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Building with Tilt-Up | Project Profiles

Grenville Mutual Insurance

TCA Tilt-Up Project Profile - Office Division

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The Grenville Mutual Insurance headquarters was constructed using insulated Thermomass tilt-up panels and was framed with a sloping structural steel roof. The architect's vision was to create soft, natural elevations that featured an embossed "forest" pattern, accented with natural hand-set stone. The interior open air courtyard carries the forest pattern inward, and allows the user a view of the unique form liner pattern from within the space.

The form liner was produced by Dayton Superior from a simple still image provided by the architect. Two interlocking patterns were generated to provide height and character to the form liner pattern. To add depth and shading, the panels were eventually painted with three soft tones.

Panel forming was challenged by thermal movement of the form liner, due to the changing Canadian spring temperatures and the welding of the plastic form liner sheets. Glues, heat guns, soldering irons, and various silicons were used to fuse the sheets together. Each had benefits and setbacks. In the end, a simple barbecue charcoal electric burner was the ideal tool to melt the sheets together.


Project Specifics

Project Wall Area
9,479 sq ft
(881 sq m)
Project Floor Area
18,000 sq ft
(1,672 sq m)
Project Footprint
22,000 sq ft
(2,044 sq m)
Tallest Panel
33 ft 3 in
(10.15 m)
Widest Panel
28 ft 11 in
(8.83 m)
Largest Panel
584 sq ft
(54.3 sq m)
Heaviest Panel
54,000 lbs
(24,494 kg)

Participating TCA Members

SiteCast Construction CorpSustaining Member icon
General contractor
Dayton Superior CorporationSustaining Member icon
Tilt-Up accessories
Meadow BurkeSustaining Member icon
Tilt-Up accessories
LJB Inc.Sustaining Member icon
Project engineer

About the TCA

Founded in 1986, the Tilt-Up Concrete Association (TCA) strives to improve the quality and acceptance of site-cast Tilt-Up construction, a method in which concrete wall panels are cast on-site and tilted into place. Tilt-Up construction is one of the fastest growing industries in the United States, combining the advantages of reasonable cost with low maintenance, durability, speed of construction and minimal capital investment. At least 10,000 buildings, enclosing more than 650 million square feet, are constructed each year using this construction method.

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