Call Now
Website
Call
Business Details
50+ Years
experience
Emergency
services
Professional Piling & Foundation Solutions
McDowell NW Pile King has established itself as a leader in foundation piling and deep foundation systems since the late 1960s. Our patented Pile King equipment combines compact design with powerful hydraulic capabilities, enabling efficient operations in limited-access sites while maintaining safety and precision. With roots in the construction industry dating back to the 1940s, we leverage decades of expertise to deliver specialized solutions for shoring walls, helical anchors, and solar panel support systems.

Our team collaborates closely with geotechnical and structural engineers to provide value-engineered projects that prioritize cost-effectiveness without compromising quality. Recognized across the Northwest for reliable service and innovative methodologies, we maintain a fleet of specialized equipment to handle complex challenges in residential, commercial, and industrial settings while adhering to strict environmental and safety standards.
Services
Pipe Pile Installation Shoring Walls Helical Anchors Solar Panel Supports Foundation Underpinning Manta Ray Anchors Material Sales Equipment Rentals Value Engineering
Details
  • Year established: 1969
Highlights and features
  • Specialized in piling systems since 1969 with patented compact equipment
  • Engineered solutions trusted by geotechnical professionals across the Northwest
  • Comprehensive service portfolio from foundation underpinning to solar panel support
  • Proven track record with complex projects in limited-access environments
  • Value-engineered approaches that maintain quality while reducing costs
What people say
Professional crews Timely execution Technical expertise Problem-solving skills Environmental consideration
Services
Pipe Pile Installation
Steel pipe piles provide deep foundation support for structures requiring settlement prevention. Utilizing patented compact equipment, we install pipe piles in diameters up to 8 inches for residential underpinning and commercial foundation support. This method offers advantages including reduced equipment footprint, faster installation compared to traditional methods, and suitability for challenging access conditions while maintaining structural integrity.
Shoring Walls
Engineered shoring wall systems stabilize slopes and excavations using steel I-beams or pipe piles. Our solutions address seismic concerns, liquefiable soils, and adjacent property protection. Patented installation equipment enables precise pile placement with minimal vibration, making this method ideal for environmentally sensitive sites and urban environments where traditional cast-in-place walls prove impractical due to space limitations or soil conditions.
Helical Anchors
Helical anchors provide tension and compression load support for foundation systems and shoring walls. Available in 2-inch diameter configurations, these screw-in anchors offer advantages including vibration-free installation, immediate load capacity, and spoil-free operation. Ideal for underpinning existing structures, stabilizing slopes, or supporting solar panel arrays, our system includes load testing capabilities and engineer-approved designs for critical applications.
Manta Ray Anchors
Mechanical Manta Ray earth anchors deliver slope stabilization and structural anchoring solutions. Using pneumatic jackhammer installation methods, these anchors achieve capacities between 1,500-20,000 lbs depending on soil density. Applications include shoring wall reinforcement, stream bank restoration, and anchoring large woody debris. Our certified installers provide system design assistance and equipment rentals for client-managed projects requiring environmentally sensitive installation techniques.
Solar Panel Support
Pile-supported solar panel installations combine economic efficiency with environmental responsibility. Using pipe piles, I-beams, or helical piles eliminates concrete excavation requirements, reducing installation time and environmental impact. Our specialized equipment handles array configurations from single panels to multi-megawatt commercial installations while maintaining optimal panel alignment and structural integrity for long-term solar energy production systems.
Questions
What types of foundation solutions do you specialize in?
We specialize in pipe pile installation, shoring walls, helical anchors, and solar panel support systems using patented compact equipment for challenging access sites.
Do you handle both residential and commercial projects?
Yes, we service residential underpinning needs and commercial deep foundation systems across Washington and Oregon with tailored solutions for each project scope.
Can you work on environmentally sensitive sites?
Our equipment and methods minimize environmental impact, making us ideal for projects in critical areas while maintaining compliance with regulatory requirements.
Do you offer equipment rentals?
Yes, we rent Manta Ray anchor installation equipment and provide 2-inch pipe pile materials with associated couplers for client-managed foundation projects.
What areas do you service?
We operate throughout Washington and Oregon with branch locations in Kent, WA and Vancouver, WA strategically positioned to serve Seattle and Portland metro areas.