Figure B$-1$ shows cross section of a multiple span one$-$way continuous slab for a warehouse. The slab was cast integrally with beams in longer direction and supported by columns. Slab centre to centre distance in shorter direction is given by $L.$ Slab carry $1\mathrm{.}0$kPa superimposed dead load in addition to its self weight and $3\mathrm{.}0$kPa live load.

Given: Concrete compressive strength, $f_c=40$MPa, yield strength of reinforcing steel, $f_{sy}=500$MPa. Find other data as required.

a$)$ Calculate the slab span length $L,$ where $L=3100+100n$

$[$Take $n=$ last digit of your student number. For example: your student number $=18305697,n=7$;$L=(3100+100**7)=3800mm$

Note: Use the calculated $L$ from $($a$)$ for the further calculation in $($b$-$c$).$

b$)$ Take slab thickness $D_z=150mm.$ Check whether $D_z=150mm$ comply with AS$3600-2018$ deemed to conform span$-$to$-$depth ratio.

c$)$ Calculate the positive moment $(M+)$ for the interior span $BC.F_d=$ effective design load, factored for strength. Determine the primary and secondary reinforcement for positive moment zone of span BC only.

Figure B$-1$