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27 Cards in this Set
- Front
- Back
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What is the information needed in Site Analysis?
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topography(slope), hydrology(drainage patterns), soils, vegetation, unique features
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What are data sources for topography?
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topographic maps and digital topographic data
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What is topographic maps?
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Plain view(bird's eye view/ top view) with no distortion
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What is digital topographic data?
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used in geographic information systems (GIS)
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List elements of a topographic map.
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orientation, legend, scale,contour lines, spot elevations/benchmarks, base map(including projection/coordinates)
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What are examples of a base map?
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roads and streets, water bodies(rivers, lakes, coastline), community and unique features, and vegetation(maybe)
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What are the 2 types of map scale?
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large-scale vs small scale maps
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What is an example of map orientation?
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North Arrow
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Four types of expression for a map scale are.......
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architects scale, engineering scale, bar graphic scale, and representative fraction
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What does architects scale show?
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shows fractions based on ruler (1/4", 1/2", etc)
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Engineering scale is .....
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multiples of ten(50',100',200', etc)
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Bar graphic scale shows...
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map-ground relations on a graph
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Representative fraction is ...
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a simple fraction or ratio (example 1- 24,000)
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What are the basic characteristics of contour lines?
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contour lines NEVER cross each other, darker lines, lighter lines, and site plans
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Darker contour lines are...
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index contour (usually even number or every 5th line)
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Lighter contour lines are ..
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secondary lines (they have no labels)
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Site plans or landscaping architect drawings have...
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broken lines(existing contour lines) and solid lines(proposed contour lines). Both are in site plans only
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What are the 4 types of spacing for contour lines?
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closed space, widely spaced, evenly spaced, and unevenly spaced
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Closed spaced contour lines have _______ slope.
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steep
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Widely spaced contour lines have ______ steep.
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less
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Evenly spaced contour lines have ______ slope.
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uniform
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Unevenly spaced contour lines have _____ or _____ slope.
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convex , concave
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What are the 3 types of expression for slope gradients?
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ratio, percentage, and degree
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What are the 2 variables for slope gradients?
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rise and run
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Rise variable for slope gradients is...
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vertical distance
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The run variable for slope gradients is ....
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horizontal distance between 2 adjacent contour lines as measured with map scale(actual distance in feet)
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What is the formula (percentage) for slope gradients?
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RISE(feet)
GRADE=--------------- X 100% RUN(feet) |
