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28.02.2019, 15:44

Solving Tile Anchoring at Frederick Douglas Academy VI

Company News, Architecture, EMEA, Americas, APAC

CINTEC North America overcame a technical challenge presented by ageing terracotta tiling at the Frederick Douglas Academy VI High School in Queens, New York.

 

The Property

Frederick Douglass Academy VI (also known as FDA), is a co-educational public school for grades 6-12 located in Queens, New York City. In 1991, Dr. Lorraine Monroe founded the Frederick Douglass Academy, a public school in Harlem, in the belief that caring instructors, a disciplined but creative environment, and a refusal to accept mediocrity could transform the lives of inner-city kids. Based on the success of Monroe’s original model, the New York City school system created seven other “Frederick Douglass Academies” around the city.

 

The Problem

When the authority realised that backup for the proposed face brick replacement was Speed Tile there was concern about an effective anchor that was still sympathetic to the fragility of the Speed Tile Units. After an exhaustive search and realizing that the Cintec anchor, which is composed of a structural member surrounded by a sock, in this case oversized, with a cementitious grout pumped into it, had already been specified for other similar conditions by the NYC SCA such as Handicapped Railings, again in Speed Tile, they specified Cintec. With the oversized bulb of cement on the back side/ internal part of the Speed Tile, due to the expanded distribution of load with the Cintec Anchor, the risk of failure or the Speed Tile wall was virtually eliminated. Since then, Sen Architects have specified Cintec on other schools where Speed Tile anchoring was required with full confidence. As these are school projects and the Cintec is cement, not resin based, the fact that the Cintec will not fail in a fire is an added bonus. A total of 2520 anchors were used on the project.

 

In a post-project report, Sen Architects commented:

‘‘Cintec has helped us in the past three projects. All of them have involved very difficult field conditions where we uncovered poorly installed Terracotta masonry back behind a face brick masonry façade. In two of the projects (Far Rockaway and PS45R) the face brick was being removed and replaced. Since the header courses were being cut, the new face brick had to be tied back to the existing back-up, for which the Contract called for H&B DW10 anchors with V Wire ties. Unfortunately, these ties needed a unique attachment due to the back-up being hollow Terra Cotta blocks. Cintec provided the necessary expertise and anchors, whereby the DW10 anchors were attached to the terra cotta blocks as per attached sketch.’’

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