М-20/2 Anchor insert for a lightning rod of 17-22 m

It is used for the installation of detached lightning rods:
– art. M-20/17..22 – 17-22 m high;
– art. M-22/15..20 – 15-20 m high
To install the foundation also use:
– reinforcing steel of class A (ø10 … 12 mm) for the device of a reinforcing grid and a reinforcing framework of ~ 170 kg;
– concrete of class B20 ~ 2,35 m3;
– crushed stone ~ 0.8 m3