$(5)$ Problem $3,$ Chapter $16$

A prestressed post$-$tensioned rectangular beam is required to carry the uniformly

distributed loads $($a$)$ and $($b$)$ positioned as shown in Figure $16\mathrm{.}6(1)$ either

simultaneously or independently. Obtain suitable sectional dimensions $fb=\frac{D}{3})$

and sketch the limiting zone for the prestressing cable giving the necessary values of

the eccentricities. Assume $c=14$MPa,$c_t=1\mathrm{.}5$MPa,$n=0\mathrm{.}80$ and ${}_w=23k\frac{N}{m^3}.$

Figure $16\mathrm{.}6(1)$ Load configuration and sectional details of a simple bean with overhang