11. All the windows have flat arches of rubbed brick. 12. Access is obtained through three flat arches placed symmetrically about the centre of the facade. 13. Rectangular, first-story windows have flat arches with projecting keystones. 14. Maidenhead Railway Bridge, known for its flat arch , was built in 1839 with 39-metre spans. 15. It consists of walls made of Flemish bond with blue headers, flat arches , and stone cills. 16. The base of the building has broad arches, while the upper level openings have hemispherical and flat arches . 17. It has a wide shallow dome which rest on five semidomes, with a flat arch over the entrance portal. 18. On the original portion of the building, other openings are rectangular and topped by flat arches with limestone keystones. 19. It has a 19th-century central door and a surrounding porch " flanked by casements under flat arch heads ". 20. The windows to the upper level have flat arches with splayed brick voussoirs ( excepting to the toilet bay ).
