Other than a project or two where I looked at vibration from machinery, I never worried too much about vibration in floor / floor framing design. Typically, I never had to. Manufacturers of floor joists (e.g., prefabricated wood I-joists) worry …
was called once to a movie set. It was in an old house, out in the country. There was considerable `bounce’ in the upper story floor, and they wondered if it was `safe’ (… to do their filming). I did …
E app (`Eee app’, `Eee apparent’, Apparent Modulus of Elasticity) is a design property for wood construction. It comes from the Modulus of Elasticity of the wood (E, MOE, Young’s Modulus). It’s not a `true’, or `pure’ property, and it …