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The upper stratum is the space above which ordinary use and enjoyment by the property owner is reasonable, and is loosely defined in the Section 76 Civil Aviation Act 1982 as starting between 500 and 1,000 feet (150 and 300 m) above the roof level of the property.
In aviation, the rule of three or "3:1 rule of descent" is a rule of thumb that 3 nautical miles (5.6 km) of travel should be allowed for every 1,000 feet (300 m) of descent. [1] [2] For example, a descent from flight level 350 would require approximately 35x3=105 nautical miles.
The lot and block survey system is a method used in the United States and Canada to locate and identify land, particularly for lots in densely populated metropolitan areas, suburban areas and exurbs. It is sometimes referred to as the recorded plat survey system or the recorded map survey system .
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That is, 7.92 units of distance are equivalent to 1 unit of climb. For convenience an 8 to 1 rule can be used. So, for example, if a route is 20 kilometres (12 mi) with 1600 metres of climb (as is the case on leg 1 of the Bob Graham Round , Keswick to Threlkeld), the equivalent flat distance of this route is 20+(1.6×8)=32.8 kilometres (20.4 mi).
This may be significantly higher than 500 feet or 1,000 feet. 500 ft rule An aircraft must maintain an altitude of 500 feet above the surface, except over open water or sparsely populated areas. In those cases, the aircraft may not be operated closer than 500 feet to any person, vessel, vehicle, or structure. 1000 ft rule
Lots can come in various sizes and shapes. To be considered a single lot, the land described as the "lot" must be contiguous. Two separate parcels are considered two lots, not one. Often a lot is sized for a single house or other building. Many lots are rectangular in shape, although other shapes are possible as long as the boundaries are well ...
The AMA is the lowest off-airway altitude to be used under instrument meteorological conditions (IMC) that will provide a minimum vertical clearance of 1,000 feet , or in designated mountainous terrain 2,000 feet above all obstacles located in the area specified, rounded up to the nearest 100 foot increment.