In a project this big, it is crucial to ensure the availability of piling rigs and pile material well in time. In this case, the discussions with piling contractors as well as steel and concrete pile manufacturers were started already well before test piling phase. Piling work plays a key role, because without piling work, other construction work cannot proceed. It is also important to create a good trust between all parties already in the beginning. Use of standardized design solutions and recognizing of possible bottlenecks in capacities are important. A special project table and timetable template were used in planning. Open dialogue between end client and contractor, mutual trust and respect were in key role in smoothening of high peaks for resources. The result was successful and the required amount of piling rigs and workload for rigs were quite stable throughout the project.
The availability of pile material is always challenging with large projects. None of the pile manufacturers has this large amount of piles in stock. In the supply of steel piles, the supply chain must also be taken into account, all the way from production of steel material to strip rolling and from there onwards to the rolling of pipes and finally manufacturing of the actual pile element. The whole supply chain takes few weeks, which means that possible changes with quantities need to be informed well in time.
SSAB delivered nearly 97 km of RR piles and 42 km of RD piles. Dimension range of RR piles varied from RR170/12.5 to RR400/12.5. RR piles included also pile elements from RR170/12.5 to RR245/12.5 pile element sizes. RD piles were delivered in pile sizes from RD170/12.5 to RD500/12.5.