RBT (Roof Builder Tools) is an architectural tool for AutoCAD 2000 that can be used to turn a formatted 2D roof plan into 3D solids. By selecting individual roof planes (drawn as lwpolys), RBT will enable you to create even multiple-peak roof models in minutes. Although it's primarily a 3D modeling tool, it can also be used to quickly generate 2D elevations. It creates these elevations using profiles (hiding the 3D roof and wall solids in your 3D model.
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