This document discusses mechanics of solids and support reactions. It covers different types of beams like simply supported, cantilever, continuous beams. It also discusses types of loads like point load, uniformly distributed load, uniformly varying load. Support types covered are simple support, hinged support, roller support and fixed support. The document contains examples to calculate reactions at supports for beams under different loading conditions.

1. Mechanics of solids
Support reactions
‫الرحیم‬ ‫الرحمن‬ ‫هللا‬ ‫بسم‬

2. Prepared by :
 EHSANULLAH AYDIN
 151100106078
Wahedullah ehsas
151100106080
Shuaib kohee
101100106079
Guided by :
Prof. nilesh parmar,
Prof. mihir naik

3. content
• Introduction
• Types of beams
• Types of loads
• Types of supports
• examples

4. INTRODUCTION
Beam is a structural member subjected to transverse loads. It’s
length is large in comparison with its cross-sectional
dimensions.
Loads from slab, floor, wall, etc… transferred to column
through beam. Due to loading on beam reactions developed at
the supports.
This chapter deals with different types of beams, types of
loads, types of supports and reaction occurring at the
supports.

5. Types of beams
1. Simply supported beam :
2. Overhanging beam :
 different types of beams are shown below

6. 3. Cantilever beam :
It has one end fixed and other end free.
4. fixed beam :
It has both ends fixed.

7. 5. Continuous beam :
It has more than two supports.
6. Propped cantilever beam :
One end fixed and the other end simply supported.

8. Types of loads
1. Point load or concentrated load :
 there are three types of loads :
The load concentrated at one point is called
point load.
Unit of point load is N or KN.
e.g. 20 KN, 100 KN, 60 KN etc…

9. 2. Uniformly distributed load :
 load uniformly distributed on certain length
of a beam is called uniformly distributed load.
Unit of U.D.L is kN/m or N/m,
Form example,
20 kN/m, means 20 kN load on 1m length.

10. 3. Uniformly varying load :
 this type of load gradually increase or
decrease on the length of the beam.
 it is also called triangular load.

11. Types of supports
1. Simple support :
 different types of supports are :
 In this type of support, beam is simply supported on the support.
 There is no connection between beam and support.
 At this type of support, only vertical reaction will be produced.

12. 2. Hinged support :
Beam and support are connected by a hinge.
Beam can rotate about the hinge.
Reactions may be vertical, horizontal or inclined.

13. 3. Roller support :
In this type of support, rollers are placed below beam
and beam can slide over the rollers.
Reaction will be perpendicular to the surface on which
rollers are supported.
This type of support is normally provided at the end of a
bridge.

14. 4. Fixed support :
Beam is completely fixed at end in the wall or support.
Beam can mot rotate at end.
Reactions may be vertical, horizontal, inclined and
moment.

15. Taking moment @ A :-
vb
x6=(12x2x1)+(30x3)+30+(22.52
x5)
∴ Vb = 42.76 kN
∴ va + Vb = 24+30+22.5
∴ Va = 33.76 kN
∴ Ha = 22 cos 60⁰ = 10.39 kN GTU, DEC 2010

16. tanӨ =15/8 ∴ Ө = 61.92⁰
Taking moment @ A :-
vb x 2.5 = 150x2.8
∴ Vb = 168 kN
∴ va + Vb = 150
∴ Va = - 18 kN
∴ Ha = 170 cos61.92⁰ = 80
kN
GTU, MARCH/APRIL 2010

17. REFERENCE BOOK :
MOS , DR.R.P.RETHALIYA ,ATUL PRAKASHAN

18. THAN YOU TO TAKING YOUR TIME TO LISTEN TO
MY POWER POINT PRESENTATION.