Calculate the height of a barrier needed to reduce traffic noise from 80 dBA to 65 dBA. Assume traffic noise has a frequency ~ 1000 Hz and the distance from the road to homes is 30 feet. 4.62 m 3.89 m 10.43 m 2.23 m

Calculate the height of a barrier needed to reduce traffic noise from 80 dBA to 65 dBA. Assume traffic noise has a frequency ~ 1000 Hz and the distance from the road to homes is 30 feet. 4.62 m 3.89 m 10.43 m 2.23 m

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: 2.) Traffic flow on a single lane is moving with a free flow speed of 40 kph and density of 50…

A: Free flow speed is 40kmph Density of traffic is 50veh/km Flow stopped f

Q: Calculate the height of a barrier needed to reduce traffic noise from 80 dBA to 65 dBA. Assume…

Q: Find minimum sight distance to avoid head-on collision of two cars approaching at 90 kph and 60 kph.…

Q: A golf ball is dropped from rest from a height of 8.40 m. It hits the pavement, then bounces back…

Q: 4) The frontal surface area of a cyclist has been measured as 0.8 m2. Knowing that the coefficient…

A: ASKED: To determine the horizontal force to be applied by the cyclist to move at given speed.…

Q: 1.1 The speed flow relationship for a lane in Arlington is believed to be q-300*u-70*u*In(u), where…

Q: Answer the following questions a) Derive an equation to estimate speed of shockwave.

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Determine the total distance traveled by an automobile from the moment the driver observed the…

Q: 10-24. Determine the Lio noise level for the following highway traffic situation: Autos = 2,000 per…

A: Given -

Q: A driver with 20/40 vision needs 1.6 seconds to read a sign posted on a freeway. A person with 20/20…

A: 20/20 vision can read at 250 ftTime required = 1.6 sec Speed = 60 mph = 88.2 ft/sec

Q: A garden hose attached with a nozzle is used to fill a 20-gal bucket. The inner diameter of the hose…

A: We have to determine the value of how long it will take to fill the bucket with water and the volume…

Concept explainers

Connections

In steel structures, connections are the members that join two or more steel members. The connections are the most important members of any steel structure, and hence, they are designed more carefully. The majority of the construction cost of steel structures is incurred due to the connections. The design of connections is done as per the recommendations and specifications of the American Institute of Steel Construction (AISC).

Question

Calculate the height of a barrier needed to
reduce traffic noise from 80 dBA to 65 dBA.
Assume traffic noise has a frequency ~ 1000 Hz
and the distance from the road to homes is 30
feet.
4.62 m
3.89 m
10.43 m
2.23 m

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

(c) Consider a section of a four-lane freeway (two lanes in each direction) as shown below. The freeway typically carries 2571 veh/hr during the morning peak period. An accident occurs at 8:00 AM at Point A, blocking the entire freeway in that direction. Fifteen minutes after the accident, one lane is cleared and traffic begins to flow again past point A. Assuming a triangular fundamental diagram as shown below, use shock wave analysis to answer the following questions: (1) Where is the end of the queue at 8:15 AM? (2) When (at what time) are the vehicles on the freeway last forced to stop by the queue? (3) What is the maximum size of the queue? (4) What is the maximum distance of the end of the queue from the accident site? At Time t = 8:00 AM *(k,) B A 15 miles At Time t = 8:15 AM i, (k,) *, (k,) *,(k,) *, (k,) , (k,) A miles Flow-density relationship (one lane) Flow-density relationship (two lanes) 4000 4000 when k
I need the answer as soon as possible
Determine the total distance traveled by an automobile from the moment the driver observed the danger while driving at 75 kph. Skid resistance is 0.60 on average
pts) In a section of highway 200ft long, three vehicle A, B, and C are traveling at constant speeds of 25 ft/sec., 40 ft/sec. and 20 ft/sec. respectively, and are positioned as shown. Determine; the time mean speed (U) at screen line NN, the space mean speed (U), the density (D), the volume (Q) of the flow, the spacing (S), and the average headway (h).
Problem 15.15 A 5000-N car hits the crash barrier at 80 km/h and is brought to rest in 0.11 seconds. What average power is transferred from the car during the impact?
Please answer in detailed no. 2
Problem 3: A public school holds its flag ceremonies every Monday from 7:00 AM to 7:15 AM. During the singing of the national anthem, which lasts for about 2 minutes, all drivers stop in front of the school as an act of respect. Determine the characteristics of the shock waves formed by this activity. Estimate the time required for the traffic flow to be back to normal. q= 1800 vph; v = 30 kph 300 m k = 80 veh/km; v = 0 kph || k = 40 veh/km; q = 1000 vph→ school
At a specific instant in time, a car, van, or truck passes near an elementary school. Individually, these noise sources generate noise levels of 40, 60, or 100 decibels (dB) at the school, respectively. Determine the combined loudness that is experienced by the school when they all pass at the same time. If traffic noise experienced by the school becomes excessive, what immediate measure(s) would you recommend mitigating the noise levels? How would you justify the cost associated with such an investment?
2- Firefighters are holding a nozzle at the end of a hose while trying to extinguish a fire. If the nozzle exit diameter is 10 cm and the water flow rate is 12 m³/min, determine (a) the average water exit velocity and (b) the horizontal resistance force required of the firefighters to hold the nozzle. 12 m³/min
Determine the number of gallons of paint needed to paint the outside surface of the water-supply tank, which consists of a hemispherical bottom, cylindrical sides, and conical top. Each gallon of paint can cover 250 ft2.
Compute the rate of flow (vph) if the space mean speed is 40 mph and the density is 22 vehicles per mile. Use the fomula q = kµs O 460 vph O 1200 vph O 620 vph O 880 vph
Select the true items related to absorption capacity. Select only the four correct answers. Practical absorption capacity is usually less than theoretical absorption capacity. It is the minimum possible number of vehicles from the minor approach that can merge into the mainstream traffic per hour. Absorption capacity depends on the vehicle arrival rate at the minor approach. Practical absorption capacity is usually more than theoretical absorption capacity. Absorption capacity does not depend on the flow of the mainstream traffic. Absorption capacity depends on the flow of the mainstream traffic. Absorption capacity does not depend on the vehicle arrival rate at the minor approach. It is the maximum possible number of vehicles from the minor approach that can merge into the mainstream traffic per hour.