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MECHINERIES USE FOR PILE INSTALLATION

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MECHINERIES USE FOR PILE INSTALLATION

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    1. MECHINERIES USE FOR PILE INSTALLATION NURUL HUDA BT MOHD JAMAL AB03061

    3. PILE HAMMERS

    4. PILE HAMMER Factor should be taken by using this method is: the size and the weight of the pile the driving resistance which has to be overcome to achieve the design penetration the available space and head room on the site the availability of cranes the noise restrictions

    5. Pile driving methods (displacement piles) Categories of pile driving method: Dropping weight Explosion Vibration Jacking (restricted to micro-pilling) Jetting

    6. DROP HAMMERS A hammer with approximately the weight of the pile is raised a suitable height in a guide and released to strike the pile head. 2 types of drop hammers: Single-acting steam or compressed-air hammers Double-acting pile hammers

    7. 1. Single-acting steam or compressed-air hammer comprise a massive weight in the form of a cylinder admitted to the cylinder raises it up the fixed piston rod. At the top of the stroke, which can be controlled by the operator, the steam is cut off and the cylinder falls freely on the pile helmet.

    8. Eg:Pile driving using hammer Mechineries

    9. 2. Double-acting pile hammers driven by steam or compressed air back guides are bolted to the hammer to engage with leaders, and only short leg-guides are used to prevent the hammer from moving relatively to the top of the pile. Double-acting hammers are used mainly for sheet pile driving.

    10. DIESEL HAMMERS classified as single and double-acting employs a ram which is raised by explosion at the base of a cylinder. a vacuum is created in a separate annular chamber as the ram moves upward almost doubling the output of the hammer over the single-acting type. provide an efficient pile driving capacity, but not effective for all types of ground.

    11. PILE DRIVING BY VIBRATING usually electrically powered @ hydraulically powered consists of contra-rotating eccentric masses within a housing attaching to the pile head. amplitude of the vibration is sufficient to break down the skin friction on the sides of the pile. best suited to sandy or gravelly soil.

    12. HYDRAULIC VIBRATORY HAMMER Require litter soil displacement Involved reducing of ----?skin friction ----?an ingress of water

    13. Advantages using a hydraulic vibratory hammer The ground return to its original load bearing when the vibration stop Much less resistance ( noise, surrounding ground movement) Faster ringging and deringging onsite Suitable for surface compasition and pile extraction

    14. JETTING to aid the penetration of piles in to sand or sandy gravel, water jetting very limited effect in firm to stiff clays or @ any soil containing much (coarse gravel, cobbles, or boulders).

    15. BORING BY MECHANICAL AUGER

    16. Boring by mechanical auger Types of boring by mechanical auger: Continuous Flight Auger (CFA) Underreaming C.H.D.P

    17. Continuous Flight Auger (CFA) An equipment comprises of a mobile base carrier fitted with a hollow-stemmed flight auger which is rotated into the ground to required depth of pilling. To form the pile: concrete is placed through the flight auger as it is withdrawn from the ground.

    18. The auger is fitted with protective cap on the outlet at the base of the central tube rotated into the ground by the top mounted rotary hydraulic motor which runs on a carrier attached to the mast. On reaching the required depth, highly workable concrete is pumped through the hollow stem of the auger, and under the pressure of the concrete the protective cap is detached.

    19. While rotating the auger in the same direction as during the boring stage, the spoil is expelled vertically as the auger is withdrawn and the pile is formed by filling with concrete. The important things in the presses: rotation of the auger flow of concrete is matched that collapse of sides of the hole above concrete on lower flight of auger is avoided

    20. Factor of successful installation the pile: soft ground enables to install a variety of bored piles of various diameters Free of tree roots Free of Cobbles Free of boulders Factor of failure installation the pile: the rotation of the auger is not matched the advance of the auger is not matched

    21. CFA Process

    22. Under reaming A special feature of auger bored piles which is sometimes used to enable to exploit the bearing capacity of suitable strata by providing an enlarged base. The types of soil: has to be capable of standing open unsupported Stiff and to hard clays, such as the London clay, are ideal.

    23. the underreaming tool is fitted inside the straight section of a pile shaft expanded at the bottom of the pile to produce the underream after installation and before concrete is casted, a man carrying cage is lowered and the shaft and the underream of the pile is inspected.

    24. hydraulic rotary drilling equipment b) C.F.A, c) undrreaming tool open position

    25. C.H.D.P (Continuous Helical Displacement Piles ) a short, hollow tapered steel former complete with a larger diameter helical flange, the bullet head is fixed to a hallow drill pipe which is connected to a high torque rotary head running up and down the mast of a special rig. A hollow cylindrical steel shaft sealed at the lower end by a one-way valve and fitted with triangular steel fins is pressed into the ground by a hydraulic ram. There are no vibrations.

    26. C.H.D.P.

    27. SCREW PILING SPECIALISTS  

    28. Introduction Combines the old fashion principles of honesty and integrity with tomorrow’s technology Continuing vision to build long-term The Screw Piling division design, manufacturer, install and certify Screw Piles to suit a vast range of applications, from fence posts to heavy load bearing applications up to 130 tonnes. 

    29. Reliability The Screw Piling technique is a simple welded assembly this technique is based on geo-technical expertise in soil engineering the ability to design Screw Piles to suit many different soil conditions the requirement exists for long-term structural integrity

    30. Applications for Screw Piling Residential & Commercial buildings, Bridge abutments, Soil Stabilization  Pipeline supports, Signage towers & Light poles, Tension structures  Permanent & Temporary structures, Underpinning  Boardwalks, Beachfront structures. 

    31.  Advantages of Screw Piling Ease of handling (lightweight), Rapid installation (few minutes per pile)  Minimal site preparation No excavation or soil removal, Unaffected by ground water  Compatible for connection to other building materials (Concrete/Timber)  Removable, Installation in sections in areas of limited headroom  Use as shallow tension ground anchors (structures subject to wind loads)  Compression members, No environmental damage, Vibration free installation     

    32. SCREW PILING SPECIALISTS  

    33. G-PILE SYSTEM

    34. G-Pile System A grip jacking technique is the quiet technique This system is low in noise, free of vibration and other pollution suitable for use in urban, noise sensitive areas It can install precast, steel or timber piles to unlimited depth successfully applied in various types of soil, from soft and stiff clays, loose and dense sands, gravel to weathered rocks.

    35. The G-Pile Model XZY 600T

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