Connecticut Chapter - International Concrete Repair Institute
Welcome to our Chapter
The Connecticut Chapter of ICRI prides itself on bringing to our industry some eight technical sessions each year. Our meetings are held the second Wednesday of the month at the North Haven Holiday Inn in North Haven
Stop by Often - both here and at our meetings
The food is good, the networking invaluable and the technical sessions will make both you and your firm more productive and more informed. Our group consists of Owners, Engineers, Architects, Restoration Contractors and Material Specialists for all phases of both Concrete and Masonry Restoration
February Meeting
"Mechanical Anchor Strength in Historic Masonry Materials"
Wednesday - February 15th, 2012
Holiday Inn, Exit 12, I-91, North Haven, Connecticut
Reception: 5:30 PM Dinner: 6:30 PM Presenter: 7:15 PM
The current lack of codes, guidelines or recommendations for pull-out and shear values of mechanical anchors in historic masonry materials leaves the design community to improvise the design and specification of these anchors. Guidelines available are most relevant to concrete and brick masonry. Although field-testing is employed for some projects, more commonly an arbitrary reduction of the ultimate yield values is used when designing these elements for use in natural stone. The creation of a standard or empirical design equation for these values is arduous because, unlike concrete and concrete masonry units, historic building stone units are not manufactured in a controlled environment, and their physical properties such as density and compressive strength vary from quarry to quarry and within quarry strata.
A testing program to evaluate two types of mechanical fasteners in both limestone and sandstone for pull-out and shear will be described in this course. The ultimate yield strength is correlated to both compressive strength and surface hardness of the sample stone. Stone quality was evaluated in situ using ultrasonic pulse velocity measurements. Pulse velocity is sensitive to stone density, stiffness, and flaws that may have a corresponding effect on anchor capacity. Development of a relationship between anchor capacity and stone characteristics, as measured using the ultrasonic pulse velocity approach, would permit classification of field-installed anchors requiring destructive pullout tests.
Presenter: Kelley Streeter, P.E. Structural Engineer - Vertical Access LLC
Kelly received her Bachelors in Science degree in Structural Engineering from Cornell University in 1997 where she began her association with Vertical Access. She received her Masters of Science in Structural Engineering with a concentration on nondestructive evaluation from the University of Colorado in 2002. Prior to graduate school, Kelly was employed as a structural engineer at Robert Silman Associates, P.C. where she worked on several historic structures including Frank Lloyd Wright's Taliesin and the Yonkers Trolley Barn. Additionally, Kelly has completed the RESTORE preservation program in New York
Professional Development:
Engineers Presentation qualifies for one PDH - Self-reporting
Architects One AIA Learning Unit
Registration:
CT ICRI Members: $40 --- Non-Members: $45 --- Students: $20
Payable at door to "ICRI - CT Chapter"