· Excavation of Lift Pits to the face of the contiguous bored piles will be carry out concurrently with the removal of excavated earth by hoisting out using cranes and buckets. Construction of Lift wall pile caps will then continue. Construction of …

ARISINGS FROM ROTARY BORED PILING CAD IMAGE OF ROTARY BORED PILING RIG From To Practical Depth N/A 70m Diameter 0.45m 3.0m Typical Load Capacity 1000kN 30,000kN Rig Height 12.5m 28m Rig Weight 37,000kg 140,000kg Rig Length 7m 10m Rid Width 3m 5m Noise Profile at 10m 85db 90db TECHNICAL CAPABILITIES – ROTARY BORED PILES

Bored piles are constructed as single piles or group piles based on the applied loads. Generally, group piles are required to support shear cores, shear walls, lift cores, etc. Driven Piles / Precast Piles. These are pre-fabricated piles. They are constructed when the applied load is comparatively low when compared with bored piles.

This paper presents the use of a 700 mm-diameter contiguous bored pile (CBP) wall for a main basement deep excavation project with cut-and-cover tunnel. Due to the presence of cement grout columns between piles behind the CBP wall, the main basement was considered to be 'impermeable'. However, site observations have shown that installation of ground anchors have unintentionally …

Sep 04, 2018· This method statement describes the procedure, the construction procedure, the materials and equipment required for the construction of bored – piles. The intention of the method statement is to give a general guideline for the construction work. Details of the procedures contained herein may be modified based upon actual site requirement. 2.

tolerances of bored piles above cut-off level are specified in Tables 16/3 to 16/5 and in Table 16/7. The Contractor may overpour the piles to whatever level within the tolerance that he wishes but he must ensure that concrete at cut-off level is dense and homogenous. 6 The piling method statement …

2.0 BORED CAST IN-PLACE PILES 2.1 General The Contractor shall carry out the works in accordance with a method statement which has been approved by the Engineer. This method statement shall include inter alia length of temporary casing, details of the constituent materials of …

• Following The Secant And Contiguous Bored Piles ( Reinforcement Works And Pouring Concrete ) . • Following Up All Works Of Sheet Piles . • Following… • Responsible For (Peri & Regular Formworks, Reinforcement, Embedded Parts Installation, Finishing Works And Water Stop ). • Responsible For Preparing Paperwork Such As (RFI, ICL & FCR).

Jun 13, 2018· Construction of secant pile wall is normally required when the building project is to be erected on soft ground or sandy soil. The purpose of this is to ensure that the strata behind the wall would remain undisturbed during construction and to ensure safety from the risk due to high lateral pressure. 1. Title Method Statement for Building Secant Pile Wall and the Necessary Shoring 2. Scope of ...

method statement should show how the tighter tolerances are to be attained. Casting tolerances of bored piles above cut-off level are specified in Tables 16/3 to 16/5 and in Table 16/7. The Contractor may overpour the piles to whatever level within the tolerance that he wishes but he must ensure that concrete at cut-off level is dense and ...

DOC Method Statement Bored Pile UPLOADED BY Tc Ramon Method Statement Bored Pile CONNECT TO DOWNLOAD GET DOC 10 Pages Revision : Date : METHOD STATEMENT- BORED CAST-IN-SITU PILES Page : READ PAPER METHOD STATEMENT METHOD STATEMENT FOR THE CONSTRUCTION OF BORED CAST-IN-SITU PILES PROJECT: Owner/Clien t: Consultant: Revision : Date : METHOD STATEMENT- BORED CAST-IN-SITU PILES …

Contiguous pile walls can be retained by anchors or strutting systems to reduce deflection though commonly for walls up to 7-8 metres in height they are designed to work in cantilever. Specialist Contact | Richard Smith - [email protected] - +44 (0)7918 632800.

Piling construction methodology 1. Set up site and mobilise all necessary labour, plant and materials. 2. The contiguous bored pile wall will then be constructed in accordance with the detailed design and in accordance with the separate Method Statement depending on type of auger piles …

Contiguous Pile Wall. In contiguous pile walls, the axial distance of piles is bigger than their diameter. The space between them is usually filled with shotcrete and reinforcing mesh. This space must be correctly drained, so that rainwater does not stay behind the concrete. The drainage is usually made of perfored plastic tubes.

The purpose of this civil work method statement is to define the procedure for piling construction works at a project in accordance with the requirements specified in the relevant specifications, procedures and drawings, considering safety and quality of the work activities. The scope of work may include piling construction works at the existing ground level,…

method. The design application dictates the function of the micropile while the grouting method defines the grout/grout bond capacity. In the design application, there are two general types of application. The first type is where the micropile is directly loaded either axially or laterally and the pile …

Jan 29, 2019· The Top 10 Advantages of choosing a Contiguous Pile Wall are: Easier to build in load variations, with no requirement for a guidewall. It's a cost-effective bored pile solution, compared to Diaphragm walls. They can be used for more flexible geometry than a diaphragm wall.

Bored Piles are circular piles made of concrete and steel being installed in the soil by various drilling. methods. When the piles are side by side and not linked together they form a retaining wall for excavation pits or terraces. Depending on the application of the contiguous pile walls, the length, diameter, material, formation, and placing ...

into the pile head when using either of these systems to allow easy and safe removal of the pile head. Coredek System Elliot System The above systems are most commonly used in large diameter cast in place concrete piles. This method can also be used for contiguous and secant wall piles and diaphragm walls.

The options of bored pile retaining wall and diaphragm wall had been considered but discarded. Apart from cost consideration, for the diaphragm wall option, it was envisaged that the trenching phase alone of the wall construction through the rubble rockfill of the seawall might induce ground settlement in the order of 60mm (Cowland et al, 1984).

HYDRAULIC PILING, Reinforcement & Concreting This Work Method Statement outlines the method of which the bored piling works are installed for the project. i) HYDRAULIC PILING 1) Hydraulic bored piling plant shall be used. The piling plants consist of a telescopic kelly bar and the lower of the kelly bar is an adaptable to other drilling tools.