In 2005 I bought a 70 cm Pier-Tech 1 stationary Telescope Pier to install a Paramount ME. It is constructed from anodised corrosion resistant aluminium. The main beam consists of built in slots on all four sides for mounting accessories to the sides of the pier. See below how I installed the Anchor Plate inside my roll-off-roof observatory.
Cutting the observatory floor
Breaking the observatory floor
Digging a small square hole (aprox. 50 cm deep)
Square hole (40 x 40 x 50 cm deep)
Adding cement
Adding more cement (square box)
Adding and levelling the anchor plate (J bolts - bottom of the plate)
Aligning the anchor plate with True North
Finishing the square box
Pier-Tech 1 before instalation
Pier-Tech 1