1311.01 Dangerous building defined. 1311.02 Dangerous buildings; nuisances. 1311.03 Agreement to repair or remove. 1311.04 Authority to examine premises; remedial order. 1311.08 Unsafe conditions; reports. 1311.09 Failure to act; remedy by City; costs certified as lien. 1311.11 Appeal to Board of Zoning and Building Appeals. 1311.12 Structures vacant and open entry.