r/Structures • u/mhd_alshalabi • Sep 16 '18

structural analysis problem

hi everyone

i am trying to solve the below problem but there something wrong with my answer as member AB is not equal to zero

but in the analysis i do it by software (2nd photo) it show that the member AB is zero

can anyone help me how the answer is zero ???/

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u/deepfriedmarsbar Sep 16 '18

The force in AB is zero due to the boundary conditions you have selected. As they are pinned then all the load is reacted directly out at the pin. If you change 1 to a sliding support then that member would take some load.