“We believe the key to success in our profession is education, communication, accuracy and responsiveness. We strive to achieve all of these goals on every project we’re on. The end result is delivering a quality product and maintaining strong working relationships with all of our clients big and small. ” – Jay Pannell, P.L.S., President, Terra-Calc Land Surveying Inc.
Who We Are
TerraCalc Land Surveying Inc. was created to fill the technology gap that exists between contractors and their GPS & Robotic guided earthmoving equipment. We help you be more productive with greater accuracy and less effort than ever before. Our services benefit the contractor and the owner by using the most advanced construction estimating and modeling software (AGTEK Earthwork 3D & Materials 3D, Autodesk Civil 3D, Terramodel & Trimble Sitevision Office) guided by professionals with more than 30 years of experience in construction layout, earthwork modeling & site-work estimating. With REAL field experience, on REAL machine control systems, we know where and how they excel and what challenges could be faced with each project. We are licensed to perform surveying in Oregon & Washington and hold firmly to the belief that education is the key to success in our profession, and only fully qualified individuals will be given the opportunity to perform work for our clients.
TerraCalc Land Surveying Inc. recently completed 5 major internation airport improvement projects: PDX South Taxiway Rehab,, PDX North Apron Rehab., PDX Airtrans Ph. 1 Improvemts, PDX North Runway Expansion and Hillsboro Taxiway Charlie Expansion. The survey work included layout on a 12.5’x 25’ grid for paving in excess of 2,000,000 S.F. of asphalt to within +/-.01 feet of vertical tolerance. Tight tolerances and accelerated schedules at PDX proved to be a challenge, however, experienced field and office crews combined with finely tuned Trimble robotic total station and attention to detail allowed our company to complete our projects with a 99% paving approval. A feat never attained before by any other surveyor on a project of that scale at PDX.
K. Jay Pannell, P.L.S.
Licensed Land Surveyor Oregon & Washington Owner/Manager, Terra-Calc Land Surveying Inc.
22 years Surveying and Supervision of construction, topo/boundary and topographic surveys.
18 years of providing Digital Terrain Modeling for use in GPS guided earthmoving equipment & estimating purposes
12 years of providing machine control tech. support for Trimble GCS earthmoving systems
B.S. Geography, Oregon State University ’93
H. Gordy Stedman, P.L.S. Licensed Land Surveyor Oregon & Project Surveyor,
21 years of providing Surveying and Supervision of construction, boundary and topographic surveys.
17 years of providing Digital Terrain Modeling for use in GPS guided earthmoving equipment & estimating purposes
11 years of providing machine control tech. support for Trimble GCS earthmoving systems
B.S. Geomatics, Oregon Institute of Tehcnology ’93
Darren Harr, P.L.S. Licensed Land Surveyor Oregon & Project Surveyor,
21 years of providing professional services pertaining to boundary, A.L.T.A., land partitions, subdivisions and topographic surveys.
Associates degree in Civil Engineering Technology, PCC Sylvania ’93
Randy Ratcliff: Crew Chief, 21 years field experience in airfield & commercial construction surveying & topographic/boundary surveys.
Dale Craig: Crew Chief, 8 years field experience in construction, topographic & boundary surveying.
Tyler Ratcliff: Crew Chief: 2 years field experience in construction & boundary surveying.
Where To Find UsTerraCalc Land Surveying Inc. 1615 N.E. Miller Street McMinnville, OR 97128 Office 503.857.0935
Terra-Calc’s services are performed with the utmost confidentiality in mind. All work that is placed on this site for sharing and download is secure and available only to the client.