Anchor
In this case, an underground mechanical device that fixes a cable or wire firmly in place and resists the tension placed on the cable.
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Retractable
Able to be pulled inwards, towards a center, or folded into a storable size or shape.
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Wind Load
The pressure on fabric or a structure caused by winds of a certain stated speed
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Wind protection benefits
A well-designed wind-break will not be totally impermeable; but it will reduce the force of the wind, helping to maintain humidity and temperature; and keeping turbulence to a minimum in the sheltered zone – up to a distance of almost ten times the height of the structure.
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Sheltered zone
The lee (down-wind) zone of the windbreak. The level of sheltering depends on the aerodynamic porosity of the windbreak, the local topography, the height and the angle of the windbreak to the wind. In addition, the shelter becomes less with increasing distance away from the windbreak. Fabric porosity also affects the degree of turbulence in the sheltered zone.
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Angled Sides / Wind barriers
When wind hits a vertical barrier it is thrown vertically. An inclined barrier throws the wind up at an angle. This more gradual process gives a longer flatter protected area behind the windbreak.
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Fire Rating
Fire resistance in terms of Australian Standard 1530 for Textiles (T3).
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Vapour pressure difference
The weight per unit area of the vapour particles in the air.
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Air temperature profile
A record of the fluctuation of air temperature in the same location over a periodof time.
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PAR
Photosynthetically Active Radiation; approximately equivalent to visible light radiatio