i fit aerials for a living so i know nothing however i did pay SE his money and yes the guy that made my steals said they would hold up a block of flats and the welder of 30 years exsperience said there wont be any deflection in them and they are all correct over speck every time i say this site...
wow it seems like there is to much guessing and not building by design how high do you think you can raise/jack/prop up before its to much it seems that you can push them up its when they come back down not to go lower than when they started i wish id have read this last week before i fitted my...