| 1 | What is the installation elevation of this pipeline? | |
| 2 | Elevation of outdoor terrace: keep in line with the peripheral roads and sidewalk. | |
| 3 | The elevation of concrete surface layer shall be controlled with form height or lines snapped on the forms. | |
| 4 | The eigenperiods, for the most part, are influenced by the mean winds in the lowest three scale heights. | |
| 5 | To manufacture besides the installation elevation conforming to the design requirement, it is very important to guarantee the level of the two directions of the plane. |