A concrete slab $({30}^{\text{'}}$ long $(x-$direction$),{12}^{\text{'}}$ wide $(y-$direction$),$ and $8^{\text{'}}$ thick $(2-$

direction$))$ is subjected to a temperature differential of $20$ F$.$ If you are assuming $k=$

$200$pci and alpha $($thermal coefficient$)=5^{**}{10}^{-6}$ inini F$,$ the maximum curing

stresses in the interior $($let$\text{'}$s call it sigma$)$ is $[$Blank $1]$ and at the edge $($sigma $)$ of

the slab is $[$Blank $2].$ Report your final answers as whole numbers in os rour

answer must be presented according to the accurate rule and do not enter me

units.