In earthwork estimation, "lead" refers to the horizontal distance of transport and "lift" refers to the vertical height of lifting. Which statement is correct?
Choose the correct answer
Lead is always 30 m; lift is always 1.5 m
Lead and lift affect the rate of earth carriage; extra lead and lift beyond the standard lead (30 m) and lift (1.5 m) attract extra rate per unit distance/height in DSR
Lead increases cost; lift decreases cost
Lead and lift are irrelevant for manual labour
Correct Answer
B. Lead and lift affect the rate of earth carriage; extra lead and lift beyond the standard lead (30 m) and lift (1.5 m) attract extra rate per unit distance/height in DSR
Why is this the answer?
DSR (Delhi Schedule of Rates) classifies earthwork into standard lead (30 m) and standard lift (1.5 m). For additional lead beyond 30 m: extra rate per 50 m lead (in graduated slabs). For additional lift beyond 1.5 m: extra rate per 1.5 m lift. Both affect the total earthwork carriage cost in highways and irrigation projects.
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