Designing for Wind-Induced Motion for Tall Buildings

Chairs: Jon Galsworthy and Kenny Kwok

Objective: To overview the current state-of-the-art related to the design of tall buildings against wind, including issues of occupant comfort and damping (both inherent and supplemental)

Charge from Chair:  Produce/Update Existing monographs reflecting the best practices for building response to wind excitations and wind resistant design, including:

1. historical review and state-of-art in evaluating wind-induced responses of tall buildings

2. codification in international standards

3. critical issues to be considered when designing building in different parts of the world and under different wind environmental/conditions

4. Impact/sensitivity of wind-induced responses to variations in structural dynamics and aerodynamics

 Proposed Task Groups:

Damping Guidelines (led by Tracy Kijewski-Correa)

1. Collect information related to Tall Building Damping Values
2. Document impact of damping on the behavior of tall buildings and its impact on serviceability conditions
3. Correlate assumed and actual measured damping values

Human Perception Criteria (led by Melissa Burton)

1. Summarize various criteria, factors influencing human perception
2. Document response of occupants to actual wind events (if available)
    

State-of-the-Art in Control (led by Jameson Robinson)

1. Summarize current technologies for supplemental damping
2. Discuss recent trends of control systems as integral part of design

Status: Newly reorganized; timeline TBD

Full-Scale Monitoring for Tall Buildings

Chair: Tracy Kijewski-Correa

Objective: The Tall Buildings Committee created this subcommittee with the charge of assembling best practices with respect to full-scale monitoring of tall building. This document represents the end-result of this effort. Major sections of this report include the origins and benefits of monitoring, state-of-the-art in instrumentation and minimum requirements, signal processing issues, data management and processing techniques, a summary of full-scale efforts to date and lessons learned. While all are in agreement that full-scale monitoring of tall buildings is incredibly vital for validating in-situ performance of some of society's most expensive investments, access to these buildings is given only at the discretion of owners who often have more to lose than gain from the findings. Thus without proper incentive, continued access and expansion of monitoring programs are in jeopardy.

Comment by Chair: While some hardware and applications are cited as examples, this is no way should be viewed as an endorsement of these products or projects by the ASCE/SEI Tall Buildings Committee and reflect only the opinions and experiences of the chair who authored the document. I hope the committee will take an opportunity to review the draft and contribute to the document based on their experiences.

Status: Draft submitted May 2, 2009 [PDF], open  for comment

Chairs: Abbas Aminmansour, Kyoung Sun Moon

Coverage: historical overview, issues of egress and evacuation, and sustainable design

Status: Just formed, projected timeline to monograph is 48 months