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Mechanism and static determinacy

The answer for b) should have a redundancy of second degree - j = 6, r = 6, b = 8, i = (b+r) - 2j = (8+6)-2*6 = 2. For c), redundancy of third degree - j = 5, r = 6, b = 7, i = (7+6) - 2*5 = 3. For ...
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Symmetry to determine the support reactions of a statically indeterminate frame

The members and loads of the frame are symmetric about joint "B", but the supports are not, which is the source that causes non-conforming deflections when loaded. The sketches below depict ...
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What is the cause of this cracking pattern in a simply supported beam?

Below is my inspection. Note the cracks between the support points - from diagonal near support and gradually turns vertical towards the midspan. Street View: The cracks in the circle forms the ...
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Is it valid to solve for the young's modulus required for a given critical load with Euler Columns?

Yes you can use the formula to solve for an acceptable modulus of elasticity (E) that prevents buckling. Like any mathematical formula that relates 4 variables, you can calculate any variable based on ...
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Is it valid to solve for the young's modulus required for a given critical load with Euler Columns?

As the expression suggests, Pcr is a function of (E, I, L), in other words, Pcr is can not be assumed as an arbitrary number, nor can be predetermined without knowing the parameters it is based on. So,...
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Is it valid to solve for the young's modulus required for a given critical load with Euler Columns?

No we could not. colums buckle under a random load usually les than the Euler's buckling load due to many reasons, such as manufacturing defects or material residual stress. Two columns with same ...
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