peter2407
Well-Known Member
I have a drive at the back that due to tree protection orders, needed to be raised above the tree roots. It looks like a railway bridge without the tracks as there is a metal framework set into concrete that has "railway sleepers" set onto it. The sleepers are 22cm wide and 10 cm deep. Last year I replaced the original sleepers as after 10 years they had began to rot. When replacing them, i put 2 "coach screws" that are 3/4 inch by 3 inches in either side underneath that connects the wood to the metal. There is edging made from 15 by 10 cm wood, that connects each sleeper to the edging so wood to wood with 20cm screws. The problem - 10 of the sleepers are getting loose due to the coach screws probably falling out/wood warping/the side screws meaning the wood is suspended. My ideal solution wood be to get massive self tappers - not sure that is a realistic option as the metal frame is probably 1/4 inch thick. Any suggestions on how to more firmly lock the wood to the metal? Access is very restricted and i have already tried to tighten them up.
