Felix Candela structure Los Manantiales Restaurant at Xochimilco...some problems to solve

Hi,

I'm a bit confused on how to organize this information, so Ok let me start:

the structure I wish to model with grass is a shell made out by the play on the hyparsform

(4 intersecting hyperbolic paraboloids rotated 45° one from another).

1 - I have the dimensions (hight at the centre:5,9m ; at the vertex of the overhhang: 10 m ect)

2- my idea is to model one hypar and copy it after.

3- STEP 1modelling the parabola on the ZY plane knowing one point (x: 6,2; y: 0) and vertex (0 ; 11,5)

4 - rotate the parabola 30° (the structure has a overhang)

5 - model the second parabola known the first parabola vertex and the hight at the center

6 - create a loft surface (?)

7- copy and rotate 4 times

8- trim the extra off

My work so far is a real mess..can someone help me rationalized it in grasshopper instructions? Molte grazie