STEP (ISO 10303 CAD Exchange)
Open Beta将三维建筑导出为 STEP——ISO 制定的 CAD 数据交换标准。用于机械工程、建筑和制造。提供精确的 BREP 建筑模型。
主要特点
关于 STEP 格式
STEP (ISO 10303) is the international standard for model exchange and the common language of heavy CAD: SolidWorks, CATIA, Inventor, Creo and the free FreeCAD read and write it as standard. Unlike mesh formats, STEP stores real solids with faces and edges, so the model can be cut, merged and measured like an ordinary part.
Buildings from OpenStreetMap in STEP are needed where the city ends up in an engineering assembly: a stand or a model for milling, tooling, fitting equipment into existing development, a three-dimensional site scheme in an environment where everything else already lives in STEP.
What you get: a file with an assembly of solids where each building is extruded into a prism by its height (the height tag, otherwise the number of floors, otherwise 9 meters by default). The roofs are flat — this is volumetric massing, not an architectural model. The origin is the center of the chosen area and the coordinates are metric; after the import check the units in your CAD so that the assembly scale matches what you expect.
The default schema is AP214, the most compatible one; if needed, the file is built to the newer AP242. Roads, water and other flat layers do not get into STEP: the export is volumetric and takes only the buildings.
打开 STEP 文件的程序
以下程序可以打开、编辑和处理从 OSM2CDR 导出的 STEP (ISO 10303 CAD Exchange)（.step）文件：
格式规格
- 开放标准
- 支持 3D 坐标
- 无损（无质量损失）
- 存储要素属性
- 输出：1 个文件
- STEP AP242 (ISO 10303). Mechanical/CAD interchange standard. Opens in SolidWorks, Inventor, FreeCAD, CATIA.
谁在使用 STEP 地图
如何导出 STEP
导出后如何打开
- FreeCAD (free) — File > Open; the model arrives as solids that can be merged, cut and measured.
- SolidWorks, Inventor, Fusion 360 — STEP import is standard; when inserting into an assembly, check the units and set the scale if needed.
- A check before work — open the file in a free viewer and make sure there are as many solids as you expected and that the assembly landed in the right place.
- If you only need the look and printing — take STL: it is lighter, prints directly and can do pitched roofs.
- A large territory — take a fragment: every building becomes a separate solid, and hundreds of thousands of solids will take any CAD painfully long to open.
STEP 格式的热门地图
导出 STEP (ISO 10303 CAD Exchange) 地图
从 OpenStreetMap 下载专业的 STEP 地图。即时生成，任意区域。