| 21. | The viaduct has 92 spans, each with internal diameter of 7.2 m.
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| 22. | The cast-iron tunnel is long, deep and has an internal diameter of about.
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| 23. | The tower is a concrete structure with an internal diameter of and a wall thickness of.
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| 24. | In 1998, the three aqueducts were replaced with one large aqueduct with a internal diameter.
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| 25. | This compressive loading fuses the circumferential fissures and sets the initial internal diameter and OD values.
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| 26. | The combination reamer is precision ground into a pattern that resembles the part s multiple internal diameters.
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| 27. | The pumped storage power station consists of two circular concrete silos, each of about internal diameter.
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| 28. | Kiln size is typically long / internal diameter, with a rotation speed of around 1 rpm.
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| 29. | The circular domed auditorium is 55 meters high and its internal diameter is 46.33 meters.
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| 30. | At the base of the brick wall is a small drainpipe with an internal diameter of 50mm.
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