Cast iron pipe laying

① Based on laying work for cast iron pipes (straight pipes (6m), fittings, and bends). ② Includes pipe laying, position adjustment, and warning tape installation; excavation, backfilling, dewatering, surplus soil disposal, and foundation work for the pipeline are excluded. ③ Material cost of cast iron pipes is excluded.

- Pipe works are carried out under conditions affected by earthworks (excavation and restoration work, etc.); therefore, the following coefficients shall be applied in consideration of site construction conditions. Category Standard market unit price Labor ratio - Site where construction is performed under the impact of same-day excavation and restoration work - Case where continuous excavation is impossible due to traffic restrictions, temporary shoring, obstacles (buried objects, etc.), etc., so excavation, pipe laying, and jointing are carried out repeatedly in parallel 1.00 1.00 - Site where construction is performed under the impact of same-day excavation and restoration work 0.75 1.00 - Case where excavation work is carried out separately in advance and laying and jointing are continuously performed - Site where construction is performed without the impact of excavation and restoration work - Case where laying and jointing alone are performed in an open-cut section with preceding work (excavation work or foundation work) completed 0.50 1.00