Spreadsheets are becoming increasingly popular in solving engineering related problems. Among the strong features of spreadsheets are their instinctive cell-based structure and easy to use capabilities. Excel, for example, is a powerful spreadsheet with VBA robust programming capabilities that can be a powerful tool for teaching civil engineering concepts. Spreadsheets can do basic calculations...

redbud (cercis griffithii) is an iranian native species that plays a crucial role in protecting soil and water in zagros forestsareas. although many reforestation projects of this species in this area were unsuccessful, the restoration of redbud must continue using new applied studies to help conserve this precious resource. this can be achieved through increasing the quality and quantity of se...

no-bahar watershed is located, south of khorasan razavi province. geologically, the study area is a part of central iran zone. the rock units are late mesozoic and cenozoic in age in this watershed. no-babhar watershed includes several channels, which among them, only two main channels, motr-abad and solh-abad, have been studied. these rivers are mostly, braided channel in style, with high grad...

block-flexure is the most common mode of toppling failure in natural and excavated rock slopes. in such failure, some rock blocks break due to tensile stresses and some overturn under their own weights and then all of them topple together. in this paper, first, a brief review of previous studies on toppling failures is presented. then, the physical and mechanical properties of experimental mode...

Abstract The aim of the study was to assess possibility using empirical formulas determine roughness coefficient in gravel-bed streams, bed slopes which range from 0.006 0.047. Another impact taking into account conditions non-uniform flow on application these and develop correlation relationships between water surface slope also friction order estimate n streams. studies were conducted eight m...

Stability of reinforced slopes is almost always carried out using limit equilibrium methods and controlled by the shear strengths of the slope materials and the extension force of reinforcements. According to limit equilibrium methods, the stability of slopes is assessed by dividing the whole failure wedge into several vertical elements. In order to determine the safety factor of the reinforce...

in current paper, geometrical relationship between the longitudinal faults of a zone of the folded zagros, surrounding asef mountains (north of shiraz) that follow the northwest-southeast structural trend (eg. zarghan, katah and sadra faults) has been studied. a western and southern zone of zagros mountain chain called folded zagros has a length of about 1375 km and a width between 120 and 250 ...

The sediment deposited by debris flows in rivers is a common cause of mountain disasters. deposition characteristics are strongly affected the entrainment during transportation process and water depth river channel, but how poorly understood. Here, effects released flow volume, density, bed on investigated for total 22 different tests. Detailed topographic surveys deposit lobes conducted using ...