The marine environment can be harsh and sometimes features dynamic wave loads, poor soils, intense sedimentation, corrosion, sensitive ecosystems, extremely variable tides, heavy seas, ice, earthquakes, and shoreline movement. These environmental conditions are challenging for infrastructure. The need to protect facilities from moderate-height waves led PND to develop the partially penetrating wave barrier.
In 1980, the first PND-designed wave barrier was successfully constructed at a U.S. Coast Guard facility in Oregon. After a severe storm in 1986 hit the wave barrier, it easily withstood 6-foot waves.
Advantages of the partially penetrating wave barrier:
- Reduces construction and minimizes costs
- Reduces construction time
- Minimal space required
- Allows natural basin flushing
- Minimizes impact on the marine environment
- Minimizes loading on submarine soils
- Reduces the breakwater’s susceptibility to seismic damage
- Does not require rock quarrying and related activities
- Uses methods and materials of construction similar to docks
- May be attached directly to existing docks
- May be used as a part of foundation system for future docks
- Can be removed readily for modification or expansion
- Allows construction in deep water
- Can provide mooring directly to the breakwater
- Can be constructed with a variety of materials and construction methods
PND Wins AAHPA Golden Anchor Award
On our 40th anniversary, PND Engineers, Inc. wins the inaugural Golden Anchor Award at the 40th annual AAHPA Conference at Elizabeth Peratrovich Hall in Juneau, Alaska. The award was bestowed upon PND for the company's achievement and support to the AAHPA and its corporate members.
PND Featured in a Pair of Case Studies
PND Engineers, Inc. was recently featured in a pair of case studies that took a deeper dive into the company's value engineering solutions for projects in Sandys Parish, Bermuda, and Unalaska, Alaska – solutions that not only presented unique design alternatives but also produced millions in cost savings.