1
DESIGN OF FLEXIBLE PAVEMENT(Cantt by Pass Nawan Kili and Khalid Aviation Base Terminating at Kach    Road After Kili Nasra...
OUTLINE Introduction Laboratory Tests Design of Pavement Conclusion & References                           3
INTRODUCTION• Our project is flexible pavement design that  is cantt bypass nawan killi and Khalid air  base after killi N...
FOLLOWING DESIGN FEATURES       HAVE BEEN ADOPTED• Formation width = 24 ft• Carriage way = 12 ft• Shoulder each side = 6 f...
PAVEMENT LAYERS THICKNESS• Earth work = As per survey sheet• Sub base = 6” Compacted             9” Lose• Base Course = 6”...
DRAINAGE• Drainage is the one of the main factor  contributing the performance of the road, as  many road failures occur b...
ESTIMATION             8
LABORATORY TESTS• Atterberg Limit :• Atterberg limit are the basic measure of the  nature of fine-grained soil, depanding ...
LIQUID LIMIT               10
11
PLASTIC LIMIT• Plastic limit is defined as the moisture content  where the threads breaks apart at a diameter  of 3mm (1/8...
PLASTIC LIMIT:                 13
PLASTICITY INDEX                   14
PROCTER TEST• To determined the compaction properties of  the soil•    The object of experiment is to determined    the re...
DRY DENSITY (ƿ)FOR THE DETERMINATION OF MAXIMUM DRY DENSITY ANDOPTIMUM MOISTURE CONTENT WE USE THE MODIFIED AASHTOCOMPACTI...
WATER CONTENT (W)                    17
RELATIONSHIP BETWEEN DRY DENSITY ANDWATER CONTENT                                       18
CBR TEST• Soil subgrade sample was obtained from the project site and the CBR test  was conducted at field density. The fo...
THE PLOT IS MADE BETWEEN LOAD IN KG VERSUS PENETRATION OF PLUNGER FORTHE TEST DATA OBTAINED FOR SOIL SUB-GRADE AS GIVEN IN...
PAVEMENT DESIGN BY CBR METHOD• To measure the strength of road and pavement sub grade .• It is most widely used for flexib...
PAVEMENT DESIGN BY CBR METHOD•   Adopt CBR value = 4.0 percent.•    The result obtained by the test are used with the impe...
DESIGN OF LAYERS THICKNESS                             23
DESIGN OF PAVEMENT BY GROUPINDEX METHOD• G.I = (F 200-32 ) [0.2 +.005 (LL – 40 )] +0.01 ( F200 – 15 ) ( p.I  -10 )    G.I ...
THICKNESS OF LAYERS• 1 - Thickness of Sub-base = 15 cm (6 inches)• 2 - Combine thickness of Surface , Base & Sub- base  Co...
PROPOSED CROSS SECTION                         26
CONCLUSION:• After completion of the propose project following  people will be benefited to approach the city and  Hanna v...
• The geometry road has been improved by removing  the sharp curve and sight distance has been  improved to facilitate the...
• This project has been undertaken as an integral part  of our  Civil Engineering Program.                      References...
Thanks         30
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Civil Engineering

