BASICS OF SURVEYING Ivy Tech Community College. Surveying Definition DEFINITION The art and science of making such measurements as are necessary to determine.

BASICS OFSURVEYING

Ivy Tech Community CollegeIvy Tech Community College

Surveying Definition

DEFINITIONThe art and science of making suchmeasurements as are necessary todetermine the relative position of pointsabove, on, or beneath the surface of theearth, or to establish such points in aspecified position

MAJOR SURVEYS TYPES Property surveys - Determine boundary

lines, location of property corners, acquisition of data to prepare land subdivisions

Route surveys - Designing and constructing engineering projects associated with transportation and communications

MAJOR SURVEYS TYPES Topographic surveys - Collect field data

to prepare topographic maps Hydrographic surveys - Map shorelines

of water bodies, chart bottom areas of streams, lakes, harbors, etc., measure flow of rivers, assess other issues related to navigation and water resources

Aerial surveys (photogrammetry) - Use photographs mounted in specially designed planes

MAJOR SURVEYS TYPES

Mine surveys Determine position of underground works

and surface mines, fix position and direction of tunnels and shafts, define surface boundaries

Construction surveys Performed during building of structure or

project to fix elevation.

SURVEY GEOGRAPHICREFERENCE – Page 810

Latitude (φ) Lines run east-west parallel to equatorMax angle 90°South latitudes are negative

Longitude (λ)Lines run north south, converge at poles 0° - GreenwichMeasured east and west - 80° max angleWest longitude negative

Measured in Deg, Min, Sec

DIRECTION Azimuth- clockwise

angle from north to Line. Contains an angle between 0 and 360 degrees. (Page 810)

Bearing – angle measured from north or south. Contains an angle between 0 and 90 degrees. (Page 811)

Traverse – Page 812

A traverse is a series of lines that each have a known length and are connected by known angles. Each traverse line is a course, and each point where courses intersect is a traverse station or station point. When traversing you start with a point of beginning (POB) and proceed to utilize a traverse type.

Contour – Page 823

Contour lines on a map show elevation. The markings on the contour lines use the same concept at markings on a ruler.

Heavy contour lines on a map are called INDEX CONTOURS. Index Contours usually have elevations labeled on them.

Lighter lines between the index contour lines are known as Intermediate Contours and they are usually not labeled with elevations on them.

You would need to count the number of Intermediate contour lines between the heavy contour lines to determine the elevation scale.

Cut and Fill Drawing – Page 828

When designing a road, highway or building site, portions of earth must be removed (cut) from hillsides that are too steep and added (filled) to valleys and low spots. The amount of cut and fill can be shown on the profile using contour lines.

Assignment # 9

Assignment # 9 is a site plan also known as a plot plan. Sites can show topography with contour lines or the numerical value of land elevations can be given at certain locations.

You will need to record the elevations at each corner of the property boundary and add this information to the drawing.

Assignment 9

Begin by copying the AutoCAD file named Contour_Map.dwg from the DESNResources drive to your locker.

You may add your Architectural C layout to this file. Use the layers defined in the original drawing. Draw the property boundaries described in the linked Plat Drawing,

starting at the point of beginning marked on the contour map. Label the property line bearings and distances. Using the contour lines determine the elevation at each corner of the

property boundary and add these to your drawing text. All text should be .125 high Century Gothic. Plot your drawing on your Architectural C layout at 1/64 inch = 1 foot

scale in color and hand it in.