“…Developed as vernacular responses to a wide variety of environmental, geological and cultural factors, URM requires relatively low skill levels, can be constructed with a range of locally available materials, whilst offering comparatively good durability and at relatively low cost. Approximately, three-quarters of URM structures around the world can be classified as non-engineered or vernacular [Mendis et al, 2014]. In the face of climate change there is growing need to retrofit many such masonry structures to improve their resilience to loading from extreme weather events [Papanicolaou, et al, 2011].…”