Task $17($Max points: $6)$

Reinforced concrete rectangular beam, width $b=350mm,$ effective $($useful$)$ depth $h0=650mm,$ distance from

the center of the compressed reinforcement to the edge of the concrete $a^{\text{'}}=50mm,$ the design strength

$($resistance$)$ of concrete in compression is $19\mathrm{.}5\frac{N}{m}{m}^2,$ the area of tensile reinforcement is $45\mathrm{.}0c{m}^2,$ the area

of compressed reinforcement is $10\mathrm{.}0c{m}^2($design terisile and compressive strength are $360\mathrm{.}0\frac{N}{m}{m}^2).$

Consider that the shape of the block of compressive stresses is rectangular. No additional coefficients should be

introduced to the design resistances or the shape of the block of compressive stresses. Determine the ultimate

bending moment and select from the proposed options all the values of the moments $($from external loads$)$ that

satisfy the strength condition:

$250\mathrm{.}6kN**m$

$1700\mathrm{.}0kN*m$

$1300\mathrm{.}0kN*m$

$810\mathrm{.}5k{N}^{**}m$

There are no moment values that satisfy the strength condition