1.A designer intends to use 70 pounds of coarse aggregate in one cubic foot batch of concrete. The bulk specific gravity (Gb) is 2.6 and the unit weight of water is 62.4 lbs/ft3. What percentage of mix volume will the coarse aggregate occupy?
2.A hortizonal rectangular concerte channel terminates in a free outfall. The channel is 4 m wide and carries a discharge of waterr of 12 cubic meters per second. What is the water depth 300 m upstream from the outfall?
3.During a shrinkage limit test on a silty clay, the volume of the dry soil pat was found to be 11.02 cm3 and its dry mass was 22.78 g. If the shrinkage limit was 10.9, what is the density of the soil solids?
4.If we wish to map an area 3.1 miles X 500 feet with 1 foot contours, (photo scale is 1"=250ft); how many photos are required to properly cover the area?