John Rylands Library pitched roof over its reinforced concrete roof. Champneys designed a pitched roof but Mrs Rylands was advised that an internal stone vault would reduce the fire risk and it was not built. The £17 million project was completed by summer 2007 and the library reopened on 20 September 2007. By the nineteenth century Manchester was a prosperous industrial town and the demands of cotton manufacturing stimulated the growth of engineering and chemical industries. The town became 'abominably filthy' and was 'often covered, especially during the winter, with dense fogs ... there is at all times a copious descent of soots
John Rylands Library library on a larger scale. Champneys presented plans to Mrs Rylands within a week of gaining the commission. Thereafter frequent disagreements arose and Mrs Rylands selected decorative elements, window glass and statues against his wishes. Champneys was given the honour of speaking about the library at a general meeting of the Royal Institute of British Architects and was awarded a Royal Gold Medal in 1912. The library was granted listed building status on 25 January 1952, which was upgraded to Grade I on 6 June 1994. The core of the library's collection was formed around 40,000 books, including many rarities,