Construction Practices for Wood I-Joist Floor Vibration Retrofit

Floor vibration is the natural result of dynamic forces acting upon a floor system, caused by something as simple as people walking across a room. Regardless of floor type, all above-grade floors are subject to some degree of vibration.

This publication is designed for: builders, contractors, engineers

This publication provides practical guidance for addressing floor vibration in existing wood I-joist systems. It provides proven retrofitting techniques that builders and contractors can use to minimize excessive vibration.

Key sections include:

• Removal of vibrating articles

• Soft-spot correction

• Increasing floor stiffness or mass

• Floor joist reinforcement

• Floor sheathing/covering

• Ceiling board attachment

• Bridging

• Span reduction

Published by APA — The Engineered Wood Association.