Three types of structures - poles / pylons.
- A small 'ground' column rather known from earlier times - for power lines, telephone signals, etc.
- High iron pillar is known lattice structure such as the Eiffel Tower
- The largest extension to the third floor - the type of truss
Modeled with respect to detail - so high poly.
Of these three columns can fill your entire scene - it will only need to finish connecting the wires.
In the case of Max scenes are preserved / present all modifiers.