Hi there i have the attached problem, the struture is indeterminate so i need to solve in terms of R, I have chosen the secion BD as R.
Resolving the joints i get:
Joint B
H = 0
F1 cos t1 + 30 + F2 cos t2 + R = 0
F1 = F2
So
-2Fcos t = 30 + r
- F = (15 + R ) / Cos t
V = 0
30 + 2fcos t + R = 0
R = (30 - 2f cos t)
Joint D
2 F cos r + R = 0
-2F = R / cos t
F = - (1/2) * (R / cos t)
any help on these would be great cause when i reinsert to end equations i devlop i dont get the right kind of figures, Trig is not my strong point lol.
Many thanks