What were the biggest problems faced by the early byzantine engineers as the city of constantinople began to grow?

Early Byzantine engineers faced several significant challenges as Constantinople expanded. One major issue was the city's geography, which required innovative solutions for water supply and drainage, given its hilly terrain and proximity to the sea. Additionally, the engineers had to ensure the structural integrity of buildings and fortifications to withstand earthquakes and potential sieges. Lastly, the rapid population growth necessitated efficient urban planning to accommodate residential, commercial, and public spaces.