drawing it 3 dimensionally
A scaled drawing (blueprint)
Depends on what you're drawing.
Most drawing pins looked hike brass. Brass is not magnetic? Why do you think drawing pins are attracted to a magnetic?
i dont know how to
Chalk.
A 3D drawing is a three dimensional drawing. There are a number of ways an artist can convey dimension in a drawing. Perspective is one of them. Shading and contouring are others.
there are several different types of lines used in dimensional drawing, most are vertical and horizontal in design.
It is difficult to plot in three dimensions on a 2 dimensional paper. When I picture a three dimensional plot I think of three intersecting planes and the points suspended in the appropriate area. Imagine drawing a house on a corner. Place the points as though you were drawing the windows of that house.
THREE DIMENSIONAL DRAWING OF STRIP FOUNDATIONS
An underline on a dimension means that it is not to scale.
To convert from 2 dimensions to 3 dimensions requires adding a third dimension: If you start with a zero-dimension point and pull it out in a direction, you create a one-dimensional line as you go. If you now take this line and pull it out in a direction perpendicular to it, drawing lines between the end points you create a two-dimensional rectangle as you go. Now if you take the rectangle and pull it out in a direction perpendicular to the plane in which it lies, drawing lines between the corresponding vertices you create a three-dimensional cuboid as you go.
The answer is the surface
When you draw (like on a piece of paper) it is always 2 dimensional. Sometimes, a drawing may appear 3 dimensional, and that is called pseudo-3d, but it is still a 2 dimensional drawing.
NTS
The first dimension string on an architectural drawing should begin at the point representing the starting reference point of the dimension being measured. This point is typically indicated by a small arrow or dot.
isometric drawing
No, then it would not be a reference dimension. Reference dimensions by definition have no tolerance.