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Masonry structure and its limitations

Short answer

Masonry structures are assemblies of units like bricks or stone bonded with mortar, working primarily in compression. Key limitations: very low tensile and flexural strength, poor resistance to lateral loads, restricted height and slenderness, heavy self-weight, sensitivity to openings, brittle failure, and dependence on workmanship.

What do you understand by masonry structure? State its structural limitations.

Masonry structure is a structure built from individual units (bricks, stone, concrete or hollow blocks, compressed earth blocks) laid in courses and bonded together with mortar. The walls and piers carry the loads mainly by compression.

Structural limitations

  • Very low tensile and flexural strength; mortar joints are weak planes, so cracks open easily.
  • Poor resistance to lateral loads (earthquake, wind), because the material is heavy, brittle and has little ductility.
  • Limited height and span; the slenderness ratio is restricted (IS 1905: about 27 for walls and 12 for columns).
  • Openings must be small and well placed, otherwise the wall strength falls sharply.
  • Strength depends on workmanship, quality of units and mortar, and curing.
  • Heavy self-weight, so foundation loads are large; walls are thick and reduce the floor area.

✓ Answer checked by Claude Sonnet 5.5

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