Design the following concrete mixes using the absolute volume method as outlined in the handout and described in class. Mix Design #1Conditions and Specifications: Concrete is required for a reinforced concrete wall. A specified compressive strength, f’c, of 4,500 psi is required at 28 days using Type I cement. The design calls for a minimum 1.5 in. of concrete cover over the reinforcing steel. The minimum distance between reinforcing bars is 2 in. The only admixture allowed is for air entrainment. Assume an air content of 7%. No statistical data on previous mixes are available. The materials are as follows: Cement: Type I, ASTM C 150, with a relative density of 3.15. Coarse Aggregate: Select the maximum size gravel (it being well-graded will be assumed) with an oven-dry relative density (specific gravity) of 2.65, absorption of 0.5% (moisture content at SSD condition) and oven-dry rodded bulk density (unit weight) of 95 lb per cu ft. The laboratory sample for trial batching has a moisture content of 1.5%. Fine Aggregate: Natural sand with an oven-dry relative density (specific gravity) of 2.61 and absorption of 0.8%. The laboratory sample moisture content is 8.0%. The fineness modulus is 2.80. Air-entraining admix: Manufacturer recommends a dosage rate of 1.0 fl oz per 100 lb cement.