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Structural Engineering

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Asked: September 25, 2020In: Structural Engineering

How do I remove a load bearing wall and extend?

aviratdhodare
aviratdhodare

aviratdhodare

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aviratdhodare

How do I remove a load bearing wall and extend (extension only on one side) the ground floor on a g+1 structure, and what will be the costing of this procedure?

  1. nikeetasharma

    nikeetasharma

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    nikeetasharma Guru
    Added an answer on November 25, 2020 at 1:18 pm

    A floor plan should be provided with sections showing column and beam layout. But it will be better if you hire a contractor.

    A floor plan should be provided with sections showing column and beam layout. But it will be better if you hire a contractor.

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Asked: July 20, 2020In: Structural Engineering

What is Castellated Beam?

vivek gami
vivek gami

vivek gami

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What is Castellated Beam? Why we provide it?

  1. Vivek Patel

    Vivek Patel

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    Added an answer on July 23, 2020 at 1:20 pm

    The castellated beam is a modified steel beam. In which the beam is cut in the central web portion were no great force is present. Cut near to neutral axis of the beam where we required less amount of material mass to resist various force. The opening shape may be hexagonal, rectangular, circular, eRead more

    The castellated beam is a modified steel beam. In which the beam is cut in the central web portion were no great force is present.

    Cut near to neutral axis of the beam where we required less amount of material mass to resist various force.

    The opening shape may be hexagonal, rectangular, circular, etc.

    Due to opening in web we get some benifit

    • Saving in material
    • Lighter weight
    • Due to increased depth allowed, we get more strengthen beam
    • Good aesthetic view
    • Esay handle with roof febrication work.
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Asked: July 20, 2020In: Structural Engineering

What is the compressive strength of Fe500 rebars?

CB Sowmya
CB Sowmya

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What is the compressive strength of Fe500 rebars?

  1. Kuldeep Singh

    Kuldeep Singh

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    Kuldeep Singh Learner
    Added an answer on July 21, 2020 at 10:30 pm

    It is generally assumed to be 250 MPa.

    It is generally assumed to be 250 MPa.

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Asked: July 19, 2020In: Structural Engineering

What are the benefits of T-beam in building compare to the ordinary beam?

Vivek Patel
Vivek Patel

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What are the benefits of T-beam in building compare to the ordinary beam?

  1. Preet Chovatiya

    Preet Chovatiya

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    Added an answer on July 24, 2020 at 5:45 pm

    T-beam is simply rectangular beam cast monolithically with the slab. Advantage os T-beam over ordinary beam:- T-beam casting with slab as we know so Its flange takes compressive stress and that mean It will resist more sagging moment of beam. Depth of beam is reduced as compare to ordinary beam so bRead more

    T-beam is simply rectangular beam cast monolithically with the slab.

    Advantage os T-beam over ordinary beam:-

    1. T-beam casting with slab as we know so Its flange takes compressive stress and that mean It will resist more sagging moment of beam.
    2. Depth of beam is reduced as compare to ordinary beam so better headroom advantage.
    3. Over longer span T-beam is used rather than ordinary beam for reducing the deflection of beam.

     

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Asked: October 15, 2020In: Structural Engineering

Can this type of brick bond be used for bearing walls?

Tengo Alaverdashvili
Tengo Alaverdashvili

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Hi. I am an architect and I’d like to hear your advise. Can this type of brick bond be used for a load bearing wall? I think that this zigzag form makes the wall stronger, but will it be enough? I ...

  1. Komal Bhandakkar

    Komal Bhandakkar

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    Added an answer on November 5, 2020 at 8:50 pm
    This answer was edited.

    In masonary work, we used usually 1:4 cement-sand mortar of compressive strength 3.8N/mm2. The compressive strength of one brick of standard size is 11.12N/mm2. The compressive strength of brick masonry is 2.5 N/mm2.  Thanks.  

    In masonary work, we used usually 1:4 cement-sand mortar of compressive strength 3.8N/mm2.


    The compressive strength of one brick of standard size is 11.12N/mm2.


    The compressive strength of brick masonry is 2.5 N/mm2.


     Thanks.  

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Asked: April 27, 2019In: Structural Engineering

How to Calculate Reinforcement Steel Overlap Length?

onejohi
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How to calculate length of overlap for reinforcement steel?

  1. Gopal Mishra

    Gopal Mishra

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    Gopal Mishra
    Added an answer on April 27, 2019 at 6:50 pm

    Lapping of reinforcement is usually done where minimum bending stress is required. In general, lap length is 50d which means 50 times the bar diameter is provided if both bars are of same diameter. Lap length in tension: The lap length including anchorage value of hooks shall be For flexural tensionRead more

    Lapping of reinforcement is usually done where minimum bending stress is required. In general, lap length is 50d which means 50 times the bar diameter is provided if both bars are of same diameter.

    Lap length in tension:
    The lap length including anchorage value of hooks shall be

    For flexural tension – Ld or 30d whichever is greater is considered.
    For direct tension – 2Ld or 30d whichever is greater is considered.
    The straight length of lapping of bars shall not be less than 15d or 20cm.

    Lap Length in Compression:
    The lap length is equal to the development length calculated in compression but not less than 24d.

    For Different Diameter Bars:
    When the bars of different diameters are to be spliced, the lap length is calculated considering the smaller diameter bar.

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Asked: September 19, 2020In: Structural Engineering

What happens when the thrust line coincides with the bottom Vern axis of beam? (Prestressed concrete)

aviratdhodare
aviratdhodare

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What happens when the thrust line coincides with the bottom Vern axis of beam? (Prestressed concrete)

  1. nikeetasharma

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    Added an answer on November 26, 2020 at 1:24 pm
    This answer was edited.

    Basically, shear force is the combination of flexural compression which result as C and tends to form an inclined thrust line known as arch. For example consider a simple strut and tie model. Here it may be technically expected that the shear force is supported by the longitudinal resultant.   NαVcoRead more

    Basically, shear force is the combination of flexural compression which result as C and tends to form an inclined thrust line known as arch. For example consider a simple strut and tie model. Here it may be technically expected that the shear force is supported by the longitudinal resultant.  

    NαVcotθNa=αVcotθ

    Shear force is the product of shear stress and area. Thrust line can also affect the stability. 

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Asked: May 18, 2020In: Structural Engineering

How to use steel to alleviate structural distress in column due to corrossion?

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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    Added an answer on September 9, 2020 at 3:07 pm

    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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