### Discussion :: Theory of Structures - Section 1 (Q.No.38)

Ddendu said: (Sep 5, 2013) | |

Reactions are Va + Vb = 5t. Let length of each member be x. Moment atB = 4t * x - 5t * x + Va * 2x = 0. Therefore 1t = 2Va. Hence Va = 0.5t. |

Ishan said: (Mar 26, 2016) | |

Hello Ddendu can you tell me, why the x is multiplied with 4t, as it is 2x distance away from B. |

Pradyumna Kumar Nayak said: (Apr 19, 2016) | |

Hello, Ishan. It is a perpendicular distance of line of force and point B. So only x is multiplied. |

Pradyumna Kumar Nayak said: (Jul 29, 2016) | |

Considering the joint A. As Va = 0.5 T upward. fac = 0 & fad = 0.5T compression. |

Michelle said: (Feb 22, 2017) | |

Hi @Ddendu. How is EF=BC= X? Are all the members equal in a truss all the time? |

Manoj Paridwal said: (Sep 11, 2017) | |

How it is compression. Show it will be .5 tension? |

Tapas said: (Feb 22, 2019) | |

@Manoj Paridwal. When axial force moves towards the joint it is compression. As the reaction on the left side +ve so it is an upward reaction, so to balance it an equal downward force will be induced in the member AD. Hence both as the forces are moving towards the joint A hence the member AD is under compression. |

Adarsh said: (Jun 11, 2019) | |

Very good, thanks @Dhendu. |

Pawan said: (Jun 16, 2019) | |

Thanks @TAPAS. |

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