Describe the purpose of soil stabilization and discuss at east three methods of chieving soil stabilization. How does soil stabilization affect highway construction How is track modulus expressed? State the factors ffecting it and give the
Q: Consider the following data for a proposed highway project: At station 10+500, the cross-sectional…
A: This is the standard procedure to followed during the survey for highway construction. for better…
Q: A contactor has compacted the base course for a new road and found that the mean value of the test…
A: Has the contractor complied to with the specifications?(calculate void ratio e )
Q: A grassy drainage area is paved with asphalt. What happens to the time of concentration? 1.…
A: By paving the drainage area with asphalt, the time of concentration will decrease, since the water…
Q: Discuss slope stability ii). Discuss a recent major mass wasting event in PNG? iii). Discuss…
A: From the given question it is required to discuss the following- slope stability. a recent major…
Q: Determine the cost of total earthwork of a highway section having the cumulative volume shown in the…
A: Given - OVERHAUL COST - 650 ID/m3 BORROW COST - 2500 ID/m3 Free haul cost = 1250 ID/m3 FREE HAUL…
Q: A five story auditorium building (with occupant load of 300) in Calstate LA campus has a steel…
A:
Q: what are the significance of specific gravity and Blaine fineness tests
A: Specific gravity The correct definition of specific gravity (sg) is the ratio of a substance's…
Q: With the aid of a well-labeled diagram, describe the characteristics of soils of a slope gradient…
A: A soil catena is a series of distinct soil types that run downhill in a certain order. They are…
Q: Hydraulic fracturing may be used in groundwater hydrology when?
A: Brief concept- Hydraulic fracturing- Fracking, or hydraulic fracturing, is a well stimulation…
Q: What is percentage of gravel of soil A
A: Given,
Q: The sieve analysis data for a granular soil are given below. • % passing 76.2 mm sieve = 98 • %…
A: Look at % passing thorough 0.075 mm=16%<35% so GRANULAR MATERIA
Q: A slab has a dimension of 0.10 meter thick, 6 meters wide and 10 meters long, Considering the slab…
A: Volume = Length * Width * Height = 0.1 x 6 x 10 = 6m3 Determine the concrete mix…
Q: Discuss spatial slope stability
A: Introduction- “Since you have asked multiple questions, we will solve the first question for you. If…
Q: A highway embankment with a volume of 800,000 cy is being constructed by compacting dry gravel…
A:
Q: Workers are to enter an excavation to repair a damaged pipeline on a construction site. The soil in…
A: OSHA The abbreviation of OSHA is OCCUPATIONALSAFETY AND HEALTH ADMINISTRATION OSHA provides set of…
Q: Discuss highway drainage with neat sketches
A: The drainage is process of the removing the water from the place to another. Similarly the highway…
Q: a) Given the cross section data of a roadway below. Compute the area of each station and the cut…
A: Cut Length = 1 + 100 = 1100m Fill length = 1+040 = 1041m
Q: During concrete pavement inspection of link (3*10) slabs, from airfield section, 4 slabs medium, 12…
A:
Q: How can the dimension of a conveyance canal such as bottom width and depth be influenced by soils in…
A:
Q: A contractor has compacted the base course for a new road and found that the mean value of the test…
A: We will use formula for density.
Q: Describe the purpose of soil stabilization and discuss at least three methods of achieving soil…
A: Soil stabilization is a procedure in which special soil is proportioned/added or removed or some…
Q: Determine the total volume for excavation, concrete embedded, embankment and disposal. Inidicate…
A: All moments and forces acting at the base of the column must be transferred to the pedestal, if any…
Q: A contact radius of dual tires is 3.25 in with a total load of 1050o Ib, center to center spacing…
A: Given data- Total load = 10500 lb Contact radius of dual tires (d) = 3.25 inch Centre to center…
Q: Describe briefly how does obtaining samples of soil groundwater and soil gas relate to diagnosing…
A: Any result of soil erosion contamination of soil or soil depletion is generated by the introduction…
Q: Using the given data, design a road pavement for a 4-lane highway based on ATJ 5/85 (2013).…
A: Design of Road Pavement : A road pavement or a highway pavement is a structure which consists of…
Q: An earth embankment requires 2000 m of soil for construction at a target dry density of 17 kN/m.…
A:
Q: explain how soil stabilization affects highway construction.
