M S Zarghamee

Bio: M S Zarghamee is an academic researcher. The author has an hindex of 1, co-authored 1 publications receiving 2 citations.

Longitudinal stresses and strains in design of rpm pipes

Abstract: This is a discussion of a paper of the above title by J.K. Jeyapalan and B.M. Abdel-Magid published in the Journal of Transportation Engineering, May, 1987, Volume 113, No. 3. The discusser comments on pipe failure mode, and on the beam on elastic foundation model. The internal pressure and temperature effects, layered model, and total stress are also discussed. The article concludes with a closure by the authors.

Approche fiabiliste du comportement des canalisations enterrées

Abstract: L'article s'interesse au probleme du comportement et de la securite des conduites enterrees. On presente d'abord les resultats de diverses etudes pathologiques qui ont permis de classer les principaux desordres rencontres lors de l'inspection des reseaux d'assainissement. On evalue ensuite les apports des modelisations du systeme sol-conduite a une meilleure comprehension des mecanismes qui conduisent a ces desordres. Devant les incertitudes qui affectent les nombreux parametres qui interviennent dans le comportement des conduites, une approche fiabiliste simplifiee est proposee pour l'evaluation de leur securite. Ce type d'analyse permet de mettre en evidence les parametres de dimensionnement qui contribuent a augmenter de maniere significative la fiabilite de ces ouvrages.

Characterization of PVC joints' behaviour during variable loading laboratory tests

Abstract: With the objective of defining parameters that can be used to assess the condition of PVC joints in the field, more than two-hundred destructive tests were done in the laboratory. Two diameters (110 mm and 315 mm) of new PVC double-sockets were tested. The occurrence of leakage during water pressure tests, intrusion during vacuum tests and characterization of joint stiffness during rotation were monitored. The results clearly demonstrate that leakage and intrusion do not occur for typical operational situations (angles below 10 degrees) if the rubber ring is in perfect condition. The joint's stiffness increases with the increase of inner-pipe pressure, diameter and with the level of insertion. Insertion plays the most relevant role. The results also show that the condition of a joint cannot only be defined by its angle, but that an extra parameter is necessary: the level of insertion.