Windows

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Prospect School in N.Y. Opens After Major Historic Renovation

BBS Architects, Landscape Architects & Engineers has completed an $18.1-million historic renovation and expansion of the 60,500-square-foot Prospect School in Hempstead, N.Y. More

2 Cooper Square
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2 Cooper Square

2012 Masonry Construction Project of the Year Awards Entry More

Restoration Tips from Building Restoration Specialties
American Bar Association Headquarters (2007)
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Capital Improvements

Masonry restoration projects preserve our nation's history. More

Expansion Joints for Windows
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Expansion Joints for Windows

In many buildings that have rows of closely spaced windows, it is almost... More

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Using expansion joints

I am working on the design of an eight-story medical center that has 14-foot floor-to-floor heights. The wall construction is brick veneer with steel stud backup. The windows are either individual punched openings or larger groups that span a width of 30-feet horizontally. The heads of the windows are located 8-feet above the floor line. There are continuous shelf angles at the floor lines throughout the building. To support the masonry of the windows, we used loose-laid lintels at the individual openings and suspended lintels at the wider openings. Are vertical expansion joints needed at both sides of the masonry at the areas where the lintels are hung since the masonry above the windows is supported by the floor above, whereas the masonry on either side is supported on the floor below? More

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Reasons for seals

Some architects provide a membrane or seal to isolate the masonry cavity from the jambs of windows. What is the purpose of the seal? Is it required by codes? More

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Installing flashing over arched windows

How do you install flashing at an arched opening over a window? This situation is a particular problem if the window is installed after the masonry work is completed. How can flashing be installed in this case? More

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Hanging window lintels

Our firm is designing a multi-story steel frame office building with brick masonry insulated cavity walls. The shelf angles are designed with horizontal expansion joints beneath them at each floor line, roughly 10 feet on center. The windows are a relatively wide 12 feet and we would like to hang the window lintels from the floor above.Can this plan create problems since the lintels will be attached to a different floor beam than the masonry on either side of the window? More

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