A: The process of highway construction starts either with filling earthwork or excavation of soil.…
Q: A) Being an engineer, what is the role of soil mechanics in highways and bridges? Justify your…
A:
Q: The unevenness index calculated as per International Roughness Index is 3.054 m/km. Determine the…
A:
Q: Define Vehicle dynamic loads
A: The vehicle dynamic load caused the pavement deformation caused by dynamic load is larger than the…
Q: Determine the percentages of gravel, sand, silt, and clay according to the AASHTO System. 1. Gravel…
A: To Determine the percentages of gravel, sand, silt, and clay according to the AASHTO System.
Q: 1.What is soil compaction road construction? 2.What is Kind of soil compaction road construction?…
A:
Q: A 7000 meters long and 8 meters wide road is to be constructed in a remote region. Cut and fill are…
A: Excavation Volume of excavation = 0.8*10*3.5*1000= 28000 m3 Work done by Bulldozer in one day =…
Q: How is the compaction effort varied in the Marshall method and the Superpave method to account for…
A: we need to discuss the compaction efforts in the marshall method and Superpave method to account for…
Q: Estimate the time required (in hours) for a dragline to excavate material to be placed and compacted…
A:
Q: Relating to the use of geosynthetics on construction projects, briefly describe what is meant by (a)…
A: Geosynthetics can be defined as it is a synthetic product, which is used to support the terrain. It…
Q: a)As an engineer and based on information provided, you are required to identify the possible…
A: Slope Failure: Slopes are typically divided into two types: natural and man-made slopes. Natural…
Q: Briefly describe what is meant by (a) the separation function, (b) the filtration function, (c) the…
A: Given: To describe the (a) the separation function, (b) the filtration function, (c) the drainage…
Q: 1. A triangular channel has a vertex angle of 60° and is 2m deep. It has a roughness coefficient of…
A:
Q: Describe the techniques used for soil gas samples.
A:
Q: 1. For heavy traffic, which compaction test should be conducted on the subgrade? What is the reason…
A: Brief concept introduction- Compaction test- This test is done to determine the optimum water…
Q: A contractor has compacted the base course for a new road and found that the mean value of the test…
A:
Q: For the following highway pavement information find the performance period if pi = 4.5, pt = 2.5 and…
A: The given data is: Pi=4.5 Pt=2.5 Analysis period=30 yrs Calculating the ΔPSI: ΔPSI=Pi-Loss in PSI
Q: Please answer: How can you apply your knowledge in Erosion in Civil Engineering? (minimum 100 words)
A:
Q: The contractor having a problem with road construction when the relative compaction result shows…
A: Compaction is defined as the process of escape of water or compression of air from the soil voids…
Q: (b) The road embankment will be constructed on soft soil. Since the short-term stability is more…
A: Penetration Tests: The tests involve the measurement of the resistance to penetration of sampling…
Q: . Briefly describe the following: - 1. Under what conditions would you prefer borrowing new material…
A: for highways embankment maximum dry density depends upon following factors 1.void ratio 2.…
Q: Give one or two possible identifications for each of the following. Provide a group symbol and…
A: Solution to the given scenario:The size of the gravel is larger and the size which is greater than 2…
Q: Define the Correlation between N60 and Relative Densityof Granular Soil ?
A: The uncorrected N value for a safety hammer (cathead and rope) is thought to be N60. An auto hammer…
Step by step
Solved in 3 steps
- (b) The road embankment will be constructed on soft soil. Since the short-term stabilityis more critical than the long-term stability, you, as a geotechnical engineer, arerequired to propose and discuss the related laboratory testing to be performed inorder to analyse the short-term stability of road embankments ?Define the Correlation between N60 and Relative Densityof Granular Soil ?describe the main differences between short term and long term stability analysis jn soil mechanics. why is it important to consider both types of analysis in geotechnical engineering?
