Compute the total losses for a simply supported pretensioned rectangular beam made

with normal weight concrete $($unit weight $=150pcf)$ with width $b=18"$ and height $=36",$

and assuming:

$f_c^{\text{'}}=6$ksi

$f_{ci}^{\text{'}}=4\mathrm{.}8$ksi

$f_{pj}=0\mathrm{.}7$fpu

$f_{pu}=270$ksi

$A_{ps}=2\mathrm{.}142i{n}^2$

$W_{sdl}=400plf$

$RH=70\%($moist curing$)$

$E_{ps}=27{10}^6$

$f_{py}=230$ksi

Span $={60}^{\text{'}}$

critical section$)$

$e_{\text{@}x}=12$