We can provide 3D model of complete structure, which can be used by surveyor during erection process. 3D drawing of complete structure can be provided in PDF format. Tekla BIMsight, which is a free tool, can also be used to check the complete 3D model of the structure. We provide 3D erection drawings for easy visualization of connections between all steel members. Mark up plan is provided to identify location and orientation of each member. Holding down bolts layout and orientation drawings are also provided.