Dataset Direct Download Service (WFS): 10 meter PPRi uncertainty band of Épernay sector CCPC

The studies carried out in the context of the development of the Epernay PPRi (map of hazards) were carried out on the scale of 1/10 000th, and mapped on a background IGN scan25 enlarged to 1/10 000th. Since regulatory zoning stems from the intersection of the hazard map and the stake map, the accuracy of this mapping cannot be greater than that of the hazards. Consequently, the scale of use of the regulatory zoning is that of 1/10 000 and exploitation on a smaller cadastral scale (1/5000 or 1/2000) is not recommended. However, municipalities wishing to do so may transpose the regulatory map into their planning documents provided that they comply with operating principles in order to take account of the uncertainty associated with the expansion of the zoning, particularly at the boundary of the area. Indeed, it is not possible to improve the accuracy of the initial data which presents uncertainty about its contours of the order of 10 metres, which is relatively important on the scale of a plot in an urbanised area. The transposition of the regulatory map into a cadastral planning document cannot therefore be limited to a mere enlargement, which would result in a false precision of the contours. Therefore, a guide defines the principles that would allow municipalities who wish to do so, a transposition into an urban planning document (PLU, municipal map) taking into account the uncertainties between each area. It must also make it possible to define the area regulation to be applied when considering planning permissions. The hazard that made it possible to construct the Regulatory Zoning, as well as the stakes are located under gaspar No. 51DDT20170001 Spatial resolution: 1/2 500 Genealogy: The limits of the uncertainty band are not represented on the graphic documents of the RPP, they are not official in nature. The boundaries of the uncertainty band straddle the separation between two zones of the Regulatory Zonage, which do not follow cadastral or administrative boundaries. The width of this limit is set at 10 metres. A guide to the interpretation of this band sets out the principles for its operation.针对埃佩尔奈PPRi（灾害地图）的开发所开展的相关研究，比例尺均为1/10000，制图基底采用放大至1/10000比例尺的IGN（法国国家地理研究院，Institut Géographique National）scan25扫描图。由于监管区划由灾害地图与风险受体地图叠加生成，其制图精度不会高于灾害地图本身。因此，监管区划的适用比例尺为1/10000，不建议采用更小的地籍比例尺（1/5000或1/2000）进行应用。但有意向的市镇可将监管地图纳入其规划文件，前提是需遵循操作准则，以考量区划扩展（尤其是区域边界处）相关的不确定性。 实际上，初始数据的精度无法提升，其轮廓存在约10米级的不确定性，在城市化区域的地块尺度下，该不确定性影响相对显著。 因此，将监管地图转绘至地籍规划文件时，不能仅通过简单放大实现——此举会导致轮廓精度失真。为此，一份指南明确了相关操作准则，允许有意向的市镇将监管地图转绘至城市规划文件（PLU，地方城市规划方案，Plan Local d'Urbanisme），并考量各区域间的不确定性。该指南还需明确，在审批规划许可时应适用的区域监管规则。 用于编制监管区划的灾害数据及风险受体数据，均归档于编号为gaspar No.51DDT20170001的资料中。 空间分辨率：1/2500 数据溯源：不确定性带的边界未在RPP图形文件中体现，且不具备官方效力。不确定性带的边界横跨监管区划的两个分区边界，并未遵循地籍或行政边界。该边界宽度设定为10米。一份针对该不确定性带的解读指南明确了其应用准则。