Portal CranesPortal and semi-portal cranes, usually preferred in the open field. single or double portafol according to usage or portafosuz is done. Building approach to gain movement in the border areas and existing buildings for use as carriers for colon, is preferred as half portals. a foot to prevent horizontal displacements resulting from flexing under load (leg joints) are positioned as movable bearings. Power supply system as the bar closed collection system or cable drums are preferred. Iron and steel industry, industrial plants, maden- marble quarries in many areas, notably usually open fields, including manufacturing, warehousing, and shipping is preferred for jobs.