This movie shows you how you can take a curve, convert it into a NURBS and use this to create a concrete structure. Using the rotate and mirror tools you can quickly duplicate the first curve, then mirror the resulting concrete structure to create a series of them. When you render the view, you can see the form more accurately.
If you use the model with Camera Match, you can see the model in its context. Camera Match makes it really quick to add your model to a photo.