At what depth of flow does the vehicle begin to move

Assignment Help Civil Engineering
Reference no: EM13322548

You are in charge of evaluating the safety (hazard) of a low water crossing. Traffic surveys show that the "Aaverage"vehicle using the crossing is semi-rectangular in shape (10 ft long, 5 ft wide, and 4.0 ft high - not including the distance from the roadway to the floor of the vehicle, 1.5 ft), and weighs approximately 3,000 lbs. Assume the vehicle, including the engine compartment is completely sealed. Each tire has about 1 ft by 0.67 ft of tire tread in contact with the road surface. Assume that the specific weight of the water flowing is 62.4 lb/ft3 (likely a low estimate since the water is carrying sediment). Given this information,

A. At what depth of flow will the vehicle just begin to float?

B. If the coefficient of static friction (cs) is 0.35; the coefficient of drag is 2.1 (length of vehicle is perpendicular to flow); the velocity of flow, regardless of depth, is 5 ft/s; and the total vehicle weight is equally distributed to all tires. Given this,

a. At what depth of flow does the vehicle begin to move?

b. Once the car begins to move, the coefficient of friction appropriate is the kinetic coefficient, do we care?

c. A tree moving with the flow now hits the vehicle. What force does this add to the situation?

Reference no: EM13322548


Write a Review


Civil Engineering Questions & Answers

  What are the proceeds of this sale

What are the proceeds of this sale and if the note was sold at simple discounting conditions instead, at a simple discount rate of 17%, how much would the sellerleceive for the note?

  Calculate pump power equired to operate the heat exchanger

The heat exchanger consists of 12 m of copper tubing that is 2 cm in diameter with 19 return bends. The flow rate is 3 x 10-4 m3/s. Water enters at 20 C and exits at 80 C. The elevation difference between the entrance and the exit is 0.8 m.

  What is the retention time in each of the settling tanks

A water treatment plant has 6 settling tanks that operate in parallel (the flow gets split into six equal flow streams), and each tank has a volume of 600 m3.

  What is the dry unit weight of this material

A soil borrow material in its natural state in the ground has a unit weight of 118pcf. Its natural water content is 7%. What is the dry unit weight of this material?

  Discuss how the nec3 form of contract provides stimulus

Discuss how the NEC3 form of contract provides stimulus to good management and compare and contrast this where possible with other forms of contract.

  Calculate the ifov corresponding to the spatial resolution

LANDSAT as a spatial resolution of 15m and an altitude of 700km. IKONOS has a spatial resolution of 1m and an altitude of 680km. Calculate the IFOV corresponding to the spatial resolution for sensor.

  Determine the diameter of the pipe required to convey

Water at 20 °C is transported through a 200 m long wrought iron pipe with a head loss of 9.8 m. Determine the diameter of the pipe required to convey 10L/sec.

  Calculate the ratio of area to volume for unit cube

calculate the ratio of area to volume for unit cube a unit sphere in inscribed inside the cube, and as write cylinder inscribed inside the cube.

  How is the minimum radius affected if the b decreases

Roller coasters are designed so that the riders will not experience more than a certain level of g-force during the ride. (The rider would experience B g's if hte normal force were Bmg where B is a numbe

  Determine max speed of the bicycle neglect rolling friction

The specific weight of aire is .075 lb/ft^3. The physiological limit of the power for this well trained cyclist is .5 hp (1hp=550 ft*lbs/s) Neglect rolling friction, find the max speed of the bicycle.

  Determine the friction drag on one side of the plate

Water flows past a triangular flat plate oriented parallel to the free stream as shown. Integrate the wall shear stress over the plate to determine the friction drag on one side of the plate. Assume laminar boundary layer flow.

  Problem related to horizontal cylindrical tank

A horizontal cylindrical tank 4 ft in diameter and 10 ft long is full of water. Find the work done in pumping the water to a point 4 above the top of the tank.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd