Homework Answers
Prob.1
CBR value is the ratio of the load carried by the soil at 2.5 mm or 0.1 inch of penetration to the load carried by the standard soil at the same.
Standard load is 1370 kgs, or 3030.33 lbs.
Ao CBR value = 480/3030.33 = 0.158 = 15.8%
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LABORATORY #11 QUESTIONS Do not attach this to your homework. I already have a copy of the questions! 1. You have just...
1. You have just performed a CBR test on a subgrade soil and found that a...
1. You have just performed a CBR test on a subgrade soil and found that a load of 480 lb was required to push the piston 0.1 in into the soil. What is the CBR for this soil? 2. You are designing an asphalt pavement to cary 1000 18-kip single axle loads (ESALs) per day. The subgrade soil has a CBR of 6 and the regional factor is 3.0 at the project location. The road will have 6 inches of...
1- (18%) An engineer wants to design a flexible pavement which has a 4-inch sand-mix asphalt...
1- (18%) An engineer wants to design a flexible pavement which has a 4-inch sand-mix asphalt wearing surface, 11-inch soil cement base, and a 11-inch crushed stone subbase. It is designed to withstand 400 22-kip single-axle loads and 800 34-kip tandem axle loads per day. The subgrade CBR is 8, the overall standard deviation is 0.45, the initial PSI is 4.2, and the final PSI is 2.5. What is the probability that this pavement will have a PSI above 2.5...
1- (18%) An engineer wants to design a flexible pavement which has a 4-inch sand-mix asphalt...
1- (18%) An engineer wants to design a flexible pavement which has a 4-inch sand-mix asphalt wearing surface, 11-inch soil cement base, and a 11-inch crushed stone subbase. It is designed to withstand 400 22-kip single-axle loads and 800 34-kip tandem axle loads per day. The subgrade CBR is 8, the overall standard deviation is 0.45, the initial PSI is 4.2, and the final PSI is 2.5. What is the probability that this pavement will have a PSI above 2.5...
1- (18%) An engineer wants to design a flexible pavement which has a 4-inch sand-mix asphalt...
1- (18%) An engineer wants to design a flexible pavement which has a 4-inch sand-mix asphalt wearing surface, 11-inch soil cement base, and a 11- inch crushed stone subbase. It is designed to withstand 400 22-kip single-axle loads and 800 34-kip tandem axle loads per day. The subgrade CBR is 8, the overall standard deviation is 0.45, the initial PSI is 4.2, and the final PSI is 2.5. What is the probability that this pavement will have a PSI above...
1- (18%) An engineer wants to design a flexible pavement which has a 4-inch sand-mix asphalt...
1- (18%) An engineer wants to design a flexible pavement which has a 4-inch sand-mix asphalt wearing surface, 11-inch soil cement base, and a 11-inch crushed stone subbase. It is designed to withstand 400 22-kip single-axle loads and 800 34-kip tandem axle loads per day. The subgrade CBR is 8, the overall standard deviation is 0.45, the initial PSI is 4.2, and the final PSI is 2.5. What is the probability that this pavement will have a PSI above 2.5...
urgent solution needed - A contractor wants to design a flexible pavement which has a 4-inch...
urgent solution needed
- A contractor wants to design a flexible pavement which has a 4-inch sand-mix asphalt wearing surface, 11-inch soil cement base, and a 11-inch crushed stone subbase. It is designed to withstand 400 22-kip single-axle loads and 800 34-kip tandem axle loads per day. The subgrade CBR is 8, the overall standard deviation is 0.45, the initial PSI is 4.2, and the final PSI is 2.5. What is the probability that this pavement will have a PSI...
(18%) An engineer wants to design a flexible pavement which has a 4-inch sand-mix asphalt wearing...
(18%) An engineer wants to design a flexible pavement which has a 4-inch sand-mix asphalt wearing surface, 11-inch soil cement base, and a 11-inch crushed stone subbase. It is designed to withstand 400 22-kip single-axle loads and 800 34-kip tandem axle loads per day. The subgrade CBR is 8, the overall standard deviation is 0.45, the initial PSI is 4.2, and the final PSI is 2.5. What is the probability that this pavement will have a PSI above 2.5 after...
(18%) An engineer wants to design a flexible pavement which has a 4-inch sand-mix asphalt wearing...
(18%) An engineer wants to design a flexible pavement which has a 4-inch sand-mix asphalt wearing surface, 11-inch soil cement base, and a 11-inch crushed stone subbase. It is designed to withstand 400 22-kip single-axle loads and 800 34-kip tandem axle loads per day. The subgrade CBR is 8, the overall standard deviation is 0.45, the initial PSI is 4.2, and the final PSI is 2.5. What is the probability that this pavement will have a PSI above 2.5 after...
