Unreinforced Masonry Failures

Unreinforced masonry (URM) buildings are one of the most dangerous structural types during earthquakes. Without internal steel reinforcement or flexible bonding, these walls can collapse suddenly when exposed to lateral seismic loads.

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Unreinforced masonry failure

Why URM Structures Are High-Risk

These older brick or block walls were often built before seismic codes required internal reinforcement. Lacking ductility and cohesion, URM walls are brittle and prone to cracking or full failure under stress.

Key Signs of URM Vulnerability

  • Visible diagonal or stair-step cracking in brick/block walls
  • No anchorage between walls and roof/floor systems
  • Aged mortar joints or spalling under minor stress
  • Buildings constructed before local seismic codes were enforced

Mitigate Collapse, Improve Resale Value

Seismic retrofitting of URM walls not only enhances life safety but often leads to improved building valuation, insurability, and code compliance — especially in earthquake-prone areas.

Recommended Solution

FRP (Fiber Reinforced Polymer) Strengthening systems add strength and ductility to URM walls, offering modern reinforcement without demolition or excessive downtime.

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Reinforce Masonry Before the Next Earthquake

Ensure safety and structural performance with FRP retrofits designed for URM walls. We make seismic compliance achievable and efficient.

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