Deloitte tower uses energy efficient glazing in quest for leed platinum certification _ glassonweb. com gas cost per trip

The Cadillac Fairview Corporation Limited, along with its major tenant Deloitte, has helped create the first, new, privately-owned and financed commercial office tower in more than 20 years to be built in the city of Montreal, Quebec. This marks the first step in a $2 billion multiyear plan to develop a prime sector of downtown Montreal creating a vibrant new neighborhood known as Quad Windsor. The tower is located next to the heritage-designated Windsor Station entertainment venue and connects directly to the Bell Centre, home of the Montreal Canadiens professional hockey team. This 560,000-squarefoot project provides premium office space and approximately 230 parking spots in a vibrant and very visible part of downtown Montreal.

This program tracks energy consumption, water usage and waste diversion in developments that the company


manages across Canada with the objective of progressive improvement each and every year. The challenge includes allowing plenty of natural daylight to reduce electric light usage while still efficiently keeping heat gain and loss under control. Other goals of the certification include sustainable site work, water conservation, indoor environmental quality, and sustainable use of materials and resources. Early in the planning phase, the architectural teams collaborated with glass and curtain wall fabricators to ensure the best possible selection of suitable products to optimize both the energy efficiency and the visual appeal of the building.

They ultimately settled on a curtain wall design using lightly tinted grey vision glass to allow abundant daylight to enter virtually the full width and over 80% of the height of the perimeter walls on all of the office floors, which also affords spectacular vistas of the city in every direction. Grey tinted windows offer a more reflective look from the outside of the building, while providing occupants of the building with a greater sense of transparency in the glass than darker tinted windows.

In order to control heat gain and loss, the glazing in the project is made up of dual pane insulatinsulating glass units (IGUs) with a low emissivity (low- E) grey colored coating on the inside surfaces. The glass supplier and fabricator of the IGUs was Multiver Ltée of Quebec. Fuel calculator road trip Throughout the planning and design process, they assisted the architects with performance calculations, color selection, and other support.

They recognized that the total performance of the glazing would be influenced not only by the glass itself but by the individual products that held the dual panes together, commonly referred to as glass spacers. Numerous independent tests and certification organizations have confirmed that selecting an inferior glass spacer results in the edges, as well as the center of the glass, performing poorly in terms of heat transfer. If the seal along the edge of the spacer does not hold up, then air and water vapor can seep into the glass space otherwise filled with an inert gas. Further, in cold climates like Montreal, condensation can form on the inside of the glass along the cold edges causing other problems for the building components nearby.

Together, the architects and Multiver researched and chose glass spacers manufactured by Technoform Glass Insulation (TGI) since they met their design criteria for both excellent energy efficiency and the ability to meet unique aesthetic requirements. • TGI®-Spacer is a unique hybrid spacer system incorporating a high-performance polymer and low conductivity stainless steel to provide minimal heat transfer, while maximizing protection against gas leakage and moisture penetration. • TGI®-Spacer’s straight sightline, light grey color and smooth matte finish complemented the desired overall appearance of the glazing and ultimately the whole building.

• To maintain a congruent aesthetic appearance throughout all glass units, Multiver also used the TGI®-Spacer in the spandrel glass panels they provided. Cost of gas heat vs electric Opaque spandrel glass is used in areas that do not require vision glass, such as the horizontal sections along the floor lines where concealing the structure and other building components are required. Multiver fabricated the IGUs for the Deloitte Tower in a variety of sizes and shapes to meet the building design, the largest unit being 96” x 140” (2.4384m x 3.556m). Price of natural gas per 1000 cubic feet Putting It All Together – The Curtain Wall System Epsylon is known as a leader in specialized high energy efficiency curtain walls making them ideal to meet the demands of the Deloitte Tower project.

They also conduct an evaluation of all their products in regard to LEED certification for materials and vetted all products for compliance with the LBC “Red List” of 14 potentially toxic substances. Generally, these systems are used on mid-rise to high-rise structures that are 20,000 square feet and up where there is high repetition, tight job site access, and high installation labor costs. These systems hold up over time better than others because each curtain wall panel is installed to be able to expand and contract independently from the supporting structure and retain its ability to be completely weather tight.

Traditional curtain wall systems use continuously gasketed aluminum pressure plates or caps that can conduct large amounts of heat in or out of the façade resulting in “thermal bridging”. Structurally glazed curtain wall systems consist of glass that is bonded or anchored back to a frame with engineered silicone sealant that can reduce or eliminate the thermal bridging along the joints between adjacent IGUs. There are less visual interruptions due to the lack of metal on the exterior, creating a seamless, continuous glass look. Cost of driving calculator usa This system creates a completely clean, flush exterior appearance with superior energy performance.

It can also be much more technically complex than a traditional system so the skill and quality control of the Epsylon team was heavily relied upon. The structural silicone glazed system selected was Epsylon Platinum Series 60.075 – 2S which is the highest performing curtain wall offered by Epsylon Concepts, Ltd. It is a pre-fabricated, unitized system, with structural silicone on 2 sides that allows multiple glazing types and materials to be combined into one ‘unit’ in a quality controlled shop environment. The TGI®-Spacer used in this project extends the colored polypropylene through an extended sidewall ensuring minimal opportunity for stainless steel peek through and overcoming this common quality control issue on structural silicone glazed units. The installed units then receive additional silicone and or EPDM gaskets on the exterior creating “stack joints” as the complete air and moisture barrier of the system allowing a weep at each floor.

The Deloitte Tower is a stunning example of design and functionality coming together beautifully by paying attention to the details of the glazing system. The collaborative effort of the owner, design team, fabricators, and installers created an environment that eliminates visual barriers offering a desirable and productive office setting.

All in all, with the goal of LEED Platinum, the Deloitte Tower will certainly be a jewel for the downtown Montreal area. How much does gas cost to drive cross country The TGI-Spacer played an appropriately subtle but very important role in seeing these results achieved. Multiver V.P. Gas chromatography mass spectrometry principle of Operations, Luc Cormier states “Our prebuild simulations clearly indicated that the TGI®-Spacer offered superior Ufactor, vapor barrier, site-line temperature and condensation resistance – exactly the rifght combination of quality, value and appearance for the tower project. Triple a gas cost calculator We asimply could not achieve this any other way.” The evaluation of adaptive facades presents a challenge because there is no established evaluation strategy to systematically reach this goal and many of the available façade performance evaluation tools have limited applicability for such advanced building facades.

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