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The reason for applying "massless steel" to the sign is a result of the problem specification.  The uniformly distributed load WZ1 represents the weight of the sign body. 

Note: It is more correct to treat the weight of the sign as a body force by applying the acceleration of gravity to all bodies.  However, a uniformly distributed load WZ1 was applied for closer agreement between analytical calculations and the FEA model..

Note: To prevent a "pivot warning" message from appearing in the numerical solution, change the thickness of the WX2_ApplicationSurface to 1e-3.

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