Assertion: tower's type | /r/HasProperty | required
Facets:
Source sentences:
text: 800-kV UHVDC lines in China, on one hand, because the towers are higher than ± 500-kV towers, excessively long guys are required (a single guy is usually as long as about 100 m), which is unfavorable for the tightening of guys; on the other hand, due to the larger height of these towers, guys are susceptible to becoming loose due to wind and ice loads, making operation and maintenance more difficult; moreover, as ±800-kV lines are generally subjected to much larger loads than ±500-kV lines, the guys are heavily stressed so that special types of guys and connections are required.