Many structures that have been constructed on gypsiferous soils have big problems, especially in drying-wetting sequence, contrast of construction on non-gypsum-soils due to the collapsibility of gypsum. These soils are formed by the evaporation...

Soils are unconsolidated materials that are result of weathering and erosion process of rocks. When water content of some soils change, it makes problems to civil activities. These problems include swelling, dispersing and collapse. The change...

The collapse of Persian pronoun in different social context...

of tall buildings in recent years increase the potential

of Qanats collapsibility in this area. In this paper the distribution of Qantas system in West of

Mashhad and their stability’s under different loading and support system conditions...