Determine the concrete mix proportion (using the ACI recommended practice 211.1) for construction of slab, exposed to severe weather conditions. The slab is 5 inches thick with 1-inch minimum clear space is available for aggregate and 28-days average compressive strength of concrete is 3600 psi. The other properties of the concrete ingredients are given below in the table. Also summarize material cost at the end of mix design using the rates you obtained during site visit of mini project mentioned in your report.

Material Cement Fine aggregate Coarse aggregate Properties Type I, Specific gravity = 3.1 Bulk Specific gravity (SSD); Absorption Capacity 1.3%; Surface moisture = 4.2%; Fineness modulus = 2.7 = Maximum size=% in; Bulk specific gravity (SSD) = 2.68; Absorption capacity = 1.0%; Surface moisture = (0.5% x 2)/class number; Dry rodded unit weight = 100lb/ft