Earthwork
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Transcript of Earthwork
![Page 1: Earthwork](https://reader034.fdocuments.us/reader034/viewer/2022052705/577cc7bb1a28aba711a1b0b3/html5/thumbnails/1.jpg)
EARTHWORK
EARTHWORK CROSS SECTIONSEARTHWORK VOLUMES
![Page 2: Earthwork](https://reader034.fdocuments.us/reader034/viewer/2022052705/577cc7bb1a28aba711a1b0b3/html5/thumbnails/2.jpg)
EARTHWORK CROSS SECTIONS
![Page 3: Earthwork](https://reader034.fdocuments.us/reader034/viewer/2022052705/577cc7bb1a28aba711a1b0b3/html5/thumbnails/3.jpg)
EARTHWORK CROSS SECTIONS
• Cut / Excavation wherever the existing ground is above the
constructed section
• Fill / Embankmentwherever the existing ground is below the
constructed section
![Page 4: Earthwork](https://reader034.fdocuments.us/reader034/viewer/2022052705/577cc7bb1a28aba711a1b0b3/html5/thumbnails/4.jpg)
EARTHWORK CROSS SECTIONS
• Catch PointsThe points at which the cut or fill slopes
intersect the ground
• Hinge PointsThe points at which the cut or fill slopes
intersect the nearly horizontal roadway surface
![Page 5: Earthwork](https://reader034.fdocuments.us/reader034/viewer/2022052705/577cc7bb1a28aba711a1b0b3/html5/thumbnails/5.jpg)
Example 1
The following are notes for an irregular cross section. Compute the cross-sectional area by dividing it into triangles and trapezoids. The roadway is 14 m wide and the side slopes are 1:2.
![Page 6: Earthwork](https://reader034.fdocuments.us/reader034/viewer/2022052705/577cc7bb1a28aba711a1b0b3/html5/thumbnails/6.jpg)
![Page 7: Earthwork](https://reader034.fdocuments.us/reader034/viewer/2022052705/577cc7bb1a28aba711a1b0b3/html5/thumbnails/7.jpg)
Solution
![Page 8: Earthwork](https://reader034.fdocuments.us/reader034/viewer/2022052705/577cc7bb1a28aba711a1b0b3/html5/thumbnails/8.jpg)
EARTHWORK VOLUMES
• AVERAGE END AREA METHOD
![Page 9: Earthwork](https://reader034.fdocuments.us/reader034/viewer/2022052705/577cc7bb1a28aba711a1b0b3/html5/thumbnails/9.jpg)
EARTHWORK VOLUMES
• Prismoidal formula
![Page 10: Earthwork](https://reader034.fdocuments.us/reader034/viewer/2022052705/577cc7bb1a28aba711a1b0b3/html5/thumbnails/10.jpg)
![Page 11: Earthwork](https://reader034.fdocuments.us/reader034/viewer/2022052705/577cc7bb1a28aba711a1b0b3/html5/thumbnails/11.jpg)
EARTHWORK VOLUMES
![Page 12: Earthwork](https://reader034.fdocuments.us/reader034/viewer/2022052705/577cc7bb1a28aba711a1b0b3/html5/thumbnails/12.jpg)
Example 2Given the end area below. Calculate the
volumes of cut and fill between sta. 351+ 00 and 352+50. If the material shrinks 12%, how much excess cut or fill is there?
StationEnd Areas(m^3)
Cut Fill
351+00 57.93
351+50 52.28
351+75 23.58
352+00 8.4 3.73
352+14 13.8
352+50 33.34