Design the floor beam B$3-$B$4-$B$3$ in Fig. $1.$ This beam supports its own dead load plus the load from a $7-$in$.$ slab. The beam is supported on girders at lines A$,$ B$,$ C$,$ and D and is symmetrical about the centerline of the building. Use normal$-$weight concrete with $fc=3,500,$ fy $=60,000$ psi for flexural reinforcement, and fyt $=60,000$ psi for stirrups.

Given slab has Dead Load $($Self weight$)=90$ Psf$,$ Superimpose Dead load for Slab $($include floor tiles, mechanical equipment's$)=6\mathrm{.}5$ psf$.($Hint: Given D$.$L doesn't include weight of Beam$).$ Based on ASCE $7-10$ recommendations you can use $L_0=100$ psf$.($Hint: to c

Using Max. Moment design your beam. You can use procedure from $CH-5$ Class notes to design your rectangular beam. While performing design procedure there is no need to compute the shear capacity check given in the book on page $473.$

Once beam dimension are found out the readjust the dead load of the beam stem using actual dimension of beam and recompute the total load per foot. Follow step$-5$ from book.

Design of Flexural reinforcement. $($Since it is beam your flexural reinforcement will be different for each segment due changing moment with respect to length$).$ Show the calculation only for maximum moment value and for other values just summarize the final answer in tabular form. Butompute Reduced Live load$).$