Head To Head
Log In
Register
The Modern Antiquarian Forum »
Stonehenge »
Stone Shifting 3
Log In to post a reply

144 messages
Topic View: Flat | Threaded
Steve Gray
Steve Gray
931 posts

Health and Safety
Sep 02, 2003, 09:04
Interesting. Reading through the first document (falsework) and the one on access scaffolding, I think we can comply with the requirements provided we do a proper design with loading calculations and have a qualified engineer on site to supervise construction and dismantling. There doesn't seem to be anything relating to materials, so I think we'll be OK using wood. I know a structural engineer. He and I used to tune up minis together in the early 70's, but I haven't seen him for a long time. Still it's worth a try.

The working platforms worry me. They have to be raised as building progresses and will need to have guard rails. If we construct the working platforms out of wood using the log crib principle, how do we implement a safety rail which is strong enough for its purpose, yet can be easily removed and raised to the next level? One idea that I'm sure will occur to Gordon, is to lever up the entire top platform (complete with guard rails) and shove a few more logs underneath. Trouble is where do these lever operators stand?

We also have the problem with the main structure of inserting the new logs while the stone is being lifted. If the levers are 20 feet long and the support logs are 12 feet long, they can't be inserted from the working platforms. Ladders are recommended only for access to platforms or for "light work". I don't think pushing a 12 foot log under a 40 foot stone would be classed as "light work". Maybe we would have to "bridge" the gap between the working platforms and the main towers using something like a portable ships gang plank (with handrails of course).
Topic Outline:

The Modern Antiquarian Forum Index