If it is unstable, please change support at A to make stable structure. Use the method of joints to calculate the force BD in the truss shown. 60 21.65 ft A 30 2000 Ibf RA RE 50 ft 50 ft

.: Solve for all of the support and pin forces in the frame structure below. You may give the forces in component or total form, whichever is easier: 14' 8' 500 # A 7' 600 # ZZZR

4/18 The signboard truss is designed to support a horizontal wind load of 800 lb. A separate analysis shows that of this force is transmitted to the center connection at C and the rest is equally divided between D and B. Calculate the forces in members BE and BC. D 6' 800 lb 6' CE /B 6' A G -6' 3' PROBLEM 4/18 F 6'

Prove that the truss is statically determinate and calculate the internal forces in each truss member  using the method of joints or the method of sections for a load of F=350N with workings.