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Q. |
## Rise of a Jack arch is kept about |

A. | 1/2 to 1/3 of the span |

B. | 1/3 to 1/4 of the span |

C. | 1/4 to 1/8 of the span |

D. | 1/8 to 1/12 of the span |

Answer» D. 1/8 to 1/12 of the span |

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- The side thrust T on the tie rods provided at the end beam of jack arch of rise R, is calculated from the formula
- The side thrust T on the tie rods provided at the end beam of jack arch of rise R, is calculated from the formula
- For the economical design of a combined footing to support two equal column loads, the projections of beams in lower tier are kept such that bending moment under column is equal to
- The minimum edge distance of a rivet line connecting two or more plates, is kept equal to 37 mm plus (where t is the thickness in mm of the thinner outside plate).
- The allowable stress in axial tension is generally kept less if thickness of the member is more than
- For the economical design of a combined footing to support two equal column loads, the projections of beams in lower tier are kept such that bending moment under column is equal to
- The minimum edge distance of a rivet line connecting two or more plates, is kept equal to 37 mm plus (where t is the thickness in mm of the thinner outside plate).
- The allowable stress in axial tension is generally kept less if thickness of the member is more than