Construction chart
Construction sequence
1. & 2. The penetration of the segments is obtained by means of a hydraulic jack.
3. During jacking, steel segments are progressively welded together.
4. The jacking operation is continued until the penetration resistance - as shown on the pressure gauge - reaches a predetermined multiple of the pile bearing capacity (i.e. the bearing capacity increased with a chosen safety coefficient).
5. The steel elements are filled up with concrete.
6. The pile is placed under the desired preloading.
Completed Mega pile
Fields of application
• Can be installed in areas inaccessible to the more classic piling techniques and equipment.
• Unlike the classical underpinning method, a pile foundation is realised.
• Most commonly used in underpinning of existing structures or reinforcing of existing foundations.
• The workspace must be located above the groundwater level.
• Simple equipment, no rig is needed.
Environmental impact
• Vibration-free
• Low noise pollution
• No removal of soil
• A stable, dry and flat working platform under the existing construction is required.
Technical specifications
• No decompression of the soil
• The length of the pile is determined by the reaction force that can be obtained and/or by the resistance of the soil.
• As a reaction, the own weight of the building that needs to be reinforced can be used – or in the case of a new construction – another ballast..
• Allowable bearing capacity ≤ 200 kN
• By registering the force during jacking up, the pile is “tested” during installation (since the jacking of each pile is in fact a pile load test).
