C5-4  C6-1  C6-4  C6-6  C6-9

In the districts indicated, except C6-1A Districts, above the maximum base heights specified pursuant to Section 101-222 (Standard height and setback regulations), tower provided in accordance with the provisions of Section 23-435 (Tower regulations) shall be permitted as an alternative to the maximum building heights specified in Section 101-222. For buildings or other structures utilizing such provisions, no height limit shall apply, except that, in C6-1 Districts, the maximum height shall be 495 feet.