Poured In Place Walls
This building is actually an old jail, that is
located in the city Julian, California. The concrete walls are solid
concrete and the horizontal lines you are looking at in the walls are
from the 2 x 6 forms that were used to build the jail.
This building looks like it's in pretty good shape, there are no structural cracks that are visible.
Usually, when you are inspecting a building like this, you will see large structural cracks because of the way the concrete was poured.
Normal construction of a solid concrete building like this would be, to poor as much concrete as you could each day until the building is completed.
This means the concrete would not be a continuous pour, instead it would be poured in sections and each section would create a weak spot in the concrete wall. These weak spots are normally where the concrete walls crack.