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SUBJECT
In liner measurements,we details discuss about procedure in chain surveying,basic definition of chain surveying- main station, tie station, main survey line, tie line/ subsidiary line, base line, check line/ proof line, offset, chainage, well conditioned triangle.Correction in chaining,limiting length of offsets.
In fundamentals of surveying (part-2), we details analysis about plan & map, scale, representation of scale- engineer’s scale, representation fraction (rf), graphical scale. Shrinkage factor or shrinkage ratio, error due to shrinkage of map, error due to wrong measuring scale, type of scales- plane scale, diagonal scale, vernier scale (direct vernier, retrograde vernier, extended vernier, double vernier).
In fundamentals of surveying (part-1), we details analysis about surveying, classification of survey, principal of surveying, instruments used for various types of measurement.Etc
Design of Vertical Alignment Generally Highway is aligned to follow the natural topography keeping in view the drainage and other design consideration. Note: This topic