Otto Rosenau & Associates, Inc. (ORA) is a full service geotechnical engineering and construction inspection/materials testing firm in Seattle. The company was first established in 1954 as Herman Adalist & Associates, Inc. and in 1973, the corporate name was changed to Otto Rosenau & Associates, Inc. Since then, the Rosenau family has led the company to become one of the top testing and inspection agencies in the Greater Puget Sound region.
As an independent approved agency, we provide objective and competent assessment for numerous projects ranging in size and scope from roadways and bridges to custom residential homes and large complex commercial structures. We continually work with developers, municipalities, public and private entities, homeowners, non-profit organizations, and etc. to help assure conformance to specifications, building codes, and standards.
While we generally focus on projects in the Greater Puget Sound region, we have provided quality assurance and quality control services for specialty projects in Oregon, Canada, Alaska, South Korea, and Japan.
Services
As an independent approved agency, we provide objective and competent assessment of your project.
Special Inspection and Materials Testing:
• Soils and Foundations
• Grading: Asphalt Compaction
• Concrete: Reinforced Concrete, Pre-Stressed Concrete, Post- Tensioned Concrete, Light Strength Concrete, Shotcrete, Augercast
• Piling, Reinforcing Steel
• Masonry: Reinforced Masonry
• Steel: Structural Steel Fabrication, Structural Erection, Steel Decking, High Strength Bolting, Welding
• Nondestructive Testing: Ultrasonic Testing, Magnetic Particle Testing, Liquid Penetrant Testing
• Seismic
• Spray-Applied Fireproofing
• Roofing
• Lateral Wood & Framing: Anchor Bolt, Holdown Installation, Epoxy Grouting, Shearwall Nailing, etc.
Geotechnical Engineering:
• Preliminary Site Evaluations: Geological Setting, Environmental and Geologic Hazards, Soils-Related Design and Construction Challenges
• Develop and Direct Subsurface Exploration Programs: Test Pits and/or Borings, Quantity, Location, and Depth, Hollow-Stem Auger or Mud-Rotary Borings, Groundwater monitoring Methods, Bulk, Split-Spoon, or Thin-Walled Tube Samples
• In-House Laboratory Testing: Index Properties, Shear Strength, Moisture/ Density
Engineering Services:
• Conventional Shallow Foundation Systems, Deep Foundation Systems, Foundation Repair Systems, Slope Stability Analysis, Slope Stabilization, Excavation and Shoring
Locating Services:
• Subsurface Interface Radar Investigation
• Pachometer
• Metrotech
• Boroscope with Digital Imaging
• Video and Remote Imaging Camera
Specialties & Consulting:
• Floor Flatness & Levelness Testing
• Waterproofing Inspection
• Moisture Testing
• Relative Humidity
• Windsor Probe & Schmidt Hammer Testing
• Coating Applications Inspection – Wet & Dry Mill
• Pull Testing
• Brick Shear Testing
• Crack Monitoring
• Video Documentation
Categories:
Engineers | Residential Plans and Permits | Residential Concrete | Home Projects | Home Additions | Residential Specialty Contractors | Laboratories | Additional Home Services
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