Shape of Arch Dam

Hi everybody,

I research any documents concerning the special shapes of arch concrete dams.

Generally the downstream and upstream shapes are based on logarithmic spiral and I think GS is very appropriate to define a parametric approch to this shape design. I have already tested GS with 3d spiral, it's looks great, but my model haven't the real design of existing dam because of my lack of datas.

So if you have any documents about arch dam geometry, GS developpements, that you can share, i will be very grateful.

Many thanks