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Civil Engineering

  1. 1. 1
  2. 2. DESIGN OF FLEXIBLE PAVEMENT(Cantt by Pass Nawan Kili and Khalid Aviation Base Terminating at Kach Road After Kili Nasran 4 km) 2
  3. 3. OUTLINE Introduction Laboratory Tests Design of Pavement Conclusion & References 3
  4. 4. INTRODUCTION• Our project is flexible pavement design that is cantt bypass nawan killi and Khalid air base after killi Nasran link road Quetta (Balochistan)• Which is about 4 KM 4
  5. 5. FOLLOWING DESIGN FEATURES HAVE BEEN ADOPTED• Formation width = 24 ft• Carriage way = 12 ft• Shoulder each side = 6 ft• Premix or surfacing course = 2 in thick 5
  6. 6. PAVEMENT LAYERS THICKNESS• Earth work = As per survey sheet• Sub base = 6” Compacted 9” Lose• Base Course = 6” Compacted 9” Lose• Premix Carpeting = 2 in OR 2.5 in Thick• Structure Work = As per Survey Sheet 6
  7. 7. DRAINAGE• Drainage is the one of the main factor contributing the performance of the road, as many road failures occur because of inadequate drainage.• There are two types of drainage 1) Surface drainage 2) Sub-Surface drainage• We have provided drains to avoid the failure due to drainage 7
  8. 8. ESTIMATION 8
  9. 9. LABORATORY TESTS• Atterberg Limit :• Atterberg limit are the basic measure of the nature of fine-grained soil, depanding upon the water content of the soil.• The atterberg limit can be used to distinguish b/w silt and clay Liquid Limit 9
  10. 10. LIQUID LIMIT 10
  11. 11. 11
  12. 12. PLASTIC LIMIT• Plastic limit is defined as the moisture content where the threads breaks apart at a diameter of 3mm (1/8”) 12
  13. 13. PLASTIC LIMIT: 13
  14. 14. PLASTICITY INDEX 14
  15. 15. PROCTER TEST• To determined the compaction properties of the soil• The object of experiment is to determined the relationship between water content (w) and Dry density (γD) of the soil. 15
  16. 16. DRY DENSITY (ƿ)FOR THE DETERMINATION OF MAXIMUM DRY DENSITY ANDOPTIMUM MOISTURE CONTENT WE USE THE MODIFIED AASHTOCOMPACTION METHOD 16
  17. 17. WATER CONTENT (W) 17
  18. 18. RELATIONSHIP BETWEEN DRY DENSITY ANDWATER CONTENT 18
  19. 19. CBR TEST• Soil subgrade sample was obtained from the project site and the CBR test was conducted at field density. The following were the results: CBR value of soil sub-grade 19
  20. 20. THE PLOT IS MADE BETWEEN LOAD IN KG VERSUS PENETRATION OF PLUNGER FORTHE TEST DATA OBTAINED FOR SOIL SUB-GRADE AS GIVEN IN FIGURE BELOW . LOADSAT 2.5 AND 5 MM PENETRATION ARE 55 AND 78 KG RESPECTIVELY. 20
  21. 21. PAVEMENT DESIGN BY CBR METHOD• To measure the strength of road and pavement sub grade .• It is most widely used for flexible pavement CBR value Sub grade strength 3% & Less poor 3% — 5% Normal 5% —15% Good 21
  22. 22. PAVEMENT DESIGN BY CBR METHOD• Adopt CBR value = 4.0 percent.• The result obtained by the test are used with the imperial curve to determined the thickness of pavement layers 22
  23. 23. DESIGN OF LAYERS THICKNESS 23
  24. 24. DESIGN OF PAVEMENT BY GROUPINDEX METHOD• G.I = (F 200-32 ) [0.2 +.005 (LL – 40 )] +0.01 ( F200 – 15 ) ( p.I -10 ) G.I = 6 24
  25. 25. THICKNESS OF LAYERS• 1 - Thickness of Sub-base = 15 cm (6 inches)• 2 - Combine thickness of Surface , Base & Sub- base Course = 36 cm• 3 - Thickness of Base & Surface Course =36 – 15 = 21 cm (8 inches)• Now• Thickness of Sub base Layer = 6 inches• Thickness of Base Layer = 6 inches• Thickness of Surface Layer = 2 inches 25
  26. 26. PROPOSED CROSS SECTION 26
  27. 27. CONCLUSION:• After completion of the propose project following people will be benefited to approach the city and Hanna valley, . Tourist . Inhabitant of Quetta city . Beneficiaries of Hanna Urak as presently the existing road is in full deplorable condition and it need to be black topped on priority basis. 27
  28. 28. • The geometry road has been improved by removing the sharp curve and sight distance has been improved to facilitate the drivers• Previously the drains were provided at the sides of the roads and were not properly constructed, due to which many problems were encountered such as . Erosion . Water logging . Bad smell due to stagnant water• Footpath are provided to facilitate the pedestrians.• At every 500 meter a service chamber is provided for utilities 28
  29. 29. • This project has been undertaken as an integral part of our Civil Engineering Program. References• AASHTO manual. A policy on Flexible pavement design of Highway• www.wikipedia.org• Highway Engineering by S.K.Khanna & C.E.G Justo 29
  30. 30. Thanks 30

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