Dear Rachid, you can use ...
Published by Hervé Camerlynck
Dear Rachid,
you can use the application Bioroc developed by my company, either on Apple store or Goggle Play:
https://itunes.apple.com/us/app/bioroc/id902463995?mt=8
https://play.google.com/store/apps/details?id=com.sotra.calculdimensionnement&hl=en
It computes and compares the hammering for 3 materials: PVC-U, PVC-O and HDPE.
Best regards,
Hervé