Centrifugal reinforced concrete pipe / Socket type

① Based on socket-type jointing of centrifugal reinforced concrete pipe (2.5m). ② Includes pipe laying and jointing, cutting, and unloading of materials; excavation, backfilling, dewatering, surplus soil disposal, and foundation work for the pipeline are excluded. ③ Purchase and transportation costs of centrifugal reinforced concrete pipe and rubber rings are excluded, while the cost of consumable materials (joint mortar, etc.) is included.

- 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