for the beam shown below, calculate the instantaneous deflections and long-term deflection after 5 years, assuming that 30% of the live loads are continuosly applied for 60 months. using f'c=4,000psi and fy=60,000psi using normal weight concrete. D=1.6 k/ft. L=1.2k/ft 16" 2.5" 2-#9 2.5" 4-#10 please solve step by step, using all the formulas, thank you do the calculations