Page 131 - GRIHA Manual Volume II - Introduction to National Rating System
P. 131
Glossary 123
GloSSARy
albedo: Albedo refers to the reflectance of a material. The higher the albedo of a material, the more
it reflects the radiation falling on its surface. For example, a material with an albedo of 0.5 would
reflect 50% of the total radiation falling on its surface.
anthropogenic: Anthropogenic means generated/caused through human activity.
colour rendering index: It is the ability of a light source to convey accurately a sample of eight
standard colours of various objects being lit, in comparison to a standard source with excellent
colour rendering that has the same colour temperature. It is measured on a scale of 0 to 100.
drip irrigation: Drip irrigation can help use water efficiently in meeting the irrigation requirements
of a landscape. An irrigation method involving small pipes placed at the base of plants delivering
water slowly to the plant roots. A well-designed drip irrigation system loses practically no water to
runoff, deep percolation or evaporation.
exotic/ornamental plants: The term is often used to describe plant species that have been, or
are being, introduced in to parts of the world other than their historical or documented range by
humans, often as ornamental plants.
landscape: The art of arranging or modifying the existing features of (an area of land, a highway,
and so on), to improve its appearance by planting trees, shrubs, or grass or altering the contours of
the ground.
lawn: A lawn is an area of recreational or amenity land planted with grass, and sometimes clover
and other plants, which are maintained at a low, even height. Lawns are a standard feature of
ornamental private and public gardens and landscapes in much of the world today.
lighting power density: This is a measure of the total electrical power used to provide lighting to
a particular area. It can be expressed as watts per square foot or watts per square metre.
luminous efficacy: It is the ratio of the total lumens emitted by a light source to the total lamp
power consumption, expressed as lumens per watt.
micro-irrigation systems: Micro-irrigation refers to low pressure irrigation systems that spray, mist,
sprinkle or drip. The term ‘micro-irrigation’ describes a family of irrigation systems that apply water
through small devices. These devices deliver water onto the soil surface very near the plant or below
GloSSARy
albedo: Albedo refers to the reflectance of a material. The higher the albedo of a material, the more
it reflects the radiation falling on its surface. For example, a material with an albedo of 0.5 would
reflect 50% of the total radiation falling on its surface.
anthropogenic: Anthropogenic means generated/caused through human activity.
colour rendering index: It is the ability of a light source to convey accurately a sample of eight
standard colours of various objects being lit, in comparison to a standard source with excellent
colour rendering that has the same colour temperature. It is measured on a scale of 0 to 100.
drip irrigation: Drip irrigation can help use water efficiently in meeting the irrigation requirements
of a landscape. An irrigation method involving small pipes placed at the base of plants delivering
water slowly to the plant roots. A well-designed drip irrigation system loses practically no water to
runoff, deep percolation or evaporation.
exotic/ornamental plants: The term is often used to describe plant species that have been, or
are being, introduced in to parts of the world other than their historical or documented range by
humans, often as ornamental plants.
landscape: The art of arranging or modifying the existing features of (an area of land, a highway,
and so on), to improve its appearance by planting trees, shrubs, or grass or altering the contours of
the ground.
lawn: A lawn is an area of recreational or amenity land planted with grass, and sometimes clover
and other plants, which are maintained at a low, even height. Lawns are a standard feature of
ornamental private and public gardens and landscapes in much of the world today.
lighting power density: This is a measure of the total electrical power used to provide lighting to
a particular area. It can be expressed as watts per square foot or watts per square metre.
luminous efficacy: It is the ratio of the total lumens emitted by a light source to the total lamp
power consumption, expressed as lumens per watt.
micro-irrigation systems: Micro-irrigation refers to low pressure irrigation systems that spray, mist,
sprinkle or drip. The term ‘micro-irrigation’ describes a family of irrigation systems that apply water
through small devices. These devices deliver water onto the soil surface very near the plant or below
