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Structural Engineering

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Asked: September 25, 2020In: Structural Engineering

How do you calculate twisting moment?

nikeetasharma
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how to calculate twisting moment?

  1. nikeetasharma

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    Added an answer on October 15, 2020 at 10:10 am

    Torsion is the twisting of a beam under the action of a torque (twisting moment). It is systematically applied to screws, nuts, axles, drive shafts etc, and is also generated more randomly under service conditions in car bodies, boat hulls, aircraft fuselages, bridges, springs and many other structuRead more

    Torsion is the twisting of a beam under the action of a torque (twisting moment). It is systematically applied to screws, nuts, axles, drive shafts etc, and is also generated more randomly under service conditions in car bodies, boat hulls, aircraft fuselages, bridges, springs and many other structures and components. A torque, T , has the same units (N m) as a bending moment, M . Both are the product of a force and a distance. In the case of a torque, the force is tangential and the distance is the radial distance between this tangent and the axis of rotation.

    All torsion problems can be solved using the following formula:

    T/J = shear stress/ r = (G * angle)/ L

    where:

    T = torque or twisting moment, [N×m, lb×in]
    J = polar moment of inertia or polar second moment of area about shaft axis, [m4, in4]
    τ = shear stress at outer fibre, [Pa, psi]
    r = radius of the shaft, [m, in]
    G = modulus of rigidity (PanGlobal and Reed’s) or shear modulus (everybody else), [Pa, psi]
    θ = angle of twist, [rad]
    L = length of the shaft, [m, in]

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Asked: September 8, 2020In: Structural Engineering

What is the introductory rate analysis of SS Masonry?

aviratdhodare
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What is the introductory rate analysis of SS Masonry?

  1. Komal Bhandakkar

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    Added an answer on November 20, 2020 at 3:47 pm
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    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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Asked: September 25, 2020In: Structural Engineering

How do I remove a load bearing wall and extend?

aviratdhodare
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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

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    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: September 19, 2020In: Structural Engineering

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

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
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    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: September 19, 2020In: Structural Engineering

What is a convergent beam? Why is it so important?

aviratdhodare
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What is a convergent beam? Why is it so important?

  1. Komal Bhandakkar

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    Added an answer on November 20, 2020 at 3:46 pm
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    A convergent beam of light: Whenever several rays coming from different directions & meet at a single point are nothing but the Light's convergent beam. Thank You.

    A convergent beam of light:

    Whenever several rays coming from different directions & meet at a single point are nothing but the Light’s convergent beam.

    Thank You.

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Asked: September 12, 2020In: Structural Engineering

What is Redundant Truss?

AdityaBhandakkar
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What is Redundant Truss?

  1. Komal Bhandakkar

    Komal Bhandakkar

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    Added an answer on November 20, 2020 at 3:47 pm
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    Redundant Truss: It is a truss that includes a maximum number of structural members more than the requirement. Using the equation of equilibrium, it is impossible to analyze. It is a statically indeterminate type of structure. Thank You.

    Redundant Truss:

    It is a truss that includes a maximum number of structural members more than the requirement.


    Using the equation of equilibrium, it is impossible to analyze.


    It is a statically indeterminate type of structure.


    Thank You.

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Asked: August 15, 2020In: Structural Engineering

What is the maximum width of stair case for public buildings?

AdityaBhandakkar
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What is the maximum width of stair case for public buildings?

  1. nikeetasharma

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    Added an answer on November 26, 2020 at 12:56 pm

    For reduced use staircases such as accesses to lofts, attics and terraces, the minimum width shall be 600mm. The minimum tread shall be 250mm excluding nosing and the maximum riser will be 175mm for all buildings except for internal staircases of apartments, which can be permitted upto 190mm.

    For reduced use staircases such as accesses to lofts, attics and terraces, the minimum width shall be 600mm. The minimum tread shall be 250mm excluding nosing and the maximum riser will be 175mm for all buildings except for internal staircases of apartments, which can be permitted upto 190mm.

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Asked: August 15, 2020In: Structural Engineering

Which is the most economical way of roofing for rural areas?

AdityaBhandakkar
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Which is the most economical way of roofing for rural areas?

  1. nikeetasharma

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    Added an answer on November 23, 2020 at 11:41 am

    The following are the most economical way of roofing for rural areas :- 1. Partial roofs 2. Slate roofs 3. Porches 4. Stone roofs 5. Galvanized roofs 6. Tile stone coated roofs

    The following are the most economical way of roofing for rural areas :-
    1. Partial roofs
    2. Slate roofs
    3. Porches
    4. Stone roofs
    5. Galvanized roofs
    6. Tile stone coated roofs

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