1.The treated effluent from a domestic wastewater treatment plant contains ammonia at 9 mgN-L-1 and nitrite at 0.5mg N-L-1. Convert these concentrations to mg NH3-L-1 and mg NO2--L-1.
2.Design the temperature reinforcement, tie bars, and dowel bars for a highway concrete pavement with 13 inch slabs, f'c=3500 psi, traverse joints at 35 ft apar,t and with 3 12 ft lanes each way. Use grade 60 steel (k=200 pci). SF>=1.5