LED Industrial Lights LED Sensor Lights LED Street Lights LED Residential / Commercial Lights
West Northern Lights Boulevard – Sound Barrier Improvements August 16, 2006
18
West Northern Lights Boulevard – Sound Barrier Improvements August 16, 2006 Meeting Purpose: A Forum to Share and Gather Information The Municipality of Anchorage Project Management and The Municipality of Anchorage Project Management and Engineering Dept. and CRW Engineering Group, LLC Engineering Dept. and CRW Engineering Group, LLC
description
West Northern Lights Boulevard – Sound Barrier Improvements August 16, 2006. Meeting Purpose: A Forum to Share and Gather Information. The Municipality of Anchorage Project Management and Engineering Dept. and CRW Engineering Group, LLC. Introduction. Rebecca Campbell, CRW Engineering - PowerPoint PPT Presentation
Transcript of West Northern Lights Boulevard – Sound Barrier Improvements August 16, 2006
West Northern Lights Boulevard – Sound Barrier Improvements
August 16, 2006
Meeting Purpose:
A Forum to Share and Gather Information
The Municipality of Anchorage Project Management and Engineering The Municipality of Anchorage Project Management and Engineering Dept. and CRW Engineering Group, LLCDept. and CRW Engineering Group, LLC
August 16, 2006West Northern Lights Blvd. Sound
Barrier Improvements2
Introduction
Rebecca Campbell, CRW Engineering Steve Gillette, PM&E
August 16, 2006West Northern Lights Blvd. Sound
Barrier Improvements3
Study Area
West Northern Lights Boulevard – Forest Park Drive to Arlington Drive
Overview
August 16, 2006West Northern Lights Blvd. Sound
Barrier Improvements4
Study Results
One 24 hour monitor was set at 2050 Churchill Drive (Ldn)
Numerous Spot Measurements were taken along the study area. (LEQ)
The Equivalent Level (LEQ)- represents the average noise level for an entire hour
The Day-Night Level (Ldn) – 24 hour weighted noise average
Noise Study
August 16, 2006West Northern Lights Blvd. Sound
Barrier Improvements5
Study Results
24 Hour average (Ldn) at 2050 Churchill Drive was 78 decibels (dBA)
The standard noise criteria for residential developments are:
– Ldn 60 dBA normally acceptable– Ldn 65 dBA conditionally acceptable– Ldn 70 dBA normally unacceptable– Ldn 75 dBA unacceptable
Noise Study
6
Noise StudyNoise Study Results
Peak Hour LEQ
August 16, 2006West Northern Lights Blvd. Sound
Barrier Improvements7
Sound Barrier Goals
Reduce sound levels by 10 decibels Provide a cost effective solution that will
benefit the maximum number of residences Maintain the aesthetic properties of Northern
Lights Boulevard Maintain the aesthetic qualities of the
residences
Noise Barrier Options
August 16, 2006West Northern Lights Blvd. Sound
Barrier Improvements8
Noise Levels Location and Height Barrier Material Utility Impacts ROW Impacts Construction Access Cost
Design Factors
Noise Barrier Options
August 16, 2006West Northern Lights Blvd. Sound
Barrier Improvements9
Location and Height
Noise Barrier Options
Location– Located where the barrier will
provide maximum noise reduction – In cut sections, the barrier is most
effective at the top of the cut slope– Safety must be considered
Height– High enough to block the line of
sight of traffic
10 Preferred Location for Maximum Noise Reduction
11 Section A-A
12 Section B-B
August 16, 2006West Northern Lights Blvd. Sound
Barrier Improvements13
Barrier Material
Noise Barrier Options
Earthen Berm Wooden Wall Masonry Wall Synthetic Wall
August 16, 2006West Northern Lights Blvd. Sound
Barrier Improvements14
Noise Barrier Material
Wooden Barrier
Wooden Barrier - New Seward Highway North of DeArmoun Wooden Barrier - Glenn Highway East of Bragaw Street
August 16, 2006West Northern Lights Blvd. Sound
Barrier Improvements15
Synthetic Wall
Noise Barrier Material
C Street North of Dimond Muldoon Road at James Drive
August 16, 2006West Northern Lights Blvd. Sound
Barrier Improvements16
Noise Barrier Costs
Material Cost per foot1
Total Cost2
Wooden $380 $465,000
Masonry $550 $660,000
Synthetic $900 $1,080,000
1 Estimated Total Length of Wall Required = 1,200 feet2 Available budget is $150,000
August 16, 2006West Northern Lights Blvd. Sound
Barrier Improvements17
Project Schedule
Noise Data Collection (April 2006) Design Study (July-August 2006) Public Meeting (August 2006) Design (August – November 2006) Additional Funds Required (April 2007) Bidding (May 2007) Construction (July 2007)
Summary
August 16, 2006West Northern Lights Blvd. Sound
Barrier Improvements18
Contact Information
Key Personnel– Rebecca Campbell, PE – CRW Project Engineer
Phone 562-3252 e-mail [email protected]
- Steve Gillette, PE – MOA Project ManagerPhone 343-8173
THANK YOU!
