Hello!
The old dock was 3x6 meters with iron poles driven into the ground. It lasted about 30+ years with minor renovations. The bottom is mud/clay but I think there's bedrock at the bottom and the maximum water depth is a little over a meter. Waves from Lake Vättern can also occur. The dock did not survive last winter, so I hired craftsmen to build a larger dock of 5x8 m (waiting for exact measurements from my sisters).
After discussing with the craftsmen, they suggested wooden poles instead of iron poles. They first wanted an 8 cm diameter, but we wanted thicker, so they took a 12 cm diameter. After the first ice, the poles have bent despite cutting around the dock to prevent ice and fastening wires to keep the dock in place. The fact that the dock is already beginning to collapse, that they wanted thin poles, and have rather flimsy beams against the bedrock (see picture) raises the question if the craftsmen are capable of building a dock that will hopefully last?
How can they make the dock hold better?
No idea which forum to choose so someone can feel free to move the thread.
Thanks, regards Larssons
The old dock was 3x6 meters with iron poles driven into the ground. It lasted about 30+ years with minor renovations. The bottom is mud/clay but I think there's bedrock at the bottom and the maximum water depth is a little over a meter. Waves from Lake Vättern can also occur. The dock did not survive last winter, so I hired craftsmen to build a larger dock of 5x8 m (waiting for exact measurements from my sisters).
After discussing with the craftsmen, they suggested wooden poles instead of iron poles. They first wanted an 8 cm diameter, but we wanted thicker, so they took a 12 cm diameter. After the first ice, the poles have bent despite cutting around the dock to prevent ice and fastening wires to keep the dock in place. The fact that the dock is already beginning to collapse, that they wanted thin poles, and have rather flimsy beams against the bedrock (see picture) raises the question if the craftsmen are capable of building a dock that will hopefully last?
How can they make the dock hold better?
- use iron pipes?
- wires?
- stone chest supports in one place?
- anchor more to the land?
- is the dock too big?
No idea which forum to choose so someone can feel free to move the thread.
Thanks, regards Larssons
You have proof that the old bridge held up quite well, so I suggest you try to replicate that construction with iron pipes.