prestructed constructionpretensioned prestressed concretepretensioningpretensioning bedpretensioning loadpretimed signalprevailing windpreventative measureprewetting the soilprimary airprimary analysisprimary compression failureprimary consolidationprimary creepprimary digestion tankprimary highwayprimary highway systemprimary openingprimary pathprimary roadprimary road networkprimary routeprimary route networkprimary runwayprimary sedimentation tankprimary streetprimary stressprimary structureprimary treatmentprimary waterprimary waveprimeprime coatprimerprimingpriming coatpriming paintprimitive stiffness matrixprincipal axisprincipal axis inertiaprincipal canalprincipal curvatureprincipal directionprincipal distanceprincipal hydrometric stationprincipal memberprincipal member of inertiaprincipal nodeprincipal planeprincipal plane of stress