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Category: Structural Engineering
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Experience:  Over 30 years of Structural Engineering experience.
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The first floor bounces. Span is too long (15 feet)

Customer Question

The first floor bounces. Span is too long (15 feet) for the size of joist or species of wood.
Submitted: 2 years ago.
Category: Structural Engineering
Expert:  StructuralEng replied 2 years ago.
You have 2x10 joists spanning 15'? Floor vibrations with wood structures is a very complex structural dynamics problem and is more subjective than strength design. Is it a large open space?