Benchmark solution
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Calculation method used for the reference solution
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Analytical solution:

• Normal effort in each of the bars :math:`\mathrm{AC}` and :math:`\mathrm{BD}`: :math:`N=\rho .\mathrm{L.A.g}/2`

• Move :math:`{U}_{y}` in :math:`C` and :math:`D`: :math:`{U}_{y}\mathrm{=}\mathit{NL}\mathrm{/}\mathit{ES}`


Benchmark results
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• Normal effort in bars :math:`\mathrm{AC}` and :math:`\mathrm{BD}`: :math:`N={4.10}^{5}N`

• trips to :math:`C` and :math:`D`: :math:`{U}_{y}=2{10}^{-5}m`


Uncertainty about the solution
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Analytical solution.