Aerial Surveying

1
Aerial Surveying

• I. Clarification of terms
• Borrow pits v.s. waste bank
• Primary control, secondary control, and
  intermediate control points
• Small-scale mosaic v.s. scale model and
  scaled-down model
• Band route / mosaic band
• All but v.s all but as in At this stage of
  reconnaissance a small-scale mosaic will provide
  sufficient detail to enable elimination of all
  but a couple of possible bands.
• A couple of, several, a few, tens of, dozens of,
  scores of, hundreds of, thousands of, hundreds
  and thousands of, millions of, trillions of, (cf.
  tens of thousands)
• 1 Sunday, June 28, 2015

2
Aerial Surveying

• I. Clarification of terms
• 7. Preliminary location v.s. final location
• Specifications (also specs A detailed, exact
  statement of particulars, especially a statement
  prescribing materials, dimensions, and quality of
  work for something to be built, installed, or
  manufactured ??, ?????????????????????????????),
  codes (as in a traffic code), standards (as in
  The Standard of Basic Technical Terms of Waterway
  Engineering)
• Frost heave/ capillary action
• 2 Sunday, June 28, 2015

3
Aerial Surveying

• II. Functions of Aerial photographs
• Being used as visual aids in technical
  conferences and at public hearings
• Being used as valuable tools in seeking the most
  suitable topographic location for the highway
• Locating sand and gravel deposits, borrow pits,
  and rock areas suitable for quarrying
• Rating soil-bearing capacities as good, fair or
  poor
• Outlining soils as to their texture, and
  estimating the depths of organic deposits
• Classifying bedrock as to physical types and
  their relative depths below the surface
• Estimating depths of glacial drift and wind-blown
  material
• 3 Sunday, June 28, 2015

4
Aerial Surveying

• II. Functions of Aerial Photographs
• Estimating hydrological factors
• Delineating active and potential areas involving
  problems such as sink holes, slides, rock falls
  and frost heave
• Locating underground utilities placed by
  cut-and-cover methods
• Providing the most up-to-date information
  regarding current land use
• Locating important intermediate control points
• Cutting down the amount of soil survey field work
• III. Homework
• List at least five objectives of aerial
  photographs.
• Complete Exs. II V on page 15 in the textbook.
• 4 Sunday, June 28, 2015