Glass blocks iso#

The William Lescaze House and Office at 211 East 48th Street in New York City, built in 1934, was the city's first house to use glass blocks as walls. If a masonry or steel frame exists, the maximum area of the wall can be 144 square feet (13.4 m 2), whereas the maximum area without a frame is 100 square feet (9.3 m 2). Glass block walls are constrained based on the framing in which they are set. Due to the hollow center, wall glass blocks do not have the load-bearing capacity of masonry bricks and therefore are utilized in curtain walls. The resulting glass blocks will have a partial vacuum at the hollow center. Hollow glass wall blocks are manufactured as two separate halves and, while the glass is still molten, the two pieces are pressed together and annealed. Glass blocks can provide light and serve as a decorative addition to an architectural structure, but hollow glass blocks are non load-bearing unless stated otherwise. K) and specialty double glazed windows with advanced frame and coatings(1.2 W/m².K, which is between triple glazed windows (1.8 W/m².There are newer glass blocks injected with argon gas and having a layer of low-emissivity glass between the halves, which increases the insulative (U) value to 1.5 W/m² Glass brick has an r value between 1.75 and 1.96, close to that of thermopane windows. Blocks fall within three classifications Class1, Class 2 and Class 3 with Class 1 being the highest and best rating with a maximum permissible deviation from designed size and rectangularity of 1 mm. The Standards allow for variation in sizes and production irregularity.

Glass blocks iso#

The International Standard is ISO TC 160/SG1.

Glass blocks in Europe are manufactured in accordance with the European Standard EN1052-2.

Glazes or inserts may also be added in order to create a desired private or decorative effect. Patterns can be pressed into either the inner void or the outside surface of the glass when it is cooling in order to provide differing effects. The texture and color of glass blocks can vary in order to provide a range of transparency.