C-150-47 Specifications for Portland Cement. 5-03. UNIFORM BUILDING CODE: All conerete work shall conform to Chapter 26 of the Uniform Building Code, 1949 Edition, where applicable. 5-04, GENERAL: Ample opportunity and full cooperation shall be given the various trades to install their required embedded items. Suitable templates or instructions, or both, will be provided for setting such items as ere not placed in the forms by the trades themselves. All embedded items shall have been inspected, and the required tests for concrete and other materials, or for mechanical operations, shall have been completed and approved by the Engineer before concrete 1s placed. 5-05. MATERIALS: @. Coral Aggregates: Coral aggregates shall be graded in the field to suit the various conditions at the sites and to meet with the requirements of the different types of concrete needed. These gradations must be approved by the Engineer before the aggregates are incorporated in the concrete mix. b. Iron Ore and Scrap Steel Aggregates: Iron ore and scrap steel aggregates for limonite aggregate comcrete shall be 1. Iron‘ore for fine aggregate. 2. Serap steel for coarse aggregate. Gradations for limonite concrete aggregates must be approved by the Engineer before the aggregates are incorporated in the limonite concrete mix. ec. Cement: Only one brand of each type of cement shall be used for the exposed concrete in any individual structure. Cement reclaimed from cleaning bags or leaking containers shall not be used. Cement shall be used in the sequence of shipments received unless otherwise directed by the Engineer. 1. Portland Cement: Portland cement, except highearly-strength Portland cement, shall conform to the requirements of A.S.T.M. Designation C-150-47, Type I.