Fundamentals of Construction And Maintenance of Secondary Type Highways
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In our eReader you can find the full English version of the book. Read Fundamentals of Construction And Maintenance of Secondary Type Highways 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 Fundamentals of Construction And Maintenance of Secondary Type Highways
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On a flat subgrade or on one that has not been improved the trench may be formed by plowing the center of the road and moving the loose earth to each side by a grader. On an old road that has some crown, it is advisable to form shoulders by pulling the earth in from the side ditches with a grader. Following the completion of the trench, gravel may be placed as previously indicated.
Fig. 19. A poorly constructed gravel road.
Fig. 20. A good gravel road.
The gravel should be placed in layers of n...ot more than 4 to 6 inches in thickness with the larger pebbles and the coarse gravel confined to the bottom layer. The top layer should be well graded and should not contain any oversize pebbles. Each layer should be compacted separately. While it is not necessary to roll the gravel it is desirable if heavy traffic is to be turned on the road immediately after construction. Loose, dry gravel is objectionable to traffic and if the material is not well graded the large pebbles will work to the top.
What to read after Fundamentals of Construction And Maintenance of Secondary Type Highways?
You can find similar books in the "Read Also" column, or choose other free books by Charles Clinton Albright to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
On a flat subgrade or on one that has not been improved the trench may be formed by plowing the center of the road and moving the loose earth to each side by a grader. On an old road that has some crown, it is advisable to form shoulders by pulling the earth in from the side ditches with a grader. Following the completion of the trench, gravel may be placed as previously indicated.
Fig. 19. A poorly constructed gravel road.
Fig. 20. A good gravel road.
The gravel should be placed in layers of n...ot more than 4 to 6 inches in thickness with the larger pebbles and the coarse gravel confined to the bottom layer. The top layer should be well graded and should not contain any oversize pebbles. Each layer should be compacted separately. While it is not necessary to roll the gravel it is desirable if heavy traffic is to be turned on the road immediately after construction. Loose, dry gravel is objectionable to traffic and if the material is not well graded the large pebbles will work to the top.
What to read after Fundamentals of Construction And Maintenance of Secondary Type Highways?
You can find similar books in the "Read Also" column, or choose other free books by Charles Clinton Albright to read onlineMoreLess
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