Q 1: Determine the minimum length of a highway sag curve (based on SSD Criterion) that is designed to join a - 0.035 grade to a + 0.025 grade, if the design speed is 90 km/h. Assume a = 3.4 m/s2, t = 2.5 s. %3D %3D

Q: answer question 18 only

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Q: 9. Assuming 0% grade, and AASHTO's recommended perception reaction time and recommer deceleration…

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Q: Determine the minimum length (Lmin) of a curve above if the slopes are + 3% and -3%, with a design…

A: Here upward gradient meets downward so use formula of summit curve

Q: A tangent section of highway has a -1.0% grade and ends at station 4+75 and elevation 82 ft. It must…

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Q: You are designing a vertical sag curve joining a -3% grade to a + 2% grade. The design speed is 60…

A: Given, G1 = -3% G2 = 2% V = 60 mph

Q: An equal tangent vertical curve is to be constructed between grades of -6.75% (initial) and 4.75%…

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Q: 19. What is the stationing (ft) of the EVC?

A: Length of curve, L = 1100ft  ⇒ 11 stations.   Stationing of BVC = 12+15 ft.

Q: You are designing a vertical sag curve joining a -3% grade to a +2% grade. The design speed is 60…

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Q: Referring to the following illustration, a -4% grade meets a +5% grade at the point of vertical…

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Q: Step bt step solutionProblem 2: A horizontal curve on a single-lane freeway ramp is 400 ft long, and…

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Q: have designed a vertical crest curve which joins a +3% E mph and you have determined the curve to be…

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Q: . Does the S>L condition hold true? YES or NO 2. Assuming S<L, calculate the minimum length (ft) of…

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Q: Question # 5 An existing crest vertical curve which connects +3% and -1% grades is designed for 55…

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Q: 3. What is AASHTO's recommended perception reaction time (s)?

A: Reference : AASHTO, American Association of State Highway and Transportation To determine : AASHTO…

Q: highway engineer must stake a symmetrical vertical curve where an entering grade of +0.80% meets an…

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Q: An engineer has been decided to design a vertical curve of a ( - 2.5) percent grade meting a (3.2)…

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Q: Question 3 An equal-tangent vertical curve is to be constructed between grades of -2 percent and +1…

A: Given :

Q: A horizontal curve with spiral is being designed for a new two-lane highway (3.6-m anes and 2%…

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Q: A vertical road was designed with three tangent lines having a grade of -7.8%, 3.7%, and -2.1%,…

A: G1=-7.8% ,G2=3.7% ,G1'=3.7% ,G2'=-3.2%

Q: nly answer question 6

A: Stopping Sight Distance is the minimum distance that must be available in front of driver so that he…

Q: Problem 1. A 2300-ft equal-tangent crest vertical curve is currently designed for 60 mph. This curve…

A: L= 2300 feet V= 60 mph initial grade G1 = +3.5%  To find: 1. The min k-value under 60 mph design…

Q: An equal-tangent crest vertical curve is designed for 45 mi/h. The high point is at elevation 380.10…

A: Solution  Given That G1=+1.90%G2=-3.10%

Q: A vertical road was designed with three tangent lines having a grade of 7.4%, -4.3% and 2.3%,…

A: Given that :-a vertical road was designed with following specifications :Elevation of Elevation of…

Q: n equal tangent vertical curve is intended to connect grades of 1.8% and -2.7%. If this curve is to…

A: From the given question it is required to calculate the minimum length of vertical curve part of a…

Q: Engineers group have been decided to design a highway with vertical curve in order to transfer the…

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Q: 5. What is the assumed height (ft) of the driver's eye for passenger cars?

A: Explanation :  The driver's eye distance/ height of driver's eye for passanger cars is the vertical…

Q: A vertical road was designed with three tangent lines having a grade of 7.0%, -4.9%, and 2.2%,…

A: G1 = 7% = 0.07 G2 = -4.9% = -0.049 G1' = -4.9% = -0.049 G2' = 2.2% = 0.022 l1 = 113.61m

Q: The extra widening required for a two-lane national highway at a horizontal curve of 275 m radius,…

A: Given data- 2 Lane national highway-Radius of curve R=275 mwheel basd radius L=7.5 mDesign speed…

Q: A horizontal curve on Texas Highway 83 (Tx83) comprises of a two-lane rural highway with a lane…

A: Stopping Sight Distance: It is the minimum sight distance available at any spot having sufficient…

Q: 1. A crest vertical curve connects a +1.5 % grade with a -2.5 % grade on a two-lane highway. The…

A: Data given Grades = +1.5% and -2.5 % Design speed = 90 km/hr PI  Station = 14+465 PI  Elevation =…

Q: An equal-tangent vertical curve connects a +1.5% initial grade and a -3% final grade. The PVT is at…

A: Following are the given information.Initial grade, Final grade, Station of PVT Elevation of PVT…

Q: A highway containing a crest vertical curve (equal tangent mph. The length of the curve is 840.00ft…

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Q: A +2% grade intersects with a -1% grade at station (535-24.25) at an elevation of 300 ft. If the…

A: Solution:-Given,Elevation=300ftDesign speed=60 mi/hg1=2%g2=-1%

Q: ye height of 2.4m, a passenger car driver eye height of 1.1m, and an object height of 0.2m,…

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Q: A horizontal curve is being designed for a new four-lane roadway with 11-ft lanes. The PT is located…

A: Given;Road has four lane of 11 ft.PT is located at station 105+20Design speed = 45 mph =66…

Q: equal tangent vertical curve is intended to connect grades of 5% and -2.5%. If this curve is to be a…

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Q: A-1.7% grade intersects a 3.6% grade on a highway with a design speed of 55 mph. What is the length…

A: Design speed= 55 mph

Q: A crest vertical curve joining a + 3 percent and – 4 percent grade is to be designed for 75 mph. If…

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Q: A vertical road was designed with three tangent lines having a grade of 7.3%, -3.9%, and 2.8 %,…

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Q: Q- The extra widening required for a two-lane national highway at a horizontal curve of 300 m…

A: Given- 2 Lane highway, Radius R=300 m, wheel base l = 8 m, design speed V=100 kmph.

Q: Determine variables requested below for a horizontal curve with the following characteristics.…

A: Answer We know that length in full superelevation is given by  length in full superelevation =…

Q: d on this curve? What speed should be posted if 8kph increments are used?

A: FInd the Stopping sight distance S=NL24.4S=4.4+4.41008224.4S=134.48&gt;Lusing another equation…

Q: Just do question 2

A: The "A" is the algebraic difference of the grades. As shown below.

Q: Design a Two way - one lane Highway with the following specification. V= 90 kph e=0.05 m=15 m SD=115…

A: Given:- The design speed = 90 kph The super elevation rate = e = 0.05 m The value of m = 15 m The…

Q: 4. What is AASHTO's recommended deceleration rate (ft/s)?

A: Following factors affect the stopping sight distance 1. Speed of vehicle  2. break reaction time. 3.…

Drainage of Pavements

Pavement Drainage holds ample significance, as it prevents the accumulation of water or any liquid on the surface of pavements and ensures proper drainage system. With proper design and gradual slopes provided, the water gets easily removed from the surface into the drains, which are essential during heavy rains and unusual weather conditions keeping it less prone to accidents and increasing the durability of the pavement structure.