How far can construction vibrations travel to damage structures?
“Non-Engineer” Answer: It depends - on how strong the vibration is and what type of soil it travels through.
Explanation: Operating construction equipment can cause ground vibrations. Typically, the most severe vibrations are generated by impact pile driving. As these vibrations spread through the ground, they diminish in strength. This process is known as material damping. Based on the vicinity of residential structures, the amount of force used to drive a pile is adjusted so that the vibrations generated are not strong enough to damage the surrounding homes. In response to How far can vibrations travel? Vibrations from earthquakes have been known to reach the other side of the world. It’s all relative to how big the vibration is at its source and how much earth the vibrations move through before reaching you.
Commentary: Vibration is compaction’s best friend. Depending on the age of a structure, it is quite possible that the minor vibrations experienced below the slab sped up the natural occurrence of settlement. When loads are applied to soils (i.e. weight of a concrete slab) the load will cause the soils to compact and the slab to displace vertically. This combined compaction and displacement can result in minor cracking within the concrete slab. Based on the quality of installation, these cracks can reflect through floor tiles or cause the tile to simply delaminate.
“Non-Engineer” Answer: It depends - on how strong the vibration is and what type of soil it travels through.
Explanation: Operating construction equipment can cause ground vibrations. Typically, the most severe vibrations are generated by impact pile driving. As these vibrations spread through the ground, they diminish in strength. This process is known as material damping. Based on the vicinity of residential structures, the amount of force used to drive a pile is adjusted so that the vibrations generated are not strong enough to damage the surrounding homes. In response to How far can vibrations travel? Vibrations from earthquakes have been known to reach the other side of the world. It’s all relative to how big the vibration is at its source and how much earth the vibrations move through before reaching you.
Commentary: Vibration is compaction’s best friend. Depending on the age of a structure, it is quite possible that the minor vibrations experienced below the slab sped up the natural occurrence of settlement. When loads are applied to soils (i.e. weight of a concrete slab) the load will cause the soils to compact and the slab to displace vertically. This combined compaction and displacement can result in minor cracking within the concrete slab. Based on the quality of installation, these cracks can reflect through floor tiles or cause the tile to simply delaminate.
Thanks to your explanation, now I understand how construction vibrations damage structures. It's a good thing that you shared it.
ReplyDeletemining equipment