'pipe roof' is a correct and usable phrase in written English.
You can use it in a descriptive context to refer to the roof of a structure which contains piping or drainpipes, for example: "The old building had a rusty metal pipe roof."
Fig. 7 Evolution of the breaching process a Wet spot at the downstream slope b Formation and growth of a piping hole c Pipe progression and enlargement d Pipe roof collapse e Final breach profile of the dam (Okeke et al. 2013).
The robots then staple the cables to the pipe roof.
The paper will elaborate on the selection of the construction method for traversing under Gongbei Port, on the basic principles of the pipe-roof and soil freezing underground excavation method, on the design of a long-distance and large sectional curved pipe roof, and the design of long-distance horizontal precise soil freezing curtain.
The pipe roof around the tunnel is made up of 36 steel pipes with a length of 257 m and diameter of 1620 mm at intervals of about 356 mm, and the soil freezing method is applied for sealing.
There are daunting technical challenges such as controlling the jacking precision of the long pipe roof group, guaranteeing the precise thickness of long horizontal soil freezing, controlling the ground surface deformation of the underground excavation section, etc.
It is shown that even with the 30 m advance pipe roof at the tunnel entrance, the apparent difference in stiffness between the retaining wall and the surrounding soil results in an obvious stress concentration at the spring of the secondary lining near the end of the retaining wall, due to the effect of highly asymmetrical stresses.
In contrast, well-defined piping holes were formed in dams composed of mixed materials with a higher piping tendency, as evident in dam mixes D and H, where the pipe roofs survived for a relatively longer time.
Finally, after choosing appropriate support systems, the large-diameter curved pipe roofing method with 1.5 m spacing between curved pipes is proposed.
In this study, sequential excavation method and large-diameter curved pipe roofing method are used and the numerical results of the two methods are compared.
The ancient, all-of-a-piece jumble of khaki fieldstone buildings, wooden shutters and half-pipe roof tiles is as spruced up as a resort these days, with no graffiti in sight or tumbled ruins or paving stones out of place.
Then you must factor in mortgage interest, insurance and taxes paid... and don't forget the cost of upkeep (fixing water heaters, pipes, roof, windows, floors, etc).
