Masonry Magazine September 2011 Page. 20
CONNECTORS, ANCHORS
AND FASTENERS
means of support above the windows. Due to the differential support conditions and the 10-story heights of unsupported veneer, widespread distress attributable to improper gravity support was observed including: diagonal brick cracking originating from the lintel ends, compressive failures within the second and third-floor terra cotta water tables, delaminated faces of the water table projecting elements, and bowed displacement of the veneer in excess of two inches.
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Various areas of the building would need to be taken down and rebuilt, particularly at the building's comers.
Structural and helical solution
TO RESTORE the Olympia's severely damaged sections back to a historic and maintainable condition, various areas of the building would need to be taken down and rebuilt, particularly at the building's corners. Additionally, due to the inadequate gravity support and subsequent damage, WJE recommend installing a support system for the exterior veneer. In seeking a solution to secure the existing masonry, while maintaining the aesthetic integrity of the historic building, WJE specified Helifix's Helibeam System. The system offered a non-invasive and sustainable solution comprised of HeliBars, HeliBond, DryFix remedial ties, and Crack Stitching.
The key focus of the Helibeam System was the implementation of stainless-steel (austenitic grade 304 or 316) HeliBars that were seven meters long to create a reinforced "beam" across each spandrel level to distribute and support the structural loads across the piers and into the steel lintels and spandrel beams.