erosion

One photo when you didint handle properly slope . It made worst when soil was sandy type.
Even turfing was not been able to prevent erosion.

Roof leaking

Roof leaking or damage can  happened when we just complete a buildings.

It might happened few days after its had been installed or after sometime or after it experiance heavy rain and wind.

For above case, damage happened after all services been installed.
The frame for ceiling was not good enough to hold anythings attached to it. It might be ceiling itself or lamps or any ducting fix to frame or any water pipe running just above it.
Poor M &E and C&S consultant and architect didint coordinate properly to check weight or anythings attached to ceiling.

Thre are cases ceiling board didint clip to frame and it will blown away after heavy rain with strong wind.