TerraCalc was created to fill the technology gap that exists between contractors and their GPS & ATS guided equipment. We offer land surveying services specializing in construction staking, sitework estimating and terrain modeling for electronically guided earmoving equipment. We provide you with all the benefits of having the most advanced construction estimating and modeling software (AGTEK Earthwork 3D, Materials 3D, Autodesk Civil 3D, Terramodel, and Trimble Sitevision Office) guided by professionals with more than 30 years of experience in earth modeling, site work estimating and construction surveying. We have real field experience on real machine control and surveying systems, so we know where and how they excell and what challenges you may face with your project.