Calculations at transfer point. The point that controls is the one in the right half of the beam, 1.58 ft. from the right bearing, 113.42 ft. from the left bearing.

The following four stresses, due to Prest., Self Wt., DL-prec. and Topping are the same as under the positive moment envelope, shown above. For this reason we just show the results.

• Prest

  Precast-Top= 186.5 psi

  Bottom = 2258.1 psi

• Self Wt.

  Precast-Top= 55.8 psi

  Bottom = -57.7 psi

• DL-Prec.

  Precast-Top= 12.6 psi

  Bottom = -13.0 psi

• Topping

  Precast-Top= 60.9 psi

  Bottom = -63.0 psi

• DL-Comp
  $Topping-top=\frac{(-309.4k-ft)\left(12000\frac{lb-in}{k-ft}\right)}{55882.7{in}^3}=-66.4psi$
  $\mathrm{Pr}ecast-top=\frac{(-309.4k-ft)\left(12000\frac{lb-in}{k-ft}\right)}{63638.3{in}^3}=-58.3psi$
  $Bottom=\frac{(-309.4k-ft)\left(12000\frac{lb-in}{k-ft}\right)}{20143.2{in}^3}=-184.3psi$
• LL+I(-)
  $Topping-top=\frac{(-1455.1k-ft)\left(12000\frac{lb-in}{k-ft}\right)}{55882.7{in}^3}=-312.5psi$
  $\mathrm{Pr}ecast-top=\frac{(-1445.1k-ft)\left(12000\frac{lb-in}{k-ft}\right)}{63638.3{in}^3}=-274.4psi$