抄録
We examined the serviceability (replacement) of the pipes used in the construction method called Header-Conduit Piping System which is widely used for plumbing (cold & hot water) in complex housing. We used sample pipes that have been used in the field for about 15 years and sample pipes which we intentionally bent to simulate long-term service, so that we could study their serviceability under the actual design and construction conditions. As a result, it required two people to replace the pipes through a repeated push-pull method and the required force was rather large.
