The sag vertical curve has a back tangent grade of -3% and a forward tangent of +2% is to be designed on the basis of a headlight sight distance of a car travelling along the curve equals the minimum safe stopping distance with following specifications: Design Velocity = 120kph Perception-Reaction Time = 0.75 sec Side Friction = 0.15 (a) Compute the sight distance. (b) If the head lamps are 0.75m above the road surface and their beams tilt upward at an angle of 1-degree above the longitudinal axis calculate the length of the curve. (c) If the station of P.C. is 10+540 and elevation 156.5m Find the elevation of the lowest point

The sag vertical curve has a back tangent grade of -3% and a forward tangent of +2% is to be designed on the basis of a headlight sight distance of a car travelling along the curve equals the minimum safe stopping distance with following specifications: Design Velocity = 120kph Perception-Reaction Time = 0.75 sec Side Friction = 0.15 (a) Compute the sight distance. (b) If the head lamps are 0.75m above the road surface and their beams tilt upward at an angle of 1-degree above the longitudinal axis calculate the length of the curve. (c) If the station of P.C. is 10+540 and elevation 156.5m Find the elevation of the lowest point

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A single-lane off ramp has a radius of curvature of 1,500 ft. The ramp connects two freeways that are perpendicular (i.e., a total of 90° turn). Brush and other visual obstructions are cleared to 25 ft from the centerline of the off ramp. Assume a driver reaction time of 2.5 seconds. (a) What is the stopping sight distance for this curve? (b) What speed limit should be posted for this ramp? (c) What superelevation is required for this curve to be safe to navigate?
The design speed of a horizontal curve on a two-lane freeway is 70 mph. The central angle is 40 degree and the lane width is 11 ft. The superelevation is 6 and was set assuming maximum friction factor, what distance (in ft) must be cleared from the inside edge of the most inside lane to provide adequate stopping sight distance? A. Other B. 27 C. 42 D. 33
A sImpl3 curv3 has A radius of 2 8 0 meters and its distance from the point of cUrvAtur3 to the p0int of tang3ncy along the curv3 is 2 4 0 m3t3rs. Compute the distance from the midpoint of the long chord to the midpoint of the curve. Compute the area bounded by the tangent and the portion outside the central curve. Compute the central angle of the curve using arc basis.
Q1/ Figure below illustrates a compound curve, if the intersection angle between two tangents is equal to (110°), and the intersection angle is (24°59') for the first simple curve (A). And the tangent is equal to (250 ft) for the second simple curve (B).determine The deflection angles and the chord lengths for setting out the curve at whole stations from PC to PT (for second simple curve (B) only) if the station at point (g) is equal to (287+00), and the distance between station (r) and PCC is equal to (30 ft). 110° РСС tR = 250 ft A В \24°59)
Please show complete solutions and box the final answers
Four standard concrete cylinders of 6-inchdiameter cross section were tested underuniformly increasing axial compressive loads 28days after casting concrete. The maximummeasured loads were 121,000 lbs, 116,700 lbs,128,800 lbs, and 119,100 lbs. What is the averagecompressive strength of this concrete in ksi?
STRUCTURAL THEORY: USING PORTAL METHOD. Detailed computation. please
A vehicle travelling at design speed of 80 kmph on a descending gradient of 2.5% meets on ascending grade of 3%. Calculate the minimum length of vertical curve required (in meters) to facilitate smooth movement of vehicle considering head light sight distance of 100 m and assume that passenger is comfortable is all conditions,
The design speed of a multilane is 55kph. What is the minimum stopping sight distance that should be provided on the road if the road is level.
A vertical curve is needed to join to tangents; G₁=1% and G2-4%. Assuming a level grade (0%) for braking, and the AASHTO recommended values for deceleration and perception-reaction time, calculate the minimum length of curve (ft) needed to satisfy the safety criteria. The design speed is 60 mph. Response Feedback: G2-G₁ is positive, therefore a sag curve. A=3 SSD(0%)=565.5 ft If you assume SL, Lmin-340 ft. SSD is greater than Lmin. The assumption is good.
A simple horizontal curve has 35 degrees of curvature and subtends an angle of 110 degrees. If the PC is at station 3 + 65.00 ft, what is the last deflection angle (degrees) (i.e. the angle subtended by the roadway between the last full station and the PT)? Response Feedback: ΔΙ L
answer question 12 only