No person shall deposit and keep lumber, stone, brick, or other materials for building in any public street, road, or alley without a permit. Any person desiring to do the above mentioned shall make written application to the Public Works Department. The Public Works Department shall have the power to issue a permit granting the permit holder the authority to keep lumber, stone, brick, or other materials for building in the requested public area for a period not to exceed six months. The issuing of a permit shall also be subject to such other conditions or limitations as the Public Works Department may deem necessary under the circumstances. Before issuing any permit, the Public Works Department shall take into consideration the free flow of vehicular and pedestrian traffic, the proper drainage of water, and the safety of persons and property.