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Traverse Surveying

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Introduction:

Traverse is a method in the field of surveying to establish control networks A traverse is developed by measuring the distance and angles between points that

found the boundary of a site

The main objective of this practical traverse will be the computation of area inside aclosed traverse

Apparatus:

1. Prismatic compass/ Level machine (level will be used here)2. Tape3. Ranging rod4. Arrow5.

Compass

Process:

Establish and mark stations that enclose the area to be calculated Consecutive stations should be mutually visible Connecting line between consecutive station forms the side of the closed traverse Find the North direction using trough compass at the first station Measure the bearing of the first station Measure and record the distance of all the sides of the traverse Measure and record the included angles between two sides of traverse Do necessary calculation and adjustment (closing error if any) Finally plot the traverse on paper with proper scale

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In the figure:

A, B, C, D and E are the stations AB, BC, CD, DE and ED are the sides of traverse ABCDEA Included angles are shown with red arc

Included angle of B

North

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Observation Table:

neLength

(ft)Inc.Angle

W.C.B

R.B.

Latitude Departure Corr. Latitude Corr. Departure

Station

To

Coord

NCorr.

SCorr.

ECorr.

WCorr.

N S E W Y

A 0

A-B B

B-C C

-D D

D-E E

-A A

um

difference

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Enclosed area of the traverse (by station coordinate):

Where n = number of station

A

D

E

Y

XO