Simply supported, or fixed beam ?

@zaveri-5TD6Sk • Oct 23, 2024

Oct 23, 2024

1.8K

What kind of a beam is a ceiling joist ?

Obviously it sounds like fixed type. but last month i was going through a solid-mechanics text book, and it said that the type was simply supported.

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Jeffrey Arulraj

@jeffrey-xA7lUP • Sep 15, 2012

what is a ceiling joist can any one post a picture of it
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pikachu1994

@pikachu1994-UcQIIJ • Sep 15, 2012

jeffrey samuel
what is a ceiling joist can any one post a picture of it

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Jeffrey Arulraj

@jeffrey-xA7lUP • Sep 15, 2012

from picture there is no point in concluding that this is a simply supported beam

the true definition of fixed beam is that the beam is attached to the column by some binders like RCC and stuff
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Saiwal

@saiwal-NOzuWb • Sep 16, 2012

the beam shown in the picture is a continuous beam. Simply supported and fixed beams are ideal cases which rarely exist in real world applications.
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zaveri

@zaveri-5TD6Sk • Sep 17, 2012

let me tell you the difference between a fixed beam and a simply supported one;

fixed beam: all degrees of freedom at the end points of this beam are arrested. in other words, the beam is stiffly fixed at both the ends.

simply supported beam: degrees of freedom only along the y-direction is arrested. it can still move in the x and z-directions.

now coming back to the ceiling joist, it appears to be fixed rigidly, so then how is it simply supported ?
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Jeffrey Arulraj

@jeffrey-xA7lUP • Sep 17, 2012

it is continuously supported held there is provision either to fix it or let it be free
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vamsi kancharla

@vamsi-kancharla-kL9oxU • Oct 6, 2012

zaveri
What kind of a beam is a ceiling joist ?

Obviously it sounds like fixed type. but last month i was going through a solid-mechanics text book, and it said that the type was simply supported.
it is not simply supported it bears ceeling weight and transfers to ground through PILLARS or COLOUMNS
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Jeffrey Arulraj

@jeffrey-xA7lUP • Oct 6, 2012

yup but we don't see any fixing of the beam to any of them they are placed on top of em with out being clamped tight
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Mohamed Amir

@mohamed-amir-GNsD1j • Nov 3, 2012

it is partially not totally fixed.......
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