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AR GH Man Unit 3

Arkansas Greenhouse Management Unit 3: Structures

TermDefinition
anchor support posts side posts providing the main structural support for a greenhouse that are spaced at regular intervals
cold frame an outside propagation structure consisting of a wooden or concrete block frame with heat supplied by solar radiation through a transparent covering
even span a basic style of greenhouse in which rafters are equal in length
glass a type of greenhouse covering; allows greatest light transmission; comes in grades; expensive
Gothic arch basic style of greenhouse with a pointed arch; trusses have been eliminated
hotbed an outside propagation structure similar to a cold frame except electric or hot water heat is used
polyethylene a petroleum-based flexible plastic used for many purposes; greenhouses can be covered with this
purlins run the length of the structure and are attached to each truss, adding more structural strength
quonset basic style of greenhouse with curved roof with or without sidewalls
ridge and furrow greenhouse greenhouse whose structure consists of a number of greenhouses connected along the length of the houses; creates a large interior space
rigid structured sheet a type of covering used in greenhouses commonly made of polycarbonate and acrylic; it is rigid and resistant to weathering
trusses composed of rafters, chords, and struts that support the roof
uneven spac basic style of greenhouse in which rafters are of unequal length
ventilators movable units of a greenhouse to allow for natural air flow (vents)
Created by: Kim Moody
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