- Classify this soil according to Unified System. Please provide the Group Symbol and the Group Name. How appropriate is this soil as a subgrade material for roadways? Size (mm) 4.75 (No.4) 2 (No.10) 0.425 (No.40) 0.075 (No.200) LL PL % Passing 85 75 34 14 30 14A 7000 meters long and 8 meters wide road is to be constructed in a remote region. Cut and fill are necessary where there is a poor subgrade soil. Four bulldozers excavated the poor subgrade soils. The dimensions of the excavated trench were 0.8 m deep by 10 meter wide and 3.5 kilometers long. The road will have 100 mm aggregate base and 50 mm of asphalt thickness. A bulldozer displaced 115 m3\day, at a rate of 100 cedis per day. A laterite soil will be used in the fill operation. The fill operation will need a grader, a vibratory roller and a water truck for 20 days each at a cost of 130 cedis, 138 cedis and 68 cedis respectively. Daily labor rates for this excavation operation is a foreman, 30 cedis, five laborers, 15 cedis each. Truck driver, 21 Cedis and grade checker, 26 Cedis. Daily labor rates for the fill operations are the same as the excavation rates. One forman, ten laborers and a truck driver will be employed for the fill operations. Grading and asphalt laying will…The following figure shows a section of road. During road construction, the fill material has been used obove a natural soil and a thin soft clay layer. Then the fill material has been compacted untill road level. After raining, a failure took place in the road so the section would be unstable. This road is very crowded and should be repaired as soon as posible. What is your solution to improve it? Explain with detail that why you select this method. Failure line River Compacted fill Natural soil Road Soft clay layer
- A 7000 meters long and 8 meters wide road is to be constructed in a remote region. Cut and fill are necessary where there is a poor subgrade soil. Four bulldozers excavated the poor subgrade soils. The dimensions of the excavated trench were 0.8 m deep by 10 meter wide and 3.5 kilometers long. The road will have 100 mm aggregate base and 50 mm of asphalt thickness. A bulldozer displaced 115 m \day, at a rate of 100 cedis per day. A laterite soil will be used in the fill operation. The fill operation will need a grader, a vibratory roller and a water truck for 20 days each at a cost of 130 cedis, 138 cedis and 68 cedis respectively. Daily labor rates for this excavation operation is a foreman, 30 cedis, five laborers, 15 cedis each. Truck driver, 21 Cedis and grade checker, 26 Cedis. Daily labor rates for the fill operations are the same as the excavation rates. One forman, ten laborers and a truck driver will be employed for the fill operations. Grading and asphalt laying will require:…Classify the soil to be used as a highway subgrade material using AASHTO classification system; Liquid limit for soil passing #40 sieve was determine to be 35% and plasticity index was 20% Sieve No. Size opening (mm) % Finer No. 4 4.75 100 No. 10 2.00 93 No. 20 0.850 87 No. 40 0.425 81 No. 60 0.250 63 No. 140 0.140 49 No. 200 0.075 32A) Being an engineer, what is the role of soil mechanics in highways and bridges? Justify your answer
- b) The results of a grading test on a sample of lateritic gravel intended for the sub-base course of a road project are shown below. The Atterberg limit tests gave a liquid limit of 42 and a Plastic Limit of 20. Table 1 for Question 1 Size 37.10 19.00 6.70 3.18 1.18 0.425 0.300 | 0.212 0.075 Percentage passing (%) Plot the grading curve 100.00 91.82 46.17 33.88 28.99 17.43 15.82 14.22 11.72 i) ii) Determine with clear reasons whether the material meets the minimum requirements of the index properties for the sub-base course in accordance with the GHA Specification for T2. What will be your recommendation for using the material? iii)12. Soil compaction is important information to be controlled during the execution of geotechnical works. An example of problems caused by poor compaction of materials are permanent deformations such as those observed in the existing pavement between Corumbá and the ports of Santos (SP) and illustrated in Figure 1. In an article published on 02/03/2022 in the newspaper Correio do Estado (https://correiodoestado.com.br/cidades/excesso-de-peso-faz-da-br262-uma-rodovia-de-alto-risco/397089) states that "in this region, the base of the landfill is fragile due to account of the inappropriate material used when building the road in the 1980s. Inadequate compaction also caused erosion problems (Figure 2) on the wall built by the United States on the border with Mexico, as published on the official website of the United States Homeland Security at 01/30/2021 (https://www.dhs.gov/news/2021/04/30/dhs- announces-steps-protect-border-communities-wall-construction). Figure 1. Surface sinking…For a typical road construction which requires soil embankment prior subgrade, what is the proper sequence of activities to properly prepare that layer of soil embankment? Which earthwork equipment should we use in order, from first to last?