The floor plan of an industrial building is shown below.  Th…

The floor plan of an industrial building is shown below.  The roof is flat and the joists span in the north-south direction.  Three joists support a 4800-lb roof top unit (RTU).  The loading consists of roof live load (20 psf), dead load (including joist self-weight) = 10 psf, and the weight of RTU.  All the given loads are unfactored.      The maximum shear for joist design is nearly

Sammy is the mayor of Friendlyville and has been siphoning m…

Sammy is the mayor of Friendlyville and has been siphoning money from the Boys’ and Girls’ Club over the past six years, amassing a tidy sum of $58,000. When the scam comes to light, investigators interview Sammy, who disavows any knowledge of the crime, blaming the allegations on political enemies. John, the deputy mayor, who has known of Sammy’s illegal behavior for some time, provides a complete picture of Sammy’s crimes to investigators. Both John and Sammy are placed under arrest, but not before deleting as many emails about the subject as possible. The defendant(s) who would be guilty of committing perjury would include:​