BITS AND BOBS /HEAVY CONSTRUCTION EQUIPMENTS/ koodam homwalker

BITS AND BOBS /HEAVY CONSTRUCTION EQUIPMENTS/ koodam homwalker The first commercial continuous track vehicle was the 1901 Lombard Steam Log Hauler. The use of tracks became popular for tanks during World War I, and later for civilian machinery like the bulldozer. The largest engineering vehicles and mobile land machines are bucket-wheel excavators, built since the 1920s. “Until almost the twentieth century, one simple tool constituted the primary earthmoving machine: the hand shovel – moved with animal and human-powered, sleds, barges, and wagons. This tool was the principal method by which material was either side cast or elevated to load a conveyance, usually a wheelbarrow, or a cart or wagon drawn by a draft animal. In antiquity, an equivalent of the hand shovel or hoe and head basket—and masses of men—were used to move earth to build civil works.