First, pick the point along the beam at which you need the bending moment. Then make sure that all the forces on the beam to the right of the chosen point are correctly known. Then calculate the moment about the chosen point each of those forces contributes . Add these up and that is the answer.
For example, consider a 12 metre beam supported at the 4 metre point and the 12 metre point. There is a 10 Kg load at the 0 metre end and a 40 Kg load at the 10 metre point.
Find the bending moment at the 8 metre point.
First we need the loads at the two supports, L1 and L2.
L1 + L2 = 10 + 40 = 50 Kg Total forces up equals total forces down.
And we shall work out all clockwise and anticlockwise moments about the support at the 4 metre point. (The total moments about any point is zero.)
Clockwise: 40x6
Anticlockwise: 10x4 + L2x8
Putting clockwise = anticlockwise we get 240 = 40 + 8xL2 hence L2 = 200/8
And from L1 + L2 = 50 we now get L1 + 25 = 50 hence L1 = 25
So to answer the question - Find the bending moment at the 8 metre point -
we just sit at the 8 metre point and look right. We see the 40 Kg load 2 meters away pushing down and the 25 Kg up-force at the end, 4 meters away.
That makes a moment of 40x2 mKg clockwise and 25x4 anticlockwise. That results in a total of 25x4 - 40x2 anticlockwise. The answer is 20 mKg anticlockwise ( upward) about the 8 meter point.
The slabs that are supported only at end are called simply supported slabs i.e. there is no intermediate supports in the slab and there will be no support moment acting on the slab.
zero
Reinforcements is provided to resist moment and shear force, in a simply supported beam maximum moment at centre and its reduces towards (zero)support. so no 100% reinforcments at support required, so curtailment is possible (max 50%) at ends.
It depends on the loading conditions of the beam, it will generally occur close to the middle of the span.
a slab of a house suupported with RCC frame column & beam, What will be the bending moment in different spans. ER. J.S.DEORI
It is a beam that is attached at aboundary that is free to rotate, like a hinge. It cannot develop a bending moment. It is often used to idealize a simply supported beam
A cantilever beam is a beam which is fixed at one end ( no translation or rotation). A propped cantilever beam is a beam which is fixed at one end ( no translation or rotation) and simply supported ( no translation) at the other end. A cantilever beam is a beam which is fixed at one end ( no translation or rotation). A simply supported beam is a beam which is simply supported at both ends. A propped simply supported beam is a beam which is simply supported at both ends and simply supported at some other point such as at the center, to reduce deflection under load. Propped beams are statically indeterminate.
Parabolic, max moment at midspan of value wL^2/8 where w is the distributed load and L the length of the beam.
You have it backwards. Theories are supported by evidence. Evidence is not supported by theories, evidence is simply observed.
They are supported by pillars are column's.
because the deflection in simple suported beam is more due to the orestriction at the ends as the ends are freely supported by twoo supports
The plural form of moment is simply moments.