Areas of the municipal map (doc. of 12.09.2008) of the city of Walnut

The Urban Planning Code defines two types of areas for municipal maps: however, there are special cases:- Graphic documents may define sectors reserved for industrial or craft activities, in particular those incompatible with the neighbourhood of inhabited areas.- They delimit, where appropriate, the areas in which the reconstruction of a building destroyed by a disaster is not permitted.- The installations necessary for collective equipment, agricultural or forestry exploitation and the development of natural resources are not covered by the principle of inconstructibility resulting from a classification.城市规划法规（Urban Planning Code）为市政地图划定了两类区域，但存在若干特殊情形： - 规划图纸文件可划定专属用于工业或手工业活动的区域，尤其是那些与居住区周边环境不相容的活动地块； - 此类文件可酌情划定禁止灾毁建筑重建的区域； - 用于公共配套设施、农林开发及自然资源开发的必要设施，不受用地分类所衍生的不可建设原则约束。