Looking at the exterior walls of home, structural issues will almost always be identified here. Be on the lookout for walls that are bulging, bricks that have cracked, and broken mortar. Some cracks can identify a major foundation issue while some are going to be minor. However, if there are numerous cracks, inside and out, and they are grouped together, it is most definitely a big problem. 

Generally speaking, cracks larger than 3 millimeters and of different shapes and sizes will be structurally problematic in nature. One of the biggest signs that a crack is structural is that they keep getting bigger over time. 

A structural engineer will do a thorough inspection of a building to ensure it is safe and stable. First, they will visually examine important parts like the foundation, walls, roof, and supports. They are looking for any obvious signs of leaning, cracking, rotting, damage or weakness.

Next, the engineer will use special tools to test the materials and structures more closely. For example, they may tap on walls with a small hammer and listen for hollow sounds that indicate problems. Or they might utilize a measuring device to check if the floors are level or sloped.

Additionally, the engineer is checking that the building structure can withstand aging without issues. They are making sure the building won’t move, twist, or even collapse over time. After the inspection, the engineer will write up a report detailing any problems found and recommendations for repairs.

In summary, the goal of a structural inspection is to identify any issues early on. That way repairs can be made before anything fails or falls apart. Regular inspections by a qualified structural engineer are crucial to prevent major issues and keep a building safe for many years.