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

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Asked: July 19, 20202020-07-19T13:06:25-07:00 2020-07-19T13:06:25-07:00In: Structural Engineering
Vivek Patel
Vivek Patel

Vivek Patel

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

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  1. Abbas Khan Civil Engineer

    Abbas Khan Civil Engineer

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    Abbas Khan Civil Engineer Learner
    2020-07-19T21:32:48-07:00Added an answer on July 19, 2020 at 9:32 pm

    benefits Of T-Beam;

    1- T beams have greater second moment of inertia as compared to the ordinary beams, so they have greater ability to resist bending effectively.

    The distribution of the material mass in the T-beam is consist of Flanges and web. Flanges are more effective in resisting bending stresses while the Web is more resistive in shear stresses.

    2- The T-beam has separate parts for resisting both bending and shear forces as a result very good in resisting stresses as compared to ordinary rectangular beams in buildings and bridges.

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  2. Kuldeep Singh

    Kuldeep Singh

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    Kuldeep Singh Learner
    2020-07-19T21:33:57-07:00Added an answer on July 19, 2020 at 9:33 pm

    T-beams are generally preferred to rectangular beams and L-beams.

    First of all, it performs better in bending since it has a higher second moment of inertia. The compressive load on the slab is shared by the flange of the T-beam (because it is cast monolithically with the slab), which increases the moment of resistance. This also reduces the need for additional compression reinforcement at the top. Rectangular beams are only singly reinforced in our textbooks. In practice, rectangular beams have to be reinforced doubly. Still, T-beams don’t need to.

    The flange is more effective in bending and providing ductility. The web is more effective in shear. If you look at the stress distribution diagram of a T-beam, you’ll see that the bending stress is distributed more in the flange and shear stress more on the web. Hence, the resulting bending+shear is lower for any cross-section than in rectangular beams, where the two add up.

    Due to the above two points, deflection is significantly reduced in the case of T-beams.

    Also, we know that the concrete below the neutral axis is hardly contributing to the beam strength since it’s in tension. So why not remove it? The moment of resistance will be comparable for a rectangular beam and a T-beam with the same depth. Hence, T-beams are always more economical than rectangular beams. In fact, it is the least expensive among the common beam shapes except for box girders used in bridge decks.

    T-beams have a lesser volume of concrete. Also, they reduce the floor to floor height since the flange is already part of the slab. These two things in combination significantly reduce the concrete required for the building, cutting down both cost and dead weight.

    Lastly, T-beams are more convenient for pre-fabrication buildings.

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  3. Preet Chovatiya

    Preet Chovatiya

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    Preet Chovatiya Learner
    2020-07-24T17:45:16-07:00Added 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:-

    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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