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Highway Noise Barriers  
Hanson offers both concrete Post-and-Panel Barrier systems and our advanced Durisol Sound Absorptive Noise Barrier Systems.
 
Our standard concrete barrier systems offer the following advantages:
Attractive — the cedar-stake random-board-length finish on the homeowner’s side resembles an attractive wooden fence
Durable — resistance to rust, rot, fire and warping ensures a design life well in excess of 30 years
Eco-riendly — minimal environmental disturbance — the post itself has a footprint of only 16 inches by 14 inches
Quickly installed — auger holes, place the anchor bolts in holes that are properly spaced and plumbed, pour concrete and allow to cure. Slide panel into post grooves, grade and landscape
Reliable designs — depth and diameter of concrete piers designed to coincide with subsurface conditions
 
Versatility
Easily transition to varying ground level, and can be installed at angles or curves
and in narrow right-of-way conditions, reducing the need to remove valuable trees and landscaping
Not only control noise and sight pollution, but also serve as security barriers in highway, industrial complex and public utility applications and housing developments
 
Applicable Specifications
The level of highway noise is generally in the range of 80 db. The U.S. Department of Transportation Federal Highway Administration sets 70 db. as the maximum design noise level imposed on most common adjacent land uses.

Make note that noise levels follow a logarithmic curve, which means that a reduction from 80 db. to 70 db. actually results in a 50 percent lower volume of noise. Superior Precast, Inc., noise barrier has recorded reductions of 10 db. and higher, which brings the noise level well within the federal guidelines.
 
Durisol
Durisol is a proprietary material that is made of specially graded wood shavings molded and compressed to suit the desired aesthetic and technical requirements. Hardened Durisol is lightweight, porous and very durable.

Durisol is a tried and tested material with a track record of over 50 years. During this long history, Durisol products have been developed and used in many applications around the world. Durisol’s features include the following:

Density less than 750 kg/m3
High strength to weight ratio
Thermal insulation
Non-combustibility
Sound absorption
Freeze/thaw resistance
Negligible capillary suction
Dimensional stability
Resist decay, rot, vermin, insects and fungus growth

Durisol manufacturers, under the umbrella of Durisol International Corp., continually strive to enhance process technology, to develop new applications and to maintain high standards of quality. Up-to-date laboratories maintain product quality and facilitate research and development to meet customers’ future needs.

Technical assistance in the design and application of Durisol products or test reports is available upon request. Our qualified personnel can provide optimal solutions to aesthetic, structural and economic requirements.

Contact Hanson to learn about Durisol and Durisol products.
 
 
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