*New Subscriber* : For a corporate video, that was *excellent* ! Well done Dock90 production team. Questions that occur to me : How deep typically do these cylinders have to be sunk into the seabed ? Does the seabed have to be prepared, or is it just silty/ sandy and the process is just vibrating a space for the pile walls to move into ? Is any ballast pumped into the cylinder once it has been sunk ? If the required cylinder length is longer than the ship, are further section joined as it's hanging in the air ? How long does it take the put in place a cylinder like the one in the video from the time the ship anchors in place ? Can the ship drop several piles in one trip ? (eg can a support vessel bring a stock of piles alongside ?) Thank you and greetings from Prague, CZ
Thanks for your comments and questions. The penetration depth of the piles is very dependent on the soil type, turbine size, type of foundation, but this can typically be anywhere from 25m to 40m into the soil. The soil bed does not need to be prepared and the installation process is easiest in granular soils (sands) and harder in cohesive soils like clay, but not impossible. Rock however is not suitable for this type of installation. The large diameter piles currently can be up to 100m in length and come in one piece to the field and are quite often transported across the deck, sticking out on both sides of the vessel. These installations take place with special installation vessels with large cranes. Modern installation vessels (like the one in the movie) do not use anchors, but dynamic positioning systems to stay in place during the installation as this saves a tremendous amount of time. Installation using the vibro technology is typically between 15mins and 1 hour depending on the soil type, pile dimensions and size of the tool used. Most vessels can bring several piles into the field with every trip. A feeder system with supply vessels is possible, but this is normally not common with these big monopiles but is more common for pin piles which are used for jacket foundations. For more information, please check out our website on: capeholland.com/applications/xxl-monopile-installation/
@@CAPEHolland Thank you very, very much for your comprehensive answers to my questions. It's amazing engineering and a credit to your teams that you can place one in an hour. That's amazing ! I will look forther at your website. Very interesting engineering. All the best and greetings from Prague CZ
*New Subscriber* : For a corporate video, that was *excellent* ! Well done Dock90 production team. Questions that occur to me : How deep typically do these cylinders have to be sunk into the seabed ? Does the seabed have to be prepared, or is it just silty/ sandy and the process is just vibrating a space for the pile walls to move into ? Is any ballast pumped into the cylinder once it has been sunk ? If the required cylinder length is longer than the ship, are further section joined as it's hanging in the air ? How long does it take the put in place a cylinder like the one in the video from the time the ship anchors in place ? Can the ship drop several piles in one trip ? (eg can a support vessel bring a stock of piles alongside ?) Thank you and greetings from Prague, CZ
Thanks for your comments and questions. The penetration depth of the piles is very dependent on the soil type, turbine size, type of foundation, but this can typically be anywhere from 25m to 40m into the soil. The soil bed does not need to be prepared and the installation process is easiest in granular soils (sands) and harder in cohesive soils like clay, but not impossible. Rock however is not suitable for this type of installation. The large diameter piles currently can be up to 100m in length and come in one piece to the field and are quite often transported across the deck, sticking out on both sides of the vessel. These installations take place with special installation vessels with large cranes. Modern installation vessels (like the one in the movie) do not use anchors, but dynamic positioning systems to stay in place during the installation as this saves a tremendous amount of time. Installation using the vibro technology is typically between 15mins and 1 hour depending on the soil type, pile dimensions and size of the tool used. Most vessels can bring several piles into the field with every trip. A feeder system with supply vessels is possible, but this is normally not common with these big monopiles but is more common for pin piles which are used for jacket foundations. For more information, please check out our website on: capeholland.com/applications/xxl-monopile-installation/
@@CAPEHolland Thank you very, very much for your comprehensive answers to my questions. It's amazing engineering and a credit to your teams that you can place one in an hour. That's amazing ! I will look forther at your website. Very interesting engineering. All the best and greetings from Prague CZ