Concrete Floor Vibration Design

L the design guide should not be applied to specification of tolerable vibration by the introduction of acceptance classes chapter 4 and l buildings prediction of floor response due to human.

Concrete floor vibration design. Floor vibrations are generally caused by dynamic loads. Guidance is given for. It is generally perceived that vibration is not an issue for reinforced concrete floor systems. Concrete industry sustainable construction strategy.

Because of the. Doubling the amount of concrete reinforcing steel doubled the stiffness of the floor and diminished the vibration without increasing the cost of the structural steel or reducing the. Although the original design resulted in a floor natural frequency of 3 hz a frequency of 6 hz was needed to isolate the vibration of the mechanical equipment. For buildings where users or equipment are sensitive to movements tight vibration criteria are appropriate.

Basic floor vibration principles and terminology. Vibration of precast prestressed concrete floors robert f. Typical mode shapes for steel concrete floor systems 800 900 1000 1100 700 600 500 mean 746 n force n time. The objective of this design guide is to assist the design professional in choosing an appropriate reinforced concrete floor system for situations where the effects from vibration must be considered and to provide simplified methods to determine key vibration characteristics of reinforced concrete floor systems that can be used to evaluate.

The structure such as clinical operations vibration was an important design consideration and the stringent vibration standard required for hospitals had to be met. Design of concrete floors for vibration. The design guide for vibrations of reinforced concrete floor systems was published in 2014 and stakes a claim as the first design guide developed to assist structural engineers with vibration analysis of reinforced concrete floor systems. Senior principal and director of engineering development berger abam engineers inc.

For slender floor structures as made in steel or composite construction serviceability criteria govern the design. B 1 evaluation of floor vibration problems 80 b 2 retrofit and remedial measures for steel concrete construction 81 b 3 retrofit strategies for machine induced vibrations 82 appendix c dynamic testing of building floors 84 c 1 modal testing 84 c 2 modal testing of floors with measurements made of the excitation force 86. Federal way washington 76 this paper is a summary of new information that has become available relating to the design of floor systems for vibration.