Push pull
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DAWSON CONSTRUCTION PLANT LTD PUSH <d*&Lp> PULL INNOVATIVE PILING EQUIPMENT Quiet, vibration-less installation and removal of steel sheet and foundation piles

DAWSON CONSTRUCTION PLANT LTD Push-Pull Sheet Piling – The Principal Advantages • Powerful Push-Pull force of up to 200 tonnes for effective installation and extraction Readily configured to suit Z, U & H-pile profiles in groups of between 2 to 6 No reaction frame required to start pile installation – unlike conventional pile presses Corner piles easily installed without reaction frame Offers truly recyclable foundation solutions Standard Z-piles can be installed close to property boundaries – maximise development footprint Leader guided operation reduces interlock friction and produces...

DAWSON CONSTRUCTION PLANT LTD The Dawson Push-Pull concept Powerful hydraulic clamps take hold of the tops of several interlocked steel sheet piles. The piling rig then applies downcrowd force, pushing ALL piles until the rig reaches its safe load limit. This usually achieves several metres of penetration. Maintaining this initial pre-load the hydraulic Push-Pull cylinders then apply vertical force to a single sheet pile whilst reacting on the rest of the pile group. This downward force requires an equal and opposite reaction. Initially, most of this reaction is provided by the combined...

DAWSON CONSTRUCTION PLANT LTD Basic Push-Pull Equipment Features The Dawson Push-Pull concept offers the possibility to install and remove steel sheet piles and foundation piles without significant noise or ground vibrations. Typically installed on a modern, efficient, powerful hydraulic piling rig the complete system can be rapidly deployed to site, set up in a few hours and undertake the required piling operation accurately, productively and safely. Typical 4-Cylinder Push-Pull configuration Modular Hydraulic Cylinder Sub-Assemblies (four shown here) Enclosure for Electro-Hydraulic...

DAWSON CONSTRUCTION PLANT LTD Push-Pull Integration with a Piling Rig - General Guidelines Dawson Push-Pull systems have been designed to readily integrate with a range of piling rigs. There are a number of essential features required of any potential rig but invariably some rigs will be more suited as a carrier for the Dawson Push-Pull than others. Some will require little more than engineering adjustment, whilst others may prove more demanding. A few rigs are simply not suitable! Please consult Dawson’s engineering department to discuss specific applications. What is the ideal piling rig...

DAWSON CONSTRUCTION PLANT LTD Leader Articulation The leader should have the ability to articulate or pivot (in plan view). This is typical of any rig that has been engineered to undertake sheet-piling work - though alternative arrangements can be supplied. This feature offers two significant operational benefits: • The entire piling process is faster, more economic and safer when the operator has the ability to see what he is doing. Lead articulation means the operator can position the leader for good visibility with minimum track movement. • The 2-Cylinder Push-Pull unit can accommodate...

DAWSON CONSTRUCTION PLANT LTD Technical Specifications Weight* will vary depending on leader mounting arrangements. (.-CYLINDER BOX PILE PUSH-PULL SIDE VIEW OF 2 I 4 CYLINDER UNITS

DAWSON CONSTRUCTION PLANT LTD What Pile Sections? Unlike conventional pressing equipment the Dawson Push-Pull units can be configured to suit a considerable range of U or Z steel sheet pile profiles of varying widths working with two or more sheets at a time. Whilst a 4-Cylinder Larssen Push-Pull may not be readily used on a line of Z-piles, the basic Hydraulic Modules can be reconfigured with replacement support frames at minimal cost. The same is true if the steel mills launch new wider sheet pile profiles in the future. This flexibility means that the modern contractor can invest in such...