The deck and stringer for a one lane highway trestle bridge suitable for $H^{6d}{10}^{10}-44$ traffic are to be designed from experience the $2^4{6}^4$ rough sawn deck and $6^{\text{'}\text{'}}{12}^{?}(545)$ Pyinkado Stringers are chosen as preliminary section. Check whether the chosen sections are suitable.

The span length of stringer $=15ft$

$\frac{c}{c}$ spacing of stringers $=2ft$

$3"$thk asphalt concrete wearing surface $($unit $t=150p(f)$

$2^4{6}^4$ rough sawn deck $($unit wt $=60$ pct$)$

Allowable stress for decking $=>F_b=2300$ psi, $F_v=125$ psi

Allowable stress for stringer $=>F_f=2000$ psi, $F_v=110$ psi