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Sample Topics

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Surveying

Surveying is generally referred as an art or science which helps in determining the locations of several points with respect to the earth’s surface. This is precisely performed on the surface of the earth. This is done by finding the spatial location which comprises both relative and absolute location of points on or near the surface of the earth. It can be used to measure the horizontal distance, vertical elevation, horizontal and vertical angles between two points.

**Sample Questions:**

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Structural analysis

This branch of engineering is deals with analysis and design of bridge spans, foundations, frames, dams, buildings and other structures that are subjected to dead loads, live loads or a combination of both. Structural analysis makes use of the concepts such as applied mechanics along with structural analysis concepts to calculate the deformation of the structures, internal forces, support reactions, and structural stability.

**Sample Questions:**

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Geotechnical engineering

This division of engineering which involves the natural resources that are close to the earth’s surface. In this discipline the concepts and principles of soil mechanics and rock mechanics are applied in for designing of earth structures, retaining structures and foundation of various structures. Every civil engineering project or construction typically begins with a geotechnical engineer testing the soil.

**Sample Questions:**

1) Refer to the following data: yd in in borrow pit, 87.9 pcf; W in borrow pit, 13.0%; Gs, 2.70; Modified Proctor W(opt), 14.0%; Modified Proctor ydmax, 116.0 pcf. Assume that 50000 yd3 of the soil from the borrow pit is to be delivered to an embankment at a construction site. By the time it reaches the site, the water content is 9%. It will be compacted to a minimum of 90% of modified Proctor maximum dry density. Determine the total volume of water (in ft3) that must be added to the soil to increase the moisture content to the optimum level.

2) The post is made of Douglas fir and has a diameter of 100 mm . (Figure 1) It is subjected to the load of 20 kN and the soil provides a frictional resistance distributed along its length and varies linearly from w=2.4 kN/m at y=0 m to w=16.4 kN/m at y=2 m . Neglect the weight of the post. 3) Weight of dry aggregate = 41 lb. Weight of SSD aggregate = 43.46 lb Total particle volume- 0.25 ft. Calculate

(a) Bulk dry unit weight

(b) Bulk SSD unit weight

(c) Bulk dry specific gravity

(d) Bulk SSD specific gravity

4) Given: Bank Dry Density: 108 lb/CuFt

Loose Dry Density: 85 lb/CuFt , Compacted Dry Density: 120 lb/CuFt

Find: Swell%, Shrinkage%, Quantity of trucks needed for transport, Cost.

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Transportation engineering

Transportation engineering or transport engineering is the branch of Civil Engineering which apply technology and scientific principles to the planning, functional design, operation and administration of services for any mode of transportation to provide for the safe, proficient, rapid, comfortable, convenient, economical, and environmentally compatible movement of populace and commodities transport. However, it is intrinsically multidisciplinary overlaying diverse fields as economics, psychology, geography, public administration, political science, industrial & electrical engineering.

**Sample Questions:**

a) An existing rural freeway in rolling terrain is to be analyzed using the following information: 2 lanes in each direction, Peak hour volume is 3000 veh/h, 13% trucks, 5% recreational vehicles, PHF is 0.91,Lane width12 ft, Lateral clearance 10 ft, Average interchange spacing 1.6 mi. Commuter traffic only. Determine the LOS.

b) The posted speed limit on a four-lane freeway (two lanes in each direction) in rolling terrain is 60mph. The highway has the following characteristics:12ft lanes , 6ft shoulders, Peak hour Factor = 0.92, Peak hour Volume = 2400vph which includes 10% trucks and 6% RVs.If there are no interchanges on the section of highway being analyzed, determine the adjusted demand flow rate, density, and Level of Service.

c) A sag vertical curve has back tangent grade of -8.3% and a forward tangent grade of +1.7%. The design speed is 65 mph. What is the minimum vertical curve length based on headlight sight distance? What is the minimum vertical curve length based on comfort? What is the maximum vertical curve length based on drainage? What is the acceptable range of vertical curve lengths?

d) A segment of multilane highway has the following known characteristics: Total volume 7,200 vehicles/hr Directional split = 6040. Vis (peak direction) = 1,350 vehicles/hr . 4-lane, undivided roadway. BFFS = 55 mph. Level terrain · 7% trucks, 1 % RVs 11-ft lane widths e Right shoulder width 8 ft Left shoulder width = 4 ft. Length = 9 miles .45 access points. Driver population – primarily daily commuters Determine the expected LOS of this multilane highway segment during the peak hour for the peak direction.

Voice of Experts

Harika Rachuri

Student

###### Initially I have started solving problems on Chegg just for some pocket money. But then, continuous problem solving made me indulge more in analyzing the questions and this helped me in building my concepts. This approach motivated me to do a greater number of questions each time. Chegg is one of the best opportunities to learn, teach and earn...

Dinesh Sikand

Teacher

###### Always keen to involve myself in continuous learning, teaching, training, guiding and sharing knowledge with all. Chegg enabled me to fulfill my dream of online help to students. It is a great and noble initiative by Chegg.

Sanjay Kumar

Student

###### Chegg is very punctual with the payments that I receive for my work on monthly basis. The students ask the questions from various subjects of Civil Engineering, and it feels great to be of a help to them. I am satisfied with the amount they pay per solution, and the bonuses are like cherries on a cake. I hope to see a bright future together Thanks!

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