Question

roblem 4. (6 points) For the truss shown below: . Calculate the axial force in member AB b. Calculate the maximum bolt shear in the bolted connections at A shown e. Calculate the bearing stress in member AB at connection A d. Calculate the bearing stress in the gusset plate at connection A A. 30 pt. CO NNETION at A Guder PLAfE

Answer 1

A. SokN First find the angle of this truss Bo 90 19.3757 We get the different angle of the triangle are as LA 18.43, LB 143.14 LC-18.43. Now draw FBD for whole truss to find reaction. hese SOKN Rpr AV

Now draw the free body diagram for point B and apply static equilibrium condition 2SKN Finally we get the load at member AB is 61.37 compressive natur. B. Now to find shear stress at bolts by the member force as mention in question There is total 6 bolts and force will be wear by each is equal amount koss seohim Aris 10.22 k 2223,22 10-22 X So now we know the shear stress of bolt is 23.22KN per Inch square.

C. Stress wear by the member AB Farceon nemeAD 14 2 dnch D. Stress at the gusset Given thickness 3/8 inch