This British Standard provides recommendations and guidance for the assessment, maintenance and repair of existing reinforced and unreinforced masonry parapets.This British Standard is applicable to unreinforced masonry parapets of 10 m or greater in length or, if the parapet contains movement joints, with a minimum parapet panel length between joints of 10 m and to reinforced masonry parapets with parapet panels 2 m, or greater, in length.This British Standard is intended to be used by highway authorities, railway authorities, designersand contractors.NOTE These include County, District and Unitary Councils, Network Rail, Transport for London and their respective supply chains.This British Standard relates to highway structures only.