Having also worked for Brunel, Chapple was Scott’s clerk of works for various projects including Boxgrove, Sussex, Itchingfield, Sussex, Danbury, Essex, Frinsted, Kent, Chesham, Bucks and from 1870, St Alban’s Abbey. He remained here for the rest of his working life, except for 11 months in Hamburg in 1876. He stayed at St Alban’s after Scott’s death, working for Grimthorpe until he retired due to ill health in 1886.