Lamma Power Station jetty: working platforms and lifting frames
Temporary working platforms hung from the jetty piles, a platform for the fender dolphins and a vertical lifting frame for repair works at the Lamma Power Station jetty.
- Year
- 2012
- Location
- Lamma Power Station, Lamma Island
- Status
- Completed
- Category
- Underwater & marine
Repairing a jetty in open water starts with giving people somewhere safe to stand. For the jetty at Lamma Power Station we designed a set of temporary working platforms that clamp onto the existing piles below the deck, a separate platform for working on the fender dolphins, and a vertical lifting frame for raising materials from boat level.
The drawings were prepared in 2012 with a full material list, so the steelwork could be ordered, fabricated and assembled on site without further design. We also drew a steel navigation marker buoy for the works area: a Ø2 m float divided into four watertight compartments, with a Ø1 m ballast chamber, lamp seat and lockable battery box.
From the drawings
The jetty works covered Denso SeaShield 100 protection on about 74 steel piles (Ø800 × 12 mm) from +5.0 to −2.0 mPD, new pile collars on the south approach, deck and dolphin concrete repairs, and removal and refitting of the berthing fenders at the South Coal Jetty. Our platforms clamp around the Ø800 mm piles; we also drew a floating raft with a vertical lifting frame and a pile-wrap frame.
Drawings
