Steel Pile News

High performance RRs piles and cost-efficient RR pile elements were combined for an optimal foundation solution in Norway

October 02, 2017 0:00 CEST

SSAB delivered 5 700 meters of pile pipes and pile elements to the foundations of Kirkebakken apartment buildings in Norway. RR270 and RR320 piles were upgraded to high strength steel S550J2H RRs piles to keep high load capacity after corrosion is taken into account in the top of the piles. By using the higher steel grade S550J2H, pile’s load-bearing capacity can be added by 25 % over that of traditional RR piles. Delivery included 1 176 meters of RRs270/12.5 and 1380 meters of RRs320/12.5. RR220/10 piles were delivered as pile elements with external sleeve splice. Ready-made pile elements enable quick and cost-effective splicing with no welding of the splice needed on site. Total amount of pile elements was 3 168 meters. All piles and pile elements were 12 meters of length.

Figure 1. High strength steel RRs piles and ready-made pile elements enabled good and cost-effective solution for the project.

Piles were first driven through hard moraine of 12 meters and then through silt and clay layers. Piles stopped in moraine after 70 meters. The tendered length of piles was 55 meters, so the project expanded roughly by 30%. The challenge for the customer was the expected excess pore pressure caused by the installation of the piles.

Piling contractor Nordisk Fundamentering AS was satisfied with the delivery and product. “Delivery was quick and reliable. RR220 elements were very easy and fast to install, no welding needed.” says Kai Tiller, Nordisk Fundamentering AS. Contractor of Kirkebakken is Tronrud Bygg AS and project owner is Boligutvikling Frogner AS.

Figure 2. Piling contractor Nordisk Fundamentering AS installed 5.7 kilometers of piles and pile elements.

Kirkebakken is located in Frogner in Sørum municipality, which is situated in south-east part of Norway. Kirkebakken includes 73 new apartments with walking distance to shops, bus and train connections.

Figure 3. Kirkebakken is located in south-east part of Norway. (Picture: www.kirkebakken.com)


Attachments

Related articles

Apr 29Regulatory press releases
Annual General Meeting
Investors

SSAB’s annual general meeting (AGM) was held today, April 29, 2025, in Stockholm. The shareholders were also able to exercise their voting rights by postal voting. The AGM resolved on a dividend of...

Apr 29Regulatory press releases
Q1
Interim report
Investors

The first quarter · Revenue was SEK 25,523 (27,148) million · Operating result was SEK 1,351 (3,157) million · Earnings per share were SEK 1.13 (2.57) · Net cash was SEK 14.4 (18.2) billion

Apr 29Regulatory press releases
Investors

SSAB has secured EUR 2.3 billion of green financing for the transformation project to build a state-of-the-art fossil-free mini-mill in Luleå, Sweden. The transformation project is key to enable SSAB...