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Design Of Road Pavements Designing Of Road Pavement Linking Federal Secretariat Industrial Centre
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1.6.1 CHAIN SURVEY
The
method adopted in marking linear measurement is the linear measurement
in which a employed in making a direct measurement is dependent of the
degree of accuracy required. However in cause of this project, accuracy
in measurement was maintained to a moderate level. Obstacle such as
rough ground, pedestrian traffic and motor cycle traffic were avoided as
much as possible.
1.6.2 STATION MARKING
The survey stations were marked in such way that will fulfill the following requirement.
a. The stations where to be easily and quickly found during survey operations.
b. They were to be fairly permanent so that pedestrians will not easily remove them.
c.
They were marked using bottle tops and nails at the center line of the
road for easy location of these stations, temporary stations were
established at the edge of the road using wooden pegs.
1.7 FACTORS AFFECTING THE CHOICE OF STATION
These factors include the following
1. Easy meaning condition: stations are to be chosen in such a way as to avoid obstructs during draining or tapping exercise.
2.
Inter-visibility: stations are to be chosen and placed in such a manner
that no station on struts the line of sight of another stations. This
was considered for both traversing and leveling.
3. Traversing at
close distance should be avoided in order to avoid angular errors being
introduced if targets at short range are not properly bisected.
CHAPTER ONE -- [Total Page(s) 3]
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ABSRACT - [ Total Page(s): 1 ]This thesis on a project undertaken by the author is aimed at providing explanation of the basic theory of the work of road design and its associated activities also, to cover practical methods of working.In pursuit of the meaningful completion this project a lot of investigation was embarked with principles and practice of road construction. The total distance of route was determined and stations established bearing in mind the intervisibility of the stations.Leveling was carried out to obtain ... Continue reading---
