Concrete walls containing horizontal cracks are serious issues.
Settlement cracks in concrete walls.
Stair step cracks may also signify heaving.
If a vertical crack widens at the top or bottom the wall is either settling or gradually heaving which may present serious issues.
Settlement cracks are usually more extensive at the top of the crack than the bottom as the foundation bends over a single point allowing differential settlement.
There s no exact method for determining how serious a wall crack is without hiring an expert to examine the wall but you might be able to.
There can be a huge number of different reasons for cracks in the home.
Settlement cracks compared with shrinkage cracks in poured concrete slabs this article series describes how to recognize and diagnose various types of foundation failure or damage such as foundation cracks masonry foundation crack patterns and moving leaning bulging or bowing building foundation walls.
How to determine if the cracks in walls are serious.
Horizontal cracks in concrete walls however indicate poor wall designs or pressure buildup behind the wall.
Settlement cracks in outer cavity wall of property.
Cracks in external and internal walls of load bearing structures.
Vertical cracks in walls built with concrete blocks or sand lime bricks.
The cracks may be straight or toothed.