BARGE BOARD
On a gable roof or dormer, the trim which finishes the sloped sides of the rafters or overhang.
On a gable roof or dormer, the trim which finishes the sloped sides of the rafters or overhang.
see _alkali_
Usually the lowest story of a building, either partly or entirely below ground level.
That portion of a beam, truss, or other structural member which rests on the supports.
A wall that supports a vertical load.
Airborne particles that are living or originate from living organisms; i.e., culturable, non-culturable and dead
Any substance that is toxic or lethal to living organisms, such as a pesticide, herbicide, or fungicide.
Capable of being broken down into innocuous (harmless) products (water, carbon dioxide) by the action of enzymes
The deterioration of valuable materials due to biological activity. The agents of deterioration (vectors) may be insects, rodents or higher animals and plants.
A matrix of micro organisms, organic and inorganic materials that combine to create a layer or ?film? on a substrate.