Hello!

For a homework assignment I had to determine the force vectors at the top of the pylon of a pylon bridge. (I did that)

Then I had to determine the moment on the underside of the pylon. (I did that)

But I can not solve the following question:

The moment on the underside of the pylon is far too large. This is to be solved by making the pylon inclined. What should the position of the pyramid top be to get moment balance at the bottom?

I thought myself to think of a comparison where the moment equals 0.

But I do not come here, can anyone help me with this?

Below an illustration for clarification.

The 8 cables are connected every 20 m from x = 20.

And in the top of the pylon.