Yes I am going to check the need for further supports after the pier is cast. The base has only been put together now since I can use it to hold up the shuttering and the pier.
The base is just lying loose on the four pillars and can (with a bit of puff) be lifted up to rest against the fence.
-------------------- Orion Optics UK 350mm Dob
Celestron 8SE
Bressier R-127L + minus violet filter(F=1200mm achromatic)
ETX125
Revelation 80mmED
W0 ZS66
EQ6 Pro
DSI I