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    Can anyone help me do this question?
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    I've had a look at your question and this is what I think is happening (Caveat: not absolutely sure )

    The following members have these forces in them.

    DE: strut : T1
    CD: strut : T7
    CB: strut : T2
    BA: strut : T5
    BD: strut : T3
    BE: tie : T4
    (there is no T6)

    The horizontal pin reactions at A, B, C and E are R1, R2, R3 and R4 (to the right)

    Now you know the forces acting at each joint (remember the ground reactions - (not yet mentioned) you can analyse the members CD and DE as loaded beams and then the loading on the individual joints A, B and E

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