Mechanical excavation/Common soil/5m or less

① Based on mechanical excavation work according to soil condition, depth, and working conditions. ② Classification by specification (working condition) shall be applied as follows. - Good: conditions where continuous excavation is possible and there is no work interference - Poor: conditions where continuous work is difficult and work interference occurs due to obstacles, temporary works, etc. - Special conditions: where the working space is narrow (pipeline/side ditch excavation, etc.) and work efficiency is significantly reduced ③ Mixed soil may be applied as follows. - Where cobbles, boulders, gravel, etc. are mixed so that it is difficult to fill the bucket fully, or where parallel use of a ripper, breaker, etc. is required ④ Excludes shoring, dewatering, and loading and hauling costs for off-site disposal of excavated soil. ⑤ The volume conversion factor is already reflected and applies to soil quantity in natural condition.

- Apply by multiplying the following coefficients according to groundwater occurrence. Category Standard market unit price Labor cost ratio Land 1.00 1.00 Groundwater 1.33 1.00