Solve the reactions $($press ENTER after input$)$

Point A and $B$ are pin supports. Point $C$ is a hinge connect. $(AD=BE=6m,CD=CE=3m$ This frame is

statically

Now we need to calculate the reactions. Since there are four reactions but the FBD for the whole structure can

only solve for three, take two FBD seperated by the hinge D

Therefore: $($using the direction shown in the figure$)$

$F_{Ax}=,kN$

$F_{Ay}=,kN$

$F_{Bx}=,kN$

$F_{By}=,kN$

Bending moment on AD and BE

Since there is no concentrated load and distributed load on segmemt AD and BE $($two ends excluded$),$

the bending moment on these two segements are

So the bending moment at point $D$ is

$kNm.$

And

$$ side are in tension.

The bending moment at point $E$ is $.$

$kNm.$

And

$$ side are in tension.This practice question is based on the frame shown below: