The matter is merely are of extending the catenary in both directions. So, cost of towers sharply increases with height and loading right, now another thing is the effect of temperature change, common sense says that in summer that sag will be more and winter it will be less because of the temperature variation.
टॉवरची किंमत टॉवरच्या उंची सोबत वाढत जाते, दुसरी गोष्ट अशी की तापमानातील होणाऱ्या बदलामुळे सॅग बदलत जातो. उन्हाळ्यात सॅग जास्त असतो आणि हिवाळ्यात सॅग कमी असतो.