This high-quality 3D model of a construction yard is divided into rack storage area, building material stacking area, sand and gravel stockpile area, steel bar processing area and on-site transportation area. The yard is equipped with transportation and construction machinery including container semi-trailers, box trucks, dump trucks, forklifts, loaders and excavators, with various primary and auxiliary construction materials neatly arranged, such as concrete blocks, precast floor slabs, steel rebars, pipes, ready-mix mortar silos and lumber. Multiple construction workers wearing safety protective gear are assigned to loading & unloading, material transfer, component processing and site inspection posts, vividly and completely reproducing the full warehousing operation workflow: material warehousing & storage, internal allocation, on-site processing and outbound delivery of construction supplies.