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Pounding

Last updated on Monday, July 29, 2024.

Definition:

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Pounding in masonry refers to the process of densely packing or compacting freshly laid concrete or mortar using a tool such as a wooden or metal tamper. This helps to eliminate air pockets, improve strength, and create a smooth, level surface.

The Concept of Pounding in Masonry

When it comes to masonry construction, one important concept to understand is "pounding." Pounding refers to the impact load that occurs when two adjacent building elements, such as columns and beams, come in contact with each other during a seismic event or due to other environmental factors. This phenomenon is common in structures where there is a lack of proper seismic detailing.

Causes of Pounding

Pounding can be caused by various factors, including:

Earthquakes: Seismic forces can cause buildings to sway, leading to adjacent elements hitting each other.
Settlement: Differential settlement of building elements can result in pounding during ground movements.
Temperature Changes: Thermal expansion and contraction of materials can cause adjacent elements to come into contact.

Effects of Pounding

The effects of pounding can be detrimental to the structural integrity of a building. Some of the consequences include:

Damage to building elements
Reduction in the lifespan of the structure
Risk of collapse during a seismic event

Preventing Pounding

To mitigate the risk of pounding, proper design and construction practices should be implemented. Some effective measures include:

Using proper seismic detailing to allow for building elements to move independently during an earthquake.
Installing gap elements or buffers between adjacent structural components.
Ensuring adequate clearance between elements prone to pounding.

By understanding the concept of pounding and taking necessary precautions, builders and engineers can help ensure the safety and longevity of masonry structures.

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