All the streets had well-built sewers beneath them.
Trajan's Timgad was plainly small.

On any estimate of the number of houses, the original draft of veterans sent there in A.D.100 can hardly have exceeded 400, and the first population, apart from slaves, must have been under 2,000.

This agrees with the figures of Aosta (p.
89).

There, 100 acres took 3,000 veterans and their families; here the area is about one-third of 100 acres and the ground available for dwellings may perhaps have been one-sixth.

In neither case was space wasted.