Civil Engineering - Strength of Materials - Discussion
Discussion Forum : Strength of Materials - Section 2 (Q.No. 15)
15.
The reaction at support A of the beam shown in below figure, is
Discussion:
61 comments Page 3 of 7.
Ammu said:
7 years ago
They asking load only not moment. Moment at the support A will be zero, Not reaction.
Bambhaniya Sunil said:
7 years ago
5T is the correct answer.
Tayu said:
8 years ago
You are right, Thanks @Gani.
Tayu said:
8 years ago
Assuming Ra, Rb And Rb from right to left respectively,
The beam is hyperstatic and the normal equations of static alone does not suffice, using other methods the reactions will be 3T/16, 5T/16 and 3T/16 respectively, so the right answer is not given.
The beam is hyperstatic and the normal equations of static alone does not suffice, using other methods the reactions will be 3T/16, 5T/16 and 3T/16 respectively, so the right answer is not given.
Vinayak Powar said:
8 years ago
The Answer should be 2.5T.
Sajitha B said:
8 years ago
The total load is 10t. For the three supports, the reaction due to the load will be same and equal to 3.33T.
Eshetu said:
8 years ago
The question is not clear to me. Please explain.
Roop said:
8 years ago
Yes, correct @Vikas.
By moment distribution method Ra is 1.875 T.
By moment distribution method Ra is 1.875 T.
Mani said:
8 years ago
In simply support beam Ra=Rb when centering load so we first change the uniform load.
To point load so,
Ra=Rb.
1*10*1/2=5T.
So reaction at Ra+Rb=5.
Ra+Ra=5 (Ra=Rb).
2ra=5.
Ra=2.5 t.
To point load so,
Ra=Rb.
1*10*1/2=5T.
So reaction at Ra+Rb=5.
Ra+Ra=5 (Ra=Rb).
2ra=5.
Ra=2.5 t.
Mohammed yasin said:
8 years ago
Simply moment at pin and roller support is zero, but if you want to how to get its value.
Ray+Rby=1*10,Ray+Rby=10.
Then, take moment at support a,Ma =0,Rby*10-10*5=0, Rby=5
Then, Ray+Rby=10,Ray=5.
Take moment at A,Ma=10*5-Rby * 10,
Ma=10*5-5*10,
Ma=0.
Ray+Rby=1*10,Ray+Rby=10.
Then, take moment at support a,Ma =0,Rby*10-10*5=0, Rby=5
Then, Ray+Rby=10,Ray=5.
Take moment at A,Ma=10*5-Rby * 10,
Ma=10*5-5*10,
Ma=0.
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