These early cranes employed a rudimentary system of pulleys and rope that enabled them to carry up to 6,000 pounds, or three tons, when operated by eight men.Īncient cranes represent impressive engineering feats given the technology of the time. The remarkably powerful cranes that exist today are part of an engineering tradition that spans at least 2,500 years, dating back to Ancient Greece and the Roman Empire.
0 Comments
The application enables you to select between imperial or metric units, zoom in or out of the working environment, specify angle values, set up drawing limits, use polar tracking mode for restricting the mouse cursor to specified angles, work with line types and layers, and assign colours to objects. ZWCAD 2017 is a professional software application that provides a handy set of tools for helping users design 2D and 3D drawings.Īlthough it comes packed with many dedicated parameters, it boasts a clean layout that gives users the possibility to create a new drawing from scratch, use a step-by-step approach which comes in handy especially for rookies as they are offered assistance throughout the entire process, or choose one of the template files. |