Day of Glass

A Day in the Life of Glass Darren Cattle Construction V

Why Glass?

Illuminance

National Grand Theatre China Paul Andreu. Beijing, China

Why Glass?

Views

Sears Tower Glass Balcony Skidmore, Owings and Merill. Chicago, USA

Why Glass?

Reflectivity/Structure

Basque Health Department Headquarters Coll-Barreu Arquitectos. Bilbao, Spain

History of Glass Pre Industrial Revolution

Glass Infographic http://visual.ly/history-glass

History of Glass Post Industrial Revolution

Glass Infographic http://visual.ly/history-glass

History of Glass Unclear Glass

4th Century Cage Cup Roman Empire

History of Glass Stained Glass

Cathedrale Notre-Dame de Chartres 12th Century. Chartres, France

History of Glass Clear Glass (Lead Oxide)

16th Century Crystal Glassware George Ravenscroft

Types of Glass Mixtures 1. Silica Glass

Mainly containing silica (main ingredient of glass)

Weather and temperature resistant 2. Window Glass

Mixed with Sodium Oxide (14%) + Lime (10%)

Poor heat resistance, easy to form and transparent 3. Pyrex type Glass

Main admixture of boric oxide (12%)

Low thermal expansion, good for bottles/cookware 4. Crystal Glass

Lead Oxide (25%) Very high mixture percentage

High refractive index, high elasticity (resonance) 5. Aluminosilicate Glass

Alumina (16%) and Magnesia (7%)

Fiberglass composition, higher strengths typically mixed with plastics 6. Oxide Glass

Alumina (90%) and Oxide (10%)

Extremely clear glass, does not contain silica, mainly used for special fibers

Mechanics of Glass Typing of Glass

Chemical Additives http://en.wikipedia.org/wiki/Glass

Important Variables in Window Glass 1. U-Value

U-Value represents the heat loss due to conduction and convection.

Low U-Values are preferred for windows as they are the biggest source of heat

loss through convection and conduction.

2. Solar Heat Gain Coefficient (SHGC)

SHGC is a ratio between 0 and 1 that represents the amount of solar gain.

The higher solar gains, the more radiation energy a space gains. This is

preferable in winter time and passively heated buildings.

3. Visual Transmittance (VT)

Visual Transmittance is another ratio between 0 and 1. This ratio represents

the amount of light that is being allowed through the window opening.

Notes: With these 3 values, the most important factors of a window are determined. Things such as tint or double glazing are used specifically to change these values.

Mechanics of Glass Glass Variables

Windowed Glass http://www.wbdg.org/resources/windows.php

Glass Projects Envelope Driven

Hespeler Library by Kongats Architects Hespeler, Canada

Glass Projects Transformative/Active/Temporal

Tunnel of Light by Kristin Jarmund Metro Station. Nydalen, Oslo

Glass Projects Non-Traditional / Art

The Louvre by I. M. Pei Louvre Palace, Paris

Glass Projects Progressive

Glass Office SOHO China by AIM Architects Shanghai, China

Thanks for viewing.

Stay glassy.