page_title: Frangibility
hierarchical_section_title: Frangibility
caption_attribution_description: English: Frangible panel in pavement so that fire brigade can let smoke out of a basement. London
context_page_description: A material is said to be frangible if through deformation it tends to break up into fragments, rather than deforming elastically and retaining its cohesion as a single object. Common crackers are examples of frangible materials, while fresh bread, which deforms plastically, is not frangible.
  A structure is frangible if it breaks, distorts, or yields on impact so as to present a minimum hazard. A frangible structure is usually designed to be frangible and to be of minimum mass.
context_section_description: A material is said to be frangible if through deformation it tends to break up into fragments, rather than deforming elastically and retaining its cohesion as a single object. Common crackers are examples of frangible materials, while fresh bread, which deforms plastically, is not frangible.
  A structure is frangible if it breaks, distorts, or yields on impact so as to present a minimum hazard. A frangible structure is usually designed to be frangible and to be of minimum mass.
caption: A plaque marking the frangible section of a London pavement, designed to be broken to release smoke in the case of an underground fire.
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