First draw the details of steel frame according to 1: 1, and then number the steel beams, steel columns, tie rods, horizontal supports, progressive supports and other components according to the layout (according to the size, specification, material, position and shape of the parts plate); 2. After numbering, start to clean the parts plate (from the column body welding to the beam, to the tie rod, support system, and finally to the purlin and gusset) and draw according to the number; Third, if it is a plate welded column beam, numerical control; Is needed; Fourth, add component boards on CNC to form beam and column component drawings and other component drawings; The fifth is purlin, diagonal brace, diagonal brace and corner brace; Finally, sort out the parts list; In this way, the main steel structure is completed; The rest is to maintain the structure. The method is to arrange the plane or facade with maintenance components according to 1: 1, and then draw it according to the specifications of the plate according to 1: 1, and count the specific quantity. If you need to wear it, it depends on the number of people. For the wrapping part, we can only refer to other people's projects or reference atlas, and ensure the waterproof requirements according to the difficulty of production and installation by the construction unit. We can adjust the shape and size by ourselves, and pay attention to the economic expansion width.

The above is my own experience in making detailed drawings with CAD in the past, hoping to help you;

Finally, I hope you can learn to use Tekla software to draw pictures on the basis of knowing how to make detailed drawings with CAD. Because if the software draws pictures, the accuracy is much better than that of CAD, and it can count the list, check the 3D situation and find specific problems better.