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PE Civil Engineering Transpo Exam Questions and Answers
Typology: Exams
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Which of the statements about project delivery is false? A. The design-bid-build method is the tradition model for the public sector to deliver various infrastructure projects. B. A design build is used when an owner develops conceptual plans, then asks for bids from joint ventures that can include architects, engineers, and/or builders to design and construct the project. C. With a public-private partnership, the private sector always finances the project until completion. D. Integrated project delivery strives to include all project participants during each stage of the project to improve efficiency. - ANSWER-C. With a public-private partnership, the private sector always finances the project until completion. ** Be sure to look for definitive words with these types of questions such as always. Concrete is great in compression, but poor in tensions. For a cantilevered beam where would the beam be in compression and where would it be in tension? Where would you put steel reinforcement to strengthen the beam? - ANSWER-Beam is in compression in the bottom and in tension in top. Therefore, putting steel reinforcement in the top would make the beam stronger. What kind of beam cross section is best at resisting a torsional load? - ANSWER-Best is a solid circle. Closed sections are best while any open section will perform poorly. High volume, high concentrated flows that displace large amounts of soil quickly. - ANSWER-Gully Erosion According to ADA the max ramp grade and cross section grade are? (%) - ANSWER- 8.33%- Ramp 2%- cross section Which of the following is not a typical contributing factor to the development of alligator cracking? A. Lack of adequate support from a shoulder B. Weakness of the base course or subgrade C. Fatigue of the HMA surface from repeated traffic loadings
D. Insufficient pavement thickness - ANSWER-A. Lack of Adequate support from a shoulder What kind of cracking is from lack of adequate support from a shoulder? - ANSWER- Edge Cracking Which of the following is true about the planning time index (PTI)?
Right turns from exit ramps are free-flow or yield controlled What type of curve includes a simple arc of a circle which is tangential to both the straight segments along the roadway? - ANSWER-Simple curve What type of curve consists of two circular arcs having their centers on the opposite side of the roadway? - ANSWER-Reverse Curve What type of curve is comprised of two or more simple curves with varying radii? - ANSWER-Compound curve A uniform layer of shallow flowing water that moves loose soil particles. - ANSWER- Sheet Erosion Displaced soil particles due to the impact of raindrops. - ANSWER-Splash Erosion Concentrated flow that creates small, eroded channels. - ANSWER-Rill Erosion How do you find the lag time on a hydrograph? - ANSWER-Peak stream discharge (peak of hydrograph)-peak rainfall. (Difference between the two, needs to be a positive number). See page 394 in reference manual. The number of vehicles passing a point in a given time period. - ANSWER-Flow The time between successive vehicles in seconds. - ANSWER-Headway The number of vehicles occupying a unit length of roadway. - ANSWER-Density The distance between consecutive vehicles in feet. - ANSWER-Spacing Cement Type I - ANSWER-Normal cement used for most construction. Cement Type II - ANSWER-Moderate Sulfate Resistance Cement Type III - ANSWER-High early strength (hardens more quickly; used when reduced curing time is required). Cement Type IV - ANSWER-Low heat of hydration (used in massive structures such as dams, where emitted heat might raise the temperature of the concrete to damaging levels). Cement Type V - ANSWER-High Sulfate Resistance, used in aggressive environments where risk of sulfate attacks are present.
A bridge footing is to be constructed in sand. The groundwater level is at the ground surface, The ultimate bearing capacity would be based on what type of soil unit weight? A. Buoyant Unit Weight B. Saturated Unit Weight C. Dry Unit Weight D. Total Unit Weight - ANSWER-Buoyant Unit Weight which is also effective unit weight The minimum factor of safety against rotational failure for permanent slopes under long- term, non-seismic conditions influencing occupied structures is closest to:
3.0 - ANSWER-1.5. Most references use 1.3, but 1.5 is closest. The Standard Penetration Test (SPT) is widely used as a simple and economic means of obtaining which of the following? A. A measurement of soil compressibility expressed in terms of a compression index. B. A direct measurement of the undrained shear strength. C. An indirect indication of the relative density of cohesionless soils. D. A direct measurement of the angle of internal friction. - ANSWER-C. An indirect indication of the relative density of cohesionless soils. Fatigue in steel can be the result of: A. A reduction in strength due to cyclical loads. B. Deformation under impact loads. C. Deflection due to overload. D. Expansion due to corrosion. - ANSWER-A. A reduction in strength due to cyclical loads. What kind of curve has a continuously varying radius? The radius is constantly varying over the length of the curve. - ANSWER-Spiral curve A circular horizontal curve is present along a two-lane highway with 12' lanes and 10' shoulders. The curve is being redesigned, as sufficient stopping sight distance is not available due to a longitudinal barrier that obscures the line of sight. Select the alternative design consideration(s) that could safely provide adequate sight distance.
What preventive measure should you use for raveling? - ANSWER-Rejuvenating seal What preventive measure should you use for block cracking? - ANSWER-Chip Seal What preventive measure should you use for reflective cracking? - ANSWER-Rout and seal cracks What preventive measure should you use for Potholes? - ANSWER-Surface Patches To forecast traffic trends, transportation engineers utilize travel demand models. The gravity model is used during which step of a traditional four step model? 2nd step - ANSWER-Trip distribution Predicts the number of trips originating in or destined for a particular traffic analysis zone. 1st step. - ANSWER-Trip generation Determines the type of transport that will be used. 3rd step - ANSWER-Mode choice The selection of routes between origins and destinations in transportation networks. 4th step. - ANSWER-Trip assignment