Respirable Silica Dust Exposure During Drilling into Concrete

Wednesday, May 1, 2019 | 12 – 1 PM (PST)

Presented By: Alan Barr, OEM Engineer - UCSF

This presentation will explore some of the research conducted by the UC Ergonomics Program at the Test Bench Facility. Learners will review factors influencing the amount of respirable silica in a worker's breathing zone while drilling into concrete, and what steps might be taken to reduce a worker's exposure. There will also be discussion on the approach of prevention through design.

Learning Objectives

At the completion of this activity, the learner will be able to:

  • Describe the approach of prevention through design

  • Recognize the occupational health hazards of drilling into concrete

  • Identify workplace interventions to reduce health hazards


Alan Barr received his undergraduate degree in the biomechanics track of the Exercise Science at UC Davis. Ever since completing that degree, almost 20 years ago, he’s been studying how the human body interacts with and responds to physical factors in the occupational world. For the last 17 years he has been employed as an engineer with the Division of Occupational and Environmental Medicine at UCSF and has been the primary engineer for the Ergonomics Graduate Training Program at UC Berkeley. He spent the last 13 years collaborating on research related directly to health and safety issues surrounding the use of hand-operated drills as they are used in concrete drilling. He has designed and built many prototypes to be formally studied as effective interventions in mitigating potentially harmful effects associated with traditional drilling methods. His true passion is raising his three daughters.


Certificates of Completion are available to learners who attend the live presentation, complete an online evaluation, and have an attentiveness score of 85% or higher throughout the duration of the presentation. Qualified learners will receive a Certificate of Completion as a PDF via email within one week of completing the evaluation.


Check out our 2019 Webinars page for more information on how attentiveness scores are calculated. 

The Center for Occupational and Environmental Health designates this activity for a maximum of 1.0 Contact Hours. Participants should claim only the credit commensurate with the extent of their participation.

Continuing Education Program (BRN Provider # 12983) has approved this webinar for 1.0 contact hours.