Boskalis Nordic Today No. 02/2019-2020

PORT OF NAANTALI, FINLAND | COAL AND GRAIN QUAY EXTENSION | PERIOD: AUGUST 2019 – MAY 2020

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of the shore, the longest drilled piles to be installed at the outer edge of the quay are up to 20 metres long. Pile drilling is being carried out from our work pontoons Paalu and Upi. As the foundation for the quay ex- tension, a total of 110 drilled piles will be installed in solid rock. Each pile is around 800 mm in diameter,” says Elo. “The foundation work for the quay exten- sion includes a drilled pile wall contained by a transition slab that will prevent flush- ing of soil from behind it. Around twenty 30-metre anchor rods will be installed in the tight, interlocking drilled pile wall. Backfilling of the quay extension will take place after the completion of the wall,” he explains . After the piling work is completed, the con- crete structures of the quay extension deck will be implemented. The quay’s element beams and shell slabs will be cast in Pan- sio, from where they will be transported to the location using Terramare’s work pon- toon Bolle III. The elements and shell slabs will be installed on top of the quay’s frame beams with the assistance of the multi- purpose vessel Meri-Pekka. After element installation, casting of the quay extension deck, surface work and installation of quay accessories will be carried out. “The work will continue uninterrupted over the winter, so we are all hoping for a mild winter. In other respects, our site area is peaceful and has little impact on the op- eration of the port, so the work is progress- ing really quickly,” says Elo in conclusion. HIGH-QUALITY CONCRETE STRUCTURES

PORT OF NAANTALI LOCATION

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110 DRILLED PILES FOR 82-METRE QUAY EXTENSION T he Port of Naantali, one of Finland’s most important ports in terms of both vessel visits and cargo and pas- QUAY EXTENSION ON STEEP SHORE

The Port of Naantali quay extension con- tract will be implemented on a steep rocky shore typical of the area. At the outer edge of the quay extension to be built, 20 me- tres away from the shoreline, the natural depth is already 15 metres. Viljami Elo , a young engineer and site manager who joined Terramare in summer 2018, is ex- cited about the work location. “This Port of Naantali quay extension site is really interesting. Due to the steepness

senger volumes, is extending its coal and grain quay. By extending the quay, the port is preparing for an increase in the number of visits by large Panamax class cargo ves- sels and for other growing shipping traffic in connection with wood chip and grain cargoes. Terramare will implement a new 82 metres long and 20 metres wide con- crete quay extension on a drilled pile foun- dation. TEXT AND PHOTO 2: MARKKU SALONEN, PHOTO 1: TERRAMARE

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AREAL PHOTO OF PORT OF NAANTALI quay areas. The quay extension site and its drilling equip- ment can be seen in the foreground. The photo also shows the large grain silos and power plant situated in the port area. SITE MANAGER VILJAMI ELO presents the tight drilled pile wall being implemented behind the quay extension.

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