أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
Po : initial serviceability index, Pt : terminal serviceability index ,PSI: present serviceability index ,PSI = Po - Pt
PSI is a mathmatical measurement for The PSR (Present serviceability rating) , it's related to the riding quality and Po value is taken immediately after the construction of the pavemnet, / usually a value of4.5 is taken for Po and (2-2.5) for Pt on major highways
PO is Initial serviceability index.
PO is considered to be the a present serviceability index (PSI) immediately after the pavement is open.
Its mean that the Initial serviceability index (Po) – Po is considered to be that PSI immediately after the pavement is open. AASHTO values are4.5 for rigid pavement and4.2 for flexible pavement.
هل تحتاج لمساعدة في كتابة سيرة ذاتية تحتوي على الكلمات الدلالية التي يبحث عنها أصحاب العمل؟