Which type of sampling is most appropriate if you want to study the relationship between traffic density and the concentrations of Pb, Cd, and Zn in roadside soils.   CHOICES: random-convenience sampling   random-quota sampling   systematic–convenience sampling   systematic–judgemental sampling

Q: Briefly describe a suitable type of cutback bitumen to be used as a prime coat and tack coat in the…

A: Prime Coat: A prime coat is the layer present between Asphalt Course and Crushed Aggregate Base…

Q: Question: Discuss at least two FDTs (Field density tests) used in road construction projects in…

A: The relative density of soil that has been compacted using machinery is measured in a soil field…

Q: Estimate the number of lanes of a highway having a LOS E of 0.86 if its AADT is 32,000 pcu/day while…

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Q: DoT extensive study results on highway speed     Population mean: μ 64.8 mph   Population standard…

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Q: 11. A section of a highway with length of 10 Km was evaluated using the Pavement Condition Rating…

A: In this particular problem road section with different failure have been shown in the picture We…

Q: Determine the overhaul (in m³-m) of the proposed highway construction using Mass-Haul Diagram.…

A: Given:- The volume of cut and fill are given  The shrinkage percentage = 14.3% To determine:- The…

Q: 7. Municipal waste deposited on landfills is a highly geotechnical and diverse material, depending…

A: Landfill material is heterogenous type of material. Therefore properties of the material are…

Q: Why was the field sample test method developed? Name the three methods for  reducing field sample.

A: Field Sampling : ( DEFINITION )               Field sampling means the process of examining the…

Q: In one road project , for rehabilitation existing pavement by overlay technique , the effective…

A: To find effective structural coefficient number for existing pavement

Q: QS: Select the correct answer for the following multiple-choice questions: 1. In circular loading on…

A: Hi! Thank you for the question, as per the honor code, we are allowed to answer three sub-parts at a…

Q: Determine the crash modification factor

A: Crash modification factor: - It is defined as a factor which is used to calculate the number of…

Q: a)      Identify the purpose of the Proctor Test. b)      List the necessary equipment to conduct a…

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Q: A before-and-after speed study was conducted to determine the effectiveness of a series of rumble…

A: To determine whether the rumble strips were effective, we need to compare the average speed before…

Q: 5 4 4 5 4 Find the mean , median, mode, standard deviation and C.O V for the value above?

A:

Q: In an experiment, if persons are tested for before-and-after measurements, then the samples are…

A: We take pre and post samples before and after testing in an experiment to compare the affects or…

Q: discuss the Applications and Uses of Geotechnical Testing in Road Construction Engineering

A: Applications of Geotechnical Testing in Road Construction:- The geotechnical tests that must be…

Q: A WT305 x 41 standard steel shape is used to support the loads shown on the beam in Figure below:…

A:

Q: i the table shows a summary liquid limit and plastic limit Compute the liquidity index. id Limit…

A: The given data is shown below:

Q: disposal site. Find the haul-speed constants a and b and the round-trip haul time for a site that is…

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Q: A six-lane divided highway is to be designed to replace an existing highway. The present AADT (both…

A:

Q: Knowing that the work you are going to work on has indicated a minimum degree of compaction of 90%,…

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Q: Pavement Condition Index (PCI) Survey is developed by US Army Corps of Engineers to quantify the…

A: PCI is a numerical index that is used to indicate general condition of a pavement section. It…

Q: The unevenness index calculated as per International Roughness Index is 3.054 m/km. Determine the…

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Q: As part of its highway tort liability risk management program, a city’s road department wishes to…

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Q: Discuss the utility of the Universal Soil Loss Equation (USLE) in the study of soil erosion.

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Q: difference between stratified sampling and cluster sampling methods

A: difference between stratified sampling and cluster sampling methods:

Q: vehicle speeds were recorded (mph): 45, 50, 55, 62, 48, and 82. Determine the time mean speed and…

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Q: Onestion One: Explain based on engineering feature briefly for the followings: m)What are the tests…

A: Brief concept introduction- Subgrade- The natural material beneath a manmade road, pavement, or…

Q: A six-lane divided highway is to be designed to replace an existing highway. The present AADT (both…

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Q: Within a month after the restoration of the asphalt pavement, on average, there is one…

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Q: Following figure shows the mass-haul diagram for a road project. -Mass-Haul Diagram Volume (m³)…

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Q: ransportation

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Q: 1. For heavy traffic, which compaction test should be conducted on the subgrade? What is the reason…

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Q: 2. A 24-hour count using a road tube at a rural highway location produces a count of I1,250…

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Landfills

The landfill is a site used for the disposal of waste materials. The landfill is a solid waste facility that is often known as a dumping ground. The image below shows a landfill site in Hawaii. Landfilling is the most ancient and common method used for the disposal of waste. For the landfill, a deep trench is constructed in an isolated place away from the city. The trench for landfills is designed properly after analyzing the total population and the waste generation per capita. The waste is dumped into the trench and after every layer of waste, a layer of soil is spread on the top of it.