Got me idly wondering if these rather large gates are proving to be a bit of a question mark. Seeing as it is impractical to get a contract land based crane to the site, and there are relatively small bridge holes both sides of that lock, is CRT actually capable of doing a gate replacement or will they rely on bodging and re-bodging the repairs.
At some stage the gates will need to be replaced but the question of how to lift them seems to be quite interesting.
Of course they could go back to the old methods and build sheerlegs ...... that is if anyone knows how to tie the correct knots
2001 when gates were last done is not that long ago but I have a feeling that at that time the Hanson Denham-West Drayton gravel contract was running which helped enormously in vehicle access to the lock. Now that has closed I don't believe there is a proper access. You can get there but I don't think a crane would.
Being tall gates and obviously only liftable from land or empty lock water level it does seem intriguing.
ETA having checked the gravel run didn't start until 2003 so maybe the gates were previously replaced using a floating crane.
If they were proper greenheart gates, they wouldn't float. I don't understand why they persist in making lock gates from substandard timbers. The steel ones that they used in the '70s are in the main still serviceable and don't need any upkeep other than paddle gear and closing mitres.
loddon: Thanks for the confirmation, I am thinking of changing tablets because of the cough but maybe I wont
Mar 31, 2020 13:07:45 GMT
JohnV: There are other drugs but I haven't found the side effects with Ramipril to be bad, it seems to just make my throat a bit more sensitive so things that might have just tickled my throat and make me want to clear it now make me cough.
Mar 31, 2020 13:58:31 GMT
loddon: The cough is the only one I get from ramipril, although the combinatins of drugs I am on has interesting effects.
Apr 1, 2020 15:56:47 GMT