Arch Henderson are delighted to announce that Engineers Ireland has shortlisted the Dublin Port Ro-Ro Jetty Project for ‘Engineering Project of the Year’ at the Engineers Ireland Excellence Awards 2019.
Arch Henderson, an Engineering and Architectural Partnership that provides multi-discipline services from offices all over Scotland, was employed by Keating to undertake the full detailed design for the construction of a new Ro-Ro jetty structure for Dublin Port Company. The new Ro-Ro Jetty, designed to accommodate the world’s largest short sea Ro-Ro cargo ferries, is an integral part of the Dublin Port Company’s multi-million euro redevelopment of the Alexandra Basin.
The completed jetty structure is approximately 290m long, provides two new berths comprising nine individual reinforced concrete dolphin pile caps supported on vertical tubular steel bearing piles.
The design team was also responsible for design of guide piles to align one new floating linkspan as supplied by Ravestein BV and one relocated linkspan. To ensure a suitable solution was developed, which met Dublin Port Company’s requirements and suited the contractors preferred construction method, required extensive collaboration with the contractor and Arch Henderson’s design partners, along with careful consideration of the geotechnical conditions present versus the berthing and mooring requirements.
This lead to an innovative ‘flexible’ dolphin solution involving vertical tubular piles supporting a reinforced concrete pile cap and allowed Arch Henderson to meet the Port’s onerous loading conditions and range of vessels whilst still adopting the contractor’s preferred method of construction.
Access to the dolphins is by a series of nine interconnecting walkways. These take the form of lattice girder structures prefabricated from steel sections and lifted into place with services for each dolphin suspended beneath. Due to the nature of the ‘flexible’ dolphins, all walkways were designed to accommodate the range of movement in the dolphin structures. This was achieved by designing a pivot connection at one end and a sliding bearing at the other.
Arch Henderson was responsible for fully developing all aspects of Dublin Port Company’s initial design brief for a new Ro-Ro jetty. This included, but was not limited to, geotechnical design, mooring and berthing design, structural design, utility design and mechanical and electrical design. Arch Henderson also provided full construction drawings, specifications and 3D BIM model as part of the contract.
Members of the public are encouraged to vote online for their preferred project before the deadline of Friday, November 8: https://www.surveymonkey.com/r/G3BJPD7. For full details of all shortlisted projects, please follow this link: http://www.engineersireland.ie/Communications/Press-Archive/Excellence-Awards-Spotlight-Engineering-Project-of.aspx
