sentence: Most big towers are lattice structures.
sentences_before: Most big towers are built as suspension towers. They only hold up the cables, not pull them. Tension towers pull on the cables. They work as terminal towers at the end of a transmission line, or on sharp turns, or as transposition towers.
sentences_after: Smaller ones may be wood, concrete or steel poles.
concept_name: big tower
headings: Transmission tower
categories: Towers Electricity distribution‎