Steps in a new project work
Ihe various steps in a new highway project may be summarised as given below
(i) Map Study: with the help of available topographic maps of the area.
(i1) ReconnaissanceSurvey: a general idea of a topography and other features, field
1dentification of soils and survey of construction materials, by an on-the-spot inspection of the site.
iii) Prelinminary Survey :Topographic details and soil survey along alternate
alignments, consideration of geometric design and other requirements of alignment preparation of plans and comparison of alternate routes; economic analysis and selection of final alignment. Typical plan, longitudinal section and cross section
drawing for the new alignment are shown in Fig. below
(iv) Location of Final Alignment: Transfer of the alignment from the drawings to the
ground by driving pegs along the centre line of finally chosen alignment; setting
out geometric design elements by location of tangent points, apex points, circular
and transition curves, elevation of centre line and superelevation details.
(v) Detailed Survey :Survey of the highway construction work for the preparation of
longitudinal and cross sections, computations of earth work quantities and other construction material and checking details of geometric design elements.
(vi) Materials Survey: Survey of construction materials, their collection and testing.
(vii) Design: Design details of embankment and cut slopes, foundation of embankments and bridges, and pavement layers.
(vii) Earth Work: Excavations for highway cutting and drainage system, construction of embankments.
(ix) Pavement Construction
Preparation of subgrade, construction of sub-base and Surface courses.
(x) Construction Controls Quality control tests during different stages of
constructions and check for finished road surface such as unevenness, camber,
superelevation and extra widening of pavements at curves.
