Maximum limitation slope to inferior pavement structure (Subassembly Composer)

[quentin.marquette.freelance]

Dear folks,

One customer of mine is seeking to create a multiple pavement subassembly (PKT), but we are facing to a lack of knowledge about maximum slope and superelevation definition.

Here in the first (and simplified) case below, we tried to fix maximum slope at 4% for the L6 link. A input parameter “PENTE” is reaching the L1.slope. If this input value is superior at 4%, the L6 link must stay at 4% (we suppose the L5 depth is enough to fill material on site). Degree’s liberties are available with offset and elevation targets on P2.

We tried to implement a decision following two approches:

• With math.abs(PENTE)>4% formula,
• With generic definition of slope (∆y/∆x) comparing to CType(Pente,double).

Nothing is functioning. We thought to use a math.max(double1,double2) comparison but not allowed with VB Casting Expression. Forcing values with variables do not affect also.

I have a lack of idea now. Any thoughts?

We must take in consideration the superelevation calculation also.

Please find enclosed a quick draft of PKT with math.abs(PENTE)>4% formula.

Thanks a lot!

Best regards,

Q.

[M_Obradovic]

Hi, as I understand well L6 slope depend of L1 slope and cant be more than 4%. 
I hope that you can solve it by simple equation

IF((L1.slope<0.04),L1.slope,0.04).