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hello guys I hope you're having a great
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time our today's video is going to be an
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amazing informative and interactive one
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we're going to explain in detail about
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the different types of supports you'll
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deal with in Structural Engineering so
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let's begin our video without wasting
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any time you know what supports are one
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of the most critical aspects in any
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structure supports provide stability and
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strength in fact they're responsible for
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transferring the load from one member to
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the ground so if you're dealing in
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structures you must know about the
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different types of supports and how they
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differ you might have heard about fixed
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support roller support simple support or
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hinge support but what are they all well
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these supports are responsible for
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providing restraint to the structural
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member to avoid lateral or vertical
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movement or deflection they're in fact
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the reason why structures are able to
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resist forces and transfer them safely
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these supports are also responsible for
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in a structural member you know what
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depending on the type of support and the
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member these supports can provide
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restraints in various directions so
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let's now start our first type of
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support that is Roller support roller
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supports can only resist perpendicular
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forces but are free to move laterally
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they allow for movement along surfaces
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without resistance to horizontal forces
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so you know roller supports can be in
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the form of rubber bearings or gears for
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instance consider consider a load on
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roller skates the weight remains in
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place if there is no horizontal Force
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however once a horizontal force is
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applied the body starts moving roller
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supports are advantageous especially in
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Bridge construction we generally place
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roller supports at the end of bridge
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spans in the form of bearing pads roller
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supports are also used in frame cranes
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and allow for right or left movement the
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disadvantage of roller supports is that
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they cannot resist horizontal forces and
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there is a need for other types of
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support to resist these forces in a
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structure the next on our list of
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supports is hinge support or pin support
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pin support is pretty common in civil
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engineering a pinned support does not
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allow movement either vertically or
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horizontally but allows for rotation
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well I mean in most cases a pin support
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only allows for twisting in One
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Direction a good example is a human knee
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it provides for turning in One Direction
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but resists lateral movements it is rare
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to find ideal pin support in practice
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however simply supported beams are
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typically regarded as pinned the support
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conditions affect the distribution of
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moments in the beam we also use pinned
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supports in trusses and three hinged
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arched Bridges the advantage of pinned
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supports is that it makes it easy to
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join multiple members together the
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joining induces an axial force and since
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the supports do not resist any moments
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the design is limited to the axial
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Force the only limitation of pin
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supports is that a single pin support
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cannot completely restrain a structure
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one needs at least two pin supports for
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restraint let's now move on to the next
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support that is fixed support well as
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the name suggests fixed supports are the
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most rigid types of supports that
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constrain structural members from any
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movements the structural member cannot
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rotate or translate in any direction a
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perfect example of a fixed support is a
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flag pole with a concrete base the pole
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cannot move or rotate in any direction
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generally for the stability of a
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structure the structure should at least
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have one fixed support this support
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offers more excellent structural
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stability than any other kind of support
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fixed supports are advantageous in
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situations where you can only use one
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support such as caner lever beams they
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ensure a structure is adequately
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constrained and static sometimes the
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most significant Advantage also serves
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as the greatest disadvantage a structure
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might need some wiggle room but fixed
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supports do not allow it as concrete
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gains strength in also expands therefore
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an improperly designed support May
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reduce durability in the structural
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members brought about by the increase in
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stresses the next is simple supports
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simple supports are when structural
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members rest on other members simple
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supports are like roller supports
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whereby the members can resist vertical
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forces but they cannot restrain
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horizontal forces an excellent example
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of such a support is a plank of wood
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resting on two blocks of stone the plank
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can resist the vertical load but can
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cannot resist the corresponding
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horizontal forces if you apply a sheer
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force the plank will support it but a
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horizontal force will quickly get the
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plank to slide off the support simple
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supports are rarely used in engineering
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as they pose a considerable safety risk
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Engineers sometimes use these supports
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are in areas that experience frequent
