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HERITAGE & RESTORATION

We are pleased to have been involved in a wide array of heritage and restoration projects over the years. A sampling of our efforts to preserve can be found below:

Toronto Old City Hall - Photo Courtesy of Nicole Konrad, +VG Architects

Macdonell-Williamson House, Pointe-Fortune, Ontario

In this project, Quinn Dressel Associates was contracted to investigate the oldest of the three skylights in the Legislature, assumed to date to the building’s construction in the period from 1886 to 1893. The purpose of our involvement was to determine the structural failures that needed to be addressed, the requirement for such work as evidenced by cracking and other deterioration issues visible of the wood frame. Quinn Dressel Associates recommended the use of a temporary platform to better facilitate the review and restoration work. With our assistance, a detailed architectural survey of the skylight was carried out, subsequent design and detailing of replacement sections of the frame, and a re-design of the method of support. Repairs were then successfully implemented using the platform already in position.

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Stained Glass Panels - East Skylight Queen's  Park, Toronto

In this project, Quinn Dressel Associates was contracted to investigate the oldest of the three skylights in the Legislature, assumed to date to the building’s construction in the period from 1886 to 1893. The purpose of our involvement was to determine the structural failures that needed to be addressed, the requirement for such work as evidenced by cracking and other deterioration issues visible of the wood frame. Quinn Dressel Associates recommended the use of a temporary platform to better facilitate the review and restoration work. With our assistance, a detailed architectural survey of the skylight was carried out, subsequent design and detailing of replacement sections of the frame, and a re-design of the method of support. Repairs were then successfully implemented using the platform already in position.

Queens Park Complex - Hepburn, Ferguson and Macdonald Facade Repairs, Toronto

The Hepburn, Ferguson and Macdonald Buildings comprise three of the five buildings in the Provincial Government Building Complex located at Queen's Park in Toronto, Ontario.  Constructed between 1965 and 1969, the complex is highly regarded for its architectural and landscape design and considered a fine example of an institutional high-rise office building of the Modern Movement. Quinn Dressel Associates provided design services for the restoration of the Queenston limestone facades of the Hepburn and Ferguson Blocks (11 storeys and 13 storeys respectively), and also for some minor deterioration of the polished granite of the Macdonald Block (2 storeys). The restoration work was successful despite challenges that included the dwindling supply of quality Queenston limestone for heritage repair, and that the pointing mortar for all three buildings contained lead which required abatement.

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Queen's Park - Hepburn Block

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University of Toronto - Rosebrugh Building

University of Toronto: Rosebrugh, FitzGerald  and Lassonde Mining Buildings

Constructed in the early 20th century, these predominantly masonry buildings are part of the University of Toronto’s St. George Campus. Quinn Dressel Associates completed a detailed pre-construction condition survey and structural evaluation of these three buildings. Emphasis on the long-term history of masonry cracking in the Rosebrugh Building formed a major part of this undertaking; the complication of the underground Taddle Creek causing settlement issues, although beyond the scope of work, was investigated and recommendations made for solutions.

Toronto Old City Hall Phases I to IV

Toronto’s historically-significant Old City Hall building, constructed from 1891 to 1899, underwent extensive renovations under a repair program of four phases. Quinn Dressel Associates was involved in the structural elements of this rehabilitation work; repairs to the roof structure, stabilization of the dormer gables, and assistance in the replacement of deteriorated stonework, were all works within our scope. Prior to refurbishment of a portion of the copper roof, a detailed condition survey was carried out on the roof trusses and masonry supports affected by the anticipated roofing replacement program, to ascertain their condition with respect to deterioration and determine their capability of safely supporting the loads imposed on them during roof refurbishment construction and their service life. Quinn Dressel Associates also undertook the Justice of the Peace Office Suites project and the replacement of the gargoyles at Toronto Old City Hall. 

Toronto Old City Hall - Photo Courtesy of Nicole Konrad, +VG Architects

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Toronto Gospel Lighthouse

Constructed in two parts, circa 1906 and 1923, the Toronto Gospel Lighthouse is comprised of wooden roof trusses, posts, and beams, clad in wood planking and non-loadbearing brick. A risk assessment carried out by Quinn Dressel Associates revealed the roof trusses had failed, and were deflecting to such an extent that the overall structure was actually in a state of unstable equilibrium and required immediate remedial attention. The structural deficiencies noted in our report were remedied with our assistance, and included replacement of deteriorated timber columns in the nave walls.