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Raghvendra_Rai
Raghvendra_Rai

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Why a Continuous RCC beam should be designed as a Tee beam for Span moments and as a Rectangular Beam for Support Moments?

  1. Madeh Izat Hamakareem

    Madeh Izat Hamakareem

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    Madeh Izat Hamakareem EDITOR

    In the regions of a positive moment, a portion of the slab works with the beam (both under compression force), so that part should be included in the beam design. However, negative moments develop cracks at the upper part of the beam. So, the cracked part of the concrete section is neglected in theRead more

    In the regions of a positive moment, a portion of the slab works with the beam (both under compression force), so that part should be included in the beam design. However, negative moments develop cracks at the upper part of the beam. So, the cracked part of the concrete section is neglected in the design, and the lower portion is in compression which is rectangular.

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aviratdhodare
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What is the introductory rate analysis of SS Masonry?

  1. Komal Bhandakkar

    Komal Bhandakkar

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    Komal Bhandakkar AUTHOR
    This answer was edited.

    The rate analysis varies from place to place & it depends on the cost of construction material as well as labor cost. Roughly, we can say Ru. 134 per Cft. Required when PCC of 1:4:8 is used.

    The rate analysis varies from place to place & it depends on the cost of construction material as well as labor cost.

    Roughly, we can say Ru. 134 per Cft. Required when PCC of 1:4:8 is used.

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Vivek Patel
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At which structure (place) retaining wall resist passive earth pressure?

  1. AdityaBhandakkar

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    At which structure (place) retaining wall resist passive earth pressure?

    The moment of the wall towards the backfill, in this case, the lateral earth pressure called a passive earth pressure. In the case of passive earth pressure, Major principal stress = lateral pressure Minor principal stress = vertical pressure In this case, soil exerts a pull on a retaining wall wherRead more

    The moment of the wall towards the backfill, in this case, the lateral earth pressure called a passive earth pressure.

    In the case of passive earth pressure,

    Major principal stress = lateral pressure

    Minor principal stress = vertical pressure

    In this case, soil exerts a pull on a retaining wall where the inner rupture plane called as a failure plane makes at (45- fi/2) angle with horizontal.

    At depth=0 , Rankines passive force= 0

    If q is a surcharge load acting on backfill, then lateral pressure = K.q applied throughout the depth of retaining wall.

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vivek gami
vivek gami

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What is the substitute frame method in structural design?

  1. AdityaBhandakkar

    AdityaBhandakkar

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    Hi, Substitute frame method is used for the analysis of complex structure I.e multi-storeyed building because analysis of multi-story building is very complicated and long calculations needed. Substitute frame method used for sudden analysis and gives approximate values. The moment distribution methRead more

    Hi,

    Substitute frame method is used for the analysis of complex structure I.e multi-storeyed building because analysis of multi-story building is very complicated and long calculations needed. Substitute frame method used for sudden analysis and gives approximate values.

    The moment distribution method is used for the analysis of applied loads on the structure in the substitute frame method. This method is generally used to determine the vertical loads and horizontal loads. Vertical load is a combination of live load and dead loads

    This method is applied only or vertical loads.

    Dead loads include self-weight of slab column and beams which is analysed in substitute frame method.

    In this method, the beams which are at floor level as well as the columns above the floor and below which are situated at the fixed far end will be e analysed. In some cases the bending moment is not distributed over the far end, thus the moment is computed independently at each floor and retained on that floor for further analysis.

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alain7053
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beam failing , how to fix or remedial solution

  1. Madeh Izat Hamakareem

    Madeh Izat Hamakareem

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    Madeh Izat Hamakareem EDITOR
    This answer was edited.

    The beam should be analyzed to find out the cause of deflection, then decide on the repair technique. one solution could be increasing the size of the beam and adding extra reinforcement in order load carrying capacity of the beam, and increase flexural resistance to reduce deflection. Before applicRead more

    The beam should be analyzed to find out the cause of deflection, then decide on the repair technique. one solution could be increasing the size of the beam and adding extra reinforcement in order load carrying capacity of the beam, and increase flexural resistance to reduce deflection. Before application of this repair technique, the beam should be released from certain amount of loads through the provision of jacks for the secondary beams. The new cross section with the added reinforcement ratio should be analyzed for compute its load carrying capacity.

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Vineedh Mathew
Vineedh Mathew

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We have noticed some distress in the concrete columns in our apartment, and we have chosen to strengthen it using steel. We are using C section SAIL steel to be fixed on the two sides of the column till it ...

  1. aviratdhodare

    aviratdhodare

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    aviratdhodare

    There could be broadly two types of corrective treatment: a. Support the concrete column with adjoining steel column ( an ISMB section will be better.), for ordinary house 12 feet height column, suggested steel ISMB is 250X 150 mm section. b. if column is found reparable, it is renovated with ‘ JackRead more

    There could be broadly two types of corrective treatment:

    a. Support the concrete column with adjoining steel column ( an ISMB section will be better.), for ordinary house 12 feet height column, suggested steel ISMB is 250X 150 mm section.

    b. if column is found reparable, it is renovated with ‘ Jacketing ‘ around it. That is, scarp old peeling plaster, reach to reinforcing material, apply corrosive preventive liquids available from a good hardware store. Then, tie new reinforcement over the old reinforcement. Over it place 4-inch fresh cement concrete with aggregate of 12mm. Of course, steal or wooden scaffolding will be required.

    It will increase the size of the column but will give strength to it.

    BUT Note: if the column has already buckled down.. it is advisable to immediately get the help of an engineer and show him the site because if the column collapses, building or roof over it is in danger.

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vivek gami
vivek gami

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Which pressure us higher in retaining wall, water or soil?

  1. AdityaBhandakkar

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    In technical terms, Above the Water table, Pressure exerted by water on retaining wall = 0.5 K.H^2 K = coefficient of earth pressure H= vertical height of wall. Total stress = effective stress + pore water pressure. Earth pressure due to soil: Total stress = effective stress.  

    In technical terms,

    Above the Water table,

    Pressure exerted by water on retaining wall = 0.5 K.H^2

    K = coefficient of earth pressure

    H= vertical height of wall.

    Total stress = effective stress + pore water pressure.

    Earth pressure due to soil:

    Total stress = effective stress.

     

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vivek gami
vivek gami

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What is the different between development length and anchor length in beam and column?

  1. INDER KUMAR YADAV

    INDER KUMAR YADAV

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    INDER KUMAR YADAV Learner

    development length is the length that is needed to insert in the concrete so that can easily resist the force that is applied whereas anchorage length is the length of bar which is considered to be available when it is bended by some angle and it is provided at the support similarly, the developmentRead more

    development length is the length that is needed to insert in the concrete so that can easily resist the force that is applied

    whereas

    anchorage length is the length of bar which is considered to be available when it is bended by some angle and it is provided at the support

    similarly, the development length in the column will be the same as that of beam

    from the below image you can understand what I m saying about the development length and anchorage length of beam and column

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