Unprotected steel and structures exposed to the atmosphere inevitably corrode. For thin-gauged especially, corrosion is critical for stability. Although reduction in thickness caused by insignificant some structures, other unacceptable. Therefore, protection a crucial issue industry. Over last decades, many new systems innovative products have been introduced onto market. Corrosion cold-formed ...

the method of sampling unit was applied according to the importance of the park in urban landscape structure with the initial purpose of planning method to maximize environmental sustainability and recognizing the structural elements within the park. swot technique has been applied to analyze collected data and evaluate the strengths and weaknesses, opportunities and threats of affected areas. ...

in this paper, we have tried to analyze and asses the process of formation and spatial – structural evolution of iranian-islamic cities through tehran case study as well as how to organize and effecting different factors specially modernism on urban elements. also we have discussed about formation and emergence of tehran and the effect of different pre modernism and postmodernism socio-economic...