en_tn/2ch/27/03.md

He built the upper gate ... he built much

Since Jotham was king, he may have had his workers build these things. Alternate translation: "He had his workers build the upper gate ... he had his workers build many things" (See: rc://en/ta/man/jit/figs-metonymy)

the hill of Ophel

This is a hill in Jerusalem. (See: rc://en/ta/man/jit/translate-names)