Term
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Definition
| a pair of glass skins separated by an air corridor; hot air is trapped or vented vertically within this area |
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Term
| the ____ ________ layer of glass is usually insulating. |
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Definition
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| the ___ _____ between the layers of glass acts as insulation against temperature extremes, winds, and sound. |
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Definition
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Term
| benefits of double skin systems: |
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Definition
1. thermal buffer: tempered air
2. ventialtion flue: venturi effect
3. acoustic buffer
4. architectural effect - depth |
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Term
| types of double skin systems: |
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Definition
1. box window
2. corridor facade
3. multi-story facade |
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Term
| oldest form of a two-layered facade; consists of a frame with inward-opening casements |
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Definition
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Term
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Definition
only form of construction that allows a double-skin with conventional rectangular (punched-window type) openings
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Term
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Definition
commonly used in twin-face facades; have fresh air and exhaust intakes on every floor allowing for maximum natural ventilation
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Term
| intermediate space between the two skins is closed at the level of each floor; air-intake and extract openings in the external facade layer should be situated near the floor and the ceiling |
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Definition
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Term
| intermediate space between the inner and outer layers is adjoined vertically and horizontally |
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Definition
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Term
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Definition
| ventilation of the intermediate space occurs via large openings near the ground floor and roof |
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Term
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Definition
1. waterproof membrane
2. a root barrier
3. a drainage layer/filter fabrics
4. growing medium to support a variety of plants, grasses and shrubs |
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Term
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Definition
1. mitigates urban heat island effect
2. habitat: humans, animals, plants
3. air quality: reduces smog and dust
4. stormwater: reduces peak flow and runoff
5. roof quality: life expectancy and thermal
6. mitigates sound: db reduction inside |
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Term
| types (depth) of green roofs: |
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Definition
1. extensive: less than 6"
2. semi-intensive: around 6" (+/- 25%)
3. intensive: at or above 6-12" |
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Term
| green roofs reduce what throughout the city? |
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Definition
| dust and particulate matter distribution |
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Term
| green roof energy calculator |
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Definition
| allows you to compare the annual energy performance of a building with a vegetative green roof to the same building with either a conventional roof or a highly reflective roof |
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Term
70-90% of precipitation retained in the summer
25-40% of precipitation retained in the winter
water temp. is moderated and green roofs act as natural filters for any water runoff |
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Definition
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Term
| rules for green roofs (from lechner 11.10) |
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Definition
1. use only quality green roof systems to prevent water damage
2. account for the higher dead load (deep soil pockets for trees should be placed near vertical supports and not near the middle of long spans)
3. use the same amount of insulation as if the roof were not green
4. consider making the green roof an accessible roof garden |
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