urgent solution needed - A contractor wants to design a flexible pavement which has a 4-inch...
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...
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...
(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...
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...
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...
LABORATORY #11 QUESTIONS Do not attach this to your homework. I already have a copy of the questions! 1. You have just performed a CBR test on subgrade so 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 carry 1000 18-kip single ade loads (ESALs) per day. The subgrade soil has a CBR of 6...
A highway has the following pavement design traffic: Daily Count. 400 (single axle) 150 (single axle) 100 (single axle) 100(tandem axle) 30 (single axle) 100 (triple (axle) Axle Load 10,0000 lb (44.5 kN) 18,000 lb (80.1 kN) 23,000 lb (102.3 kN) 32,000 lb (142.3 kN) 32,000 lb (142.3 kN) 40,000 lb (177.9 KN) A flexible pavement is designed to have 4 in. (10.16 cm)of sand-mix asphalt wearing surface, 6 in. (15.24 cm)of soil-cement base, and 7 in. (17.78 cm) of...