Solve the following problems 1. Compute the CBR of the soil sample shown if the sample with the same surcharge imposed upon it is subjected to a penetration by a pinston plungger 1.95 inches in diameter. The CBR value of the standard crushed rock for 0.10 inch penetration is 1000 lb/in² and for the 0,20 inch penetration is 1500 lb/in². Penetration (in) 0.025 0.050 0.075 0.100 0.150 Load (lb) 705 1129 1422 1631 1896 crushed stone (sp.gr. 2.70) sand (sp. gr. 2.65) limestone dust (sp. gr. 2.70) asphalt cement (sp. gr. 1.01) 2. A 53.5 kN wheel load has a maximum pressure of 0.62 MPa. This pressure is to be uniformly distributed over the area of tire contact on the roadway. Assuming the subgrade pressure is not to exceed 0.14 MPa, determine the required thickness of flexible pavement structure, according to the principle of the cone pressure distribution. 3. A plant mix is composed of materials combined in the following proportions by weight 50% 39% Materials Sand Penetration (in) 0.200 0.300 0.400 0.500 Crushed Gravel Limestone Dust Asphalt Cement 5% 6% Load (lb) 2102 2359 The compacted mixture has a bulk sp. gr. of 2.36 after rolling. Determine the porosity of the compacted mixture. 4. An asphaltic concrete is made up the following materials proportion by weight as shown 45% crushed stone (sp. gr. 2.67) sand (sp. gr. 2.70) 44% stone dust (sp. gr. 2.60) 7% asphalt cement (sp. gr. 0.98) 4% Compute the weight of a 50 mm thick suface course in kg/m². 2574 2675 5. From the given data of a particular asphalt concrete pavement mixture, compute the percent voids, if the measured bulk specific gravity is 2.37 Specific Gravity 2.64 2.64 2.82 1.02 Percent of Weight 40.0 44.7 9.0 6.3
Solve the following problems 1. Compute the CBR of the soil sample shown if the sample with the same surcharge imposed upon it is subjected to a penetration by a pinston plungger 1.95 inches in diameter. The CBR value of the standard crushed rock for 0.10 inch penetration is 1000 lb/in² and for the 0,20 inch penetration is 1500 lb/in². Penetration (in) 0.025 0.050 0.075 0.100 0.150 Load (lb) 705 1129 1422 1631 1896 crushed stone (sp.gr. 2.70) sand (sp. gr. 2.65) limestone dust (sp. gr. 2.70) asphalt cement (sp. gr. 1.01) 2. A 53.5 kN wheel load has a maximum pressure of 0.62 MPa. This pressure is to be uniformly distributed over the area of tire contact on the roadway. Assuming the subgrade pressure is not to exceed 0.14 MPa, determine the required thickness of flexible pavement structure, according to the principle of the cone pressure distribution. 3. A plant mix is composed of materials combined in the following proportions by weight 50% 39% Materials Sand Penetration (in) 0.200 0.300 0.400 0.500 Crushed Gravel Limestone Dust Asphalt Cement 5% 6% Load (lb) 2102 2359 The compacted mixture has a bulk sp. gr. of 2.36 after rolling. Determine the porosity of the compacted mixture. 4. An asphaltic concrete is made up the following materials proportion by weight as shown 45% crushed stone (sp. gr. 2.67) sand (sp. gr. 2.70) 44% stone dust (sp. gr. 2.60) 7% asphalt cement (sp. gr. 0.98) 4% Compute the weight of a 50 mm thick suface course in kg/m². 2574 2675 5. From the given data of a particular asphalt concrete pavement mixture, compute the percent voids, if the measured bulk specific gravity is 2.37 Specific Gravity 2.64 2.64 2.82 1.02 Percent of Weight 40.0 44.7 9.0 6.3
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
100%
I need this now. Solve neatly. Thanks in advance!
Transcribed Image Text:Solve the following problems
1. Compute the CBR of the soil sample shown if the sample with the same surcharge imposed
upon it is subjected to a penetration by a pinston plungger 1.95 inches in diameter. The CBR
value of the standard crushed rock for 0.10 inch penetration is 1000 lb/in² and for the 0,20 inch
penetration is 1500 lb/in².
Penetration (in)
0.025
0.050
0.075
0.100
0.150
Load (lb)
705
1129
1422
1631
1896
limestone dust (sp. gr. 2.70)
asphalt cement (sp. gr. 1.01)
Penetration (in)
0.200
0.300
0.400
0.500
2. A 53.5 KN wheel load has a maximum pressure of 0.62 MPa. This pressure is to be uniformly
distributed over the area of tire contact on the roadway. Assuming the subgrade pressure is not to
exceed 0.14 MPa, determine the required thickness of flexible pavement structure, according to
the principle of the cone pressure distribution.
3. A plant mix is composed of materials combined in the following proportions by weight
crushed stone (sp.gr. 2.70)
sand (sp. gr. 2.65)
Materials
Sand
Crushed Gravel
Limestone Dust
Asphalt Cement
50%
39%
5%
6%
The compacted mixture has a bulk sp. gr. of 2.36 after rolling. Determine the porosity of the
compacted mixture.
Load (lb)
2102
2359
4. An asphaltic concrete is made up the following materials proportion by weight as shown
crushed stone (sp. gr. 2.67)
sand (sp. gr. 2.70)
stone dust (sp. gr. 2.60)
asphalt cement (sp. gr. 0.98)
Compute the weight of a 50 mm thick suface course in kg/m².
2574
2675
45%
44%
7%
4%
5. From the given data of a particular asphalt concrete pavement mixture, compute the percent
voids, if the measured bulk specific gravity is 2.37
Specific Gravity
2.64
2.64
2.82
1.02
Percent of Weight
40.0
44.7
9.0
6.3
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 1 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Fundamentals of Structural Analysis
Civil Engineering
ISBN:
9780073398006
Author:
Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:
McGraw-Hill Education
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning