movement cracks
Cracks in Concretes are as: Shear cracks, temperature cracks & surface cracks which those are formed depends on climates .
Usually water damage cracks
cracks == In addition to cracks: faulting, metamorphism to new rock types, earthquakes, tilting, and folding.
Base-Isolated
if a building falls or or the sidewalk cracks and a person is there they will get hurt also if u r stuck in a building u could starve or somethin like that
Well, if an earthquake hits into a building, the building shows some cracks and starts deforming but it does not collapse, then the building is ductile structure. now consider a building to be a natural thing like a mountain, then you have a proper application of a ductile structure.
Black spots are not made on the buildings but when buildings get older and in cases when the walls are not built straight due to loads cracks are generated on the walls and to control or to reduce the propagation of cracks special cementing material is applied externally to fill the cracks and mostly due to its black color it seems that black spots are made on the building but it is merely due to yhe repair work.
It is not a good idea to cover foundation cracks with gardening. Have a knowledgeable building expert check the foundation crack and repair it. Don't hide it with plants and invite water to leak into your house.
Winter means snow. For many buildings, it means snow mountains and snow-filled walkways and driveways. If you own a commercial building, then you know that your driveway affects the general perception of your building. No one fancies a driveway filled with cracks or potholes. This holiday season, here are three things you can do to keep your driveway: Fix cracks. Asphalt expands and contracts when temperatures fluctuates. These cracks can create permanent damage on the driveway when water seeps into the foundation. Hire a contractor as soon as you can to fix these cracks. Clear the driveway regularly. Don’t allow accumulation of snow on your driveway. Snow can keep cracks hidden. It is important to shovel your driveway often so snow doesn’t worsen cracks or cause damages. Use Sealcoating.
External works around the building
Stratification (bedding or layering)Ripple marksCross-beddingGraded bedsMud cracks