A flexible pavement is to be designed to last 10 years. The initial PSI is 4.2...
A flexible pavement is to be designed to last 10 years. The initial PSI is 4.2 and the TSI (the final PSI) is determined to be 2.5. The subgrade has a soil resilient modulus of 15,000 lb/in2 . Reliability is 95% with an overall standard deviation of 0.35. For design, the daily car, pickup truck and light van traffic is 40,000 and the daily truck traffic consists of 1500 passes of single-unit trucks with two single axles and 325 passes...
LABORATORY #2 QUESTIONS Do not attach this sheet to your homework. I aready have a copy...
LABORATORY #2 QUESTIONS Do not attach this sheet to your homework. I aready have a copy 1. Calculate and report the bulk relative density. SSD relative density, apparent relative density. and absorption of the crushed limestone per ASTM C-127 Section 10. (Make sure to follow the rules specified in that section). 2. Calcuiate and report the bulk relative density. SSD relative density. apparent relative density, and absorption of the concrete sand per ASTM C-128 Section 11. (Make sure to follow...
1. You have just performed a CBR test on a subgrade soil and found that a load of 480 lb was required to push the piston 0.1 in into the soil. What is the CBR for this soil? 2. You are designing an asphalt pavement to cary 1000 18-kip single axle loads (ESALs) per day. The subgrade soil has a CBR of 6 and the regional factor is 3.0 at the project location. The road will have 6 inches of...
1- (18%) An engineer wants to design a flexible pavement which has a 4-inch sand-mix asphalt wearing surface, 11-inch soil cement base, and a 11-inch crushed stone subbase. It is designed to withstand 400 22-kip single-axle loads and 800 34-kip tandem axle loads per day. The subgrade CBR is 8, the overall standard deviation is 0.45, the initial PSI is 4.2, and the final PSI is 2.5. What is the probability that this pavement will have a PSI above 2.5...
1- (18%) An engineer wants to design a flexible pavement which has a 4-inch sand-mix asphalt wearing surface, 11-inch soil cement base, and a 11-inch crushed stone subbase. It is designed to withstand 400 22-kip single-axle loads and 800 34-kip tandem axle loads per day. The subgrade CBR is 8, the overall standard deviation is 0.45, the initial PSI is 4.2, and the final PSI is 2.5. What is the probability that this pavement will have a PSI above 2.5...
1- (18%) An engineer wants to design a flexible pavement which has a 4-inch sand-mix asphalt wearing surface, 11-inch soil cement base, and a 11-inch crushed stone subbase. It is designed to withstand 400 22-kip single-axle loads and 800 34-kip tandem axle loads per day. The subgrade CBR is 8, the overall standard deviation is 0.45, the initial PSI is 4.2, and the final PSI is 2.5. What is the probability that this pavement will have a PSI above 2.5...
urgent solution needed
- A contractor wants to design a flexible pavement which has a 4-inch sand-mix asphalt wearing surface, 11-inch soil cement base, and a 11-inch crushed stone subbase. It is designed to withstand 400 22-kip single-axle loads and 800 34-kip tandem axle loads per day. The subgrade CBR is 8, the overall standard deviation is 0.45, the initial PSI is 4.2, and the final PSI is 2.5. What is the probability that this pavement will have a PSI...
(18%) An engineer wants to design a flexible pavement which has a 4-inch sand-mix asphalt wearing surface, 11-inch soil cement base, and a 11-inch crushed stone subbase. It is designed to withstand 400 22-kip single-axle loads and 800 34-kip tandem axle loads per day. The subgrade CBR is 8, the overall standard deviation is 0.45, the initial PSI is 4.2, and the final PSI is 2.5. What is the probability that this pavement will have a PSI above 2.5 after...
(18%) An engineer wants to design a flexible pavement which has a 4-inch sand-mix asphalt wearing surface, 11-inch soil cement base, and a 11-inch crushed stone subbase. It is designed to withstand 400 22-kip single-axle loads and 800 34-kip tandem axle loads per day. The subgrade CBR is 8, the overall standard deviation is 0.45, the initial PSI is 4.2, and the final PSI is 2.5. What is the probability that this pavement will have a PSI above 2.5 after...
LABORATORY #2 QUESTIONS Do not attach this sheet to your homework. I aready have a copy 1. Calculate and report the bulk relative density. SSD relative density, apparent relative density. and absorption of the crushed limestone per ASTM C-127 Section 10. (Make sure to follow the rules specified in that section). 2. Calcuiate and report the bulk relative density. SSD relative density. apparent relative density, and absorption of the concrete sand per ASTM C-128 Section 11. (Make sure to follow...
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