Types of loads

Definition

3. •POINT LOAD ( CONCENTRATED LOAD)
•UNIFORMLY DISTRIBUTED LOAD. ( UDL)
•UNIFORMLY VARYINGLOAD (UVL)
•ROLLING LOAD

4. •POINT LOAD ( CONCENTRATED LOAD)
Load acting at a definite point on a beam is known as a
concentrated load or point load.
Units -Newton, kilo Newton etc.

5. •UNIFORMLY DISTRIBUTED LOAD
( udl) OR RECTANGULAR LOADING
A load which is spread over a beam in such a manner that
each unit length is loaded to the same intensity is known as
uniformly distributed load.
It is measured in intensity with units Newton/Meter.

6. •UNIFORMLY VARYING LOAD. ( uvl) OR
TRIANGULAR LOADING
A load which is spread over a beam in such a manner that
the intensity of loading varies uniformly on each unit length
is known as uniformly varying load .
It is measured in intensity with units Newton/Meter.

7. •ROLLING LOAD
Rolling loadsare thoseloadswhich roll over the given
structural element from one end to the another.
In this type of loading magnitude of Bending moment and
shear force will go on change in position of loads
Eg:-A train on the railway track, vehicles on the bridges or
roads arerolling loads.

8. •SIMPLESUPPORT
•ROLLERSUPPORT
•HINGEDSUPPORT
•FIXEDSUPPORT

9. •SIMPLESUPPORT
When a beam rests freely on a support, then such a
support is known as simply or simple support.
In this type of support, the beam is allowed torest
freely on asupport.

10. •ROLLERSUPPORT
When a beam end is supported on roller, then such support
is known as roller support.
Support reaction is normal..
Roller supportsare free to rotate and translate along the
surface upon which therollerrests(ie, about the support).
The surface can be horizontal, vertical, or sloped at any
angle. The resulting reaction force is always a single force
that is perpendicular to, and away from, the surface.

11. •HINGEDSUPPORT OR PINNED SUPPORT
A hinged support is a support which restricts the
movement of the beam in any direction but it will allow
the beam to rotate about the support just like a door.
A Hinged beam support can resist both vertical and
horizontal forces but not a moment.
They will allow the structural member to rotate, but not to
translate in any direction..

12. •FIXED SUPPORT OR RIGID SUPPORT
Fixed supportscan resist vertical and horizontal forces as
well as a moment.
Since they restrain both rotation and translation, they are
also known as rigidsupports.
A structure only needs onefixed supportin order to be
stable
.

15. •Any horizontal structural member
sufficiently long as compared to its lateral
dimensions, supported at certain points
along its length, subjected to external forces
acting right angles to its axis is known as a
beam.

16. •SIMPLY SUPPORTED BEAM
•CANTILEVERBEAM
•FIXEDBEAM
•OVER HANGING BEAM
•CONTINUOUS BEAM
•BEAM WITH ONE END HINGED AND THE
OTHER ENDROLLER

17. •SIMPLY SUPPORTED BEAM
•When both ends of the beam are simply supported, it is
called a simply supported beam or freely supported beam.

18. •CANTILEVERBEAM
•If one end of the beam is fixed and other end is free then it
is called a cantilever beam.

19. •FIXEDBEAM
A beam whose both ends are rigidly fixed then it is
known as a fixed beam or encasterbeam or rigid
beam or restrained beam.

20. •OVER HANGING BEAMS
If a beam is projecting beyond the support or supports
then it is called an overhanging beam.
If one or both ends of a beam is projecting beyond the
supports, then it is called an over hanging beam

21. •OVER HANGING BEAMS
•A. Right over hanging beam
•B. Left over hanging beam
•C. Both sides over hanging beam

22. •CONTINUOUS BEAM
•If a beam is supported on more than two supports
then it is called a continuous beam.
•A continuous beam may or may not be an
overhanging beam.

23. •BEAM WITH ONE END HINGED AND THE OTHER
ENDROLLER
This beam has one of its ends hinged and the other side of
the beam is supported withroller.
These kind of beams are capable to withstand loads in any
direction

25. Spanis the distance between two intermediate
supports.

26. 1.CLEAR SPAN
2. EFFECTIVE SPAN
3. TOTAL SPAN

27. 1.CLEAR SPAN ( L )
Clear Span is the horizontal distance
between the two inside surfaces of
thespansupports.

28. 2.EFFECTIVE SPAN ( l )
The centre to centre distance between two
supports is calledeffective span.

29. 3.TOTAL SPAN
The outer to outer distance between two
supports is calledeffective span.

30. 1.What are the different types of loading ?
2.Differentiate between udland uvl
3.What is a rolling load ? Cite examples for it ?
4.What are the different types of supports? Explain it.
5.What is a beam?
6.What are the different types of beams? Explain it?
7.Differentiate between clear span and effective span.

31. 1.Define a) Point load, b) Uniformly distributed load, 3) triangular loading
and d) Rolling load.
2.What is a Cantilever beam?
3.What is an overhanging beam?
4.What is a fixed beam?
5.What is a continuous beam?
6.What is total span?
7.What is clear span ?
8.What is effective span?

32. 1. R.S.Khurmi: Applied Mechanics & Strength of Materials;
S. ChandPublishing
2. M.Chakrabroti: Strength of materials ; S.K Kataria&sons.
3. R.K.Rajput: Strength of Materials ; S. ChandPublishing
4. S.S.Bhavikatti: Strength of Materials ; VikasPublishing
House PvtLtd,
5.K.N.A.G.K. Manikanta: Theory of structures –I; Radiant
Publishing House