Highway Engineering, Rural Roads And Pavements
Highway Engineering, Rural Roads And Pavements
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In our eReader you can find the full English version of the book. Read Highway Engineering, Rural Roads And Pavements Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Highway Engineering, Rural Roads And Pavements
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To quickly assess the difficulty of the text, read a short excerpt:
With the center height known the side stakes may be obtained by using a spirit level on the top of the board. If side grade stakes are set, the cen- ter and "intermediate stakes- can be quickly set, by sight rods, are shown in Fig. 40.
Rods are placed upright behind the stakes at M and N with the blocks D resting on their top. The " T '' is of con- stant height and the stake upon which it is held is driven until the line of sight from A io A' coincides with its top. Several notches are cut in t...he rods A, B, and C to facilitate setting intermediate stakes. The top is used for center stake, notches A for one-fourth distance-out; B, for one-half; and C for three- fourths. It is easier to sight these rods if the farthest one is painted white and the middle one a different color.
Side Ditches. — The water having been shed from the road surface by the crown must be further taken care of. For this purpose side-ditches parallel to the center line of the roadway are constructed. These must have sufficient longitudinal grade to allow the water to flow along them until a place is reached where the natural formation of the land will allow it to flow away from the right of way.
What to read after Highway Engineering, Rural Roads And Pavements?
You can find similar books in the "Read Also" column, or choose other free books by George Richard Chatburn to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
With the center height known the side stakes may be obtained by using a spirit level on the top of the board. If side grade stakes are set, the cen- ter and "intermediate stakes- can be quickly set, by sight rods, are shown in Fig. 40.
Rods are placed upright behind the stakes at M and N with the blocks D resting on their top. The " T '' is of con- stant height and the stake upon which it is held is driven until the line of sight from A io A' coincides with its top. Several notches are cut in t...he rods A, B, and C to facilitate setting intermediate stakes. The top is used for center stake, notches A for one-fourth distance-out; B, for one-half; and C for three- fourths. It is easier to sight these rods if the farthest one is painted white and the middle one a different color.
Side Ditches. — The water having been shed from the road surface by the crown must be further taken care of. For this purpose side-ditches parallel to the center line of the roadway are constructed. These must have sufficient longitudinal grade to allow the water to flow along them until a place is reached where the natural formation of the land will allow it to flow away from the right of way.
What to read after Highway Engineering, Rural Roads And Pavements?
You can find similar books in the "Read Also" column, or choose other free books by George Richard Chatburn to read onlineMoreLess
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