Here I created the ramp and expanded one part of the pyramid so that you will see how it is constructed. You might have noticed some more loop cuts beside the ramp. I left them as I intend to use them for more details.
I noticed that this way of building up the model might not necessarily work in all situations. For example, I spent more time cleaning up the model and creating the simple ramp due to it being exactly in the middle and split in half.
I would appreciate your comments and feedback.