Читать книгу Construction Management JumpStart - Barbara J. Jackson - Страница 50
Primary Materials
ОглавлениеAsphalt, gravel, concrete, steel, and dirt make up the primary materials used in heavy civil construction. Most of us have witnessed highway road crews as they lay down new asphalt on our highways and streets. We watch as they bring in loads of gravel and rock dust before they place the hot asphalt and roll out the roadway.
Other heavy civil projects such as bridges and dams make use of large amounts of concrete and steel. For example, a dam project may require that a concrete-batching plant be constructed right on the building site in order to accommodate the quantities of concrete needed.