using the force method to solve for the reactions of this statically indeterminate beam

with loading shown. EI is constant for this beam.

You use the pri:

Structure I

Structure II

$30$

Using the Moments, Slopes and Deflection tables from the text, you calculate the deflections at

point $C$ for each structure and find the following:

$y_{C-\text{I}}=\frac{-32,171\mathrm{.}1(k-f{t}^3)}{EI},y_{C-II}=\frac{+(948\mathrm{.}1f{t}^3)R_C}{EI}$

Determine the magnitude and direction of $R_c.$