This thesis starts with an introduction of different 3D printing technologies and then focuses mainly on Fused Filament Modeling and Fused Filament Fabrication. The procedure of preparing a 3D model using slicing software Slic3r to create layers from the model is written in detail (generating g-code). Hardware of a 3D printer using Fused Filament Fabrication technology is described, along with materials used for 3D printing with such technology. Explanation of technology, procedures, equipment and materials leads to a demonstration of 3D printed objects, produced for purposes of this thesis to show how the technology may be used in civil engineering. Strength of 3D printed objects is also considered in this thesis. Contour Crafting technology, patented at University of Southern
California, is described to show how 3D printing may be used for production of large scale buildings and structures.