Journal of Architectural Engineering Technology AbstractProviding appropriate housing for the people is one of the responsibilities of the governments such as Islamic republic of Iran government. In recent years the government decided to implement the mass housing for low-income households, that this project was called "Mehr housing". The aim of current research was evaluation the satisfaction rate of Mehr housing residents in Ardabil city, northwest of Iran. Heads of 120 household residents of Ardabil Mehr housing were selected randomly and asked some questions about characteristics of households and level and general aspects of satisfaction according Van Poll's model and social factors. Residents were generally dissatisfied with the most of surveyed indicators such as cultural status, housing cooperatives function, Maskan bank function, accessing to city center, lacking facilities out of unit, lacking area for vehicle parking and costs issue. Majority of the households stated that their housing problem has not been resolved by the Mehr housing. In contrast, good quality of internal conditions, security of complex building open space and social participating of residents were reported as the main advantages of the sites.

PurposeSocial stress is a psychological and biological pressure that stems from one's relationship with others in social environments, which has become the most serious humanitarian issue today. Learning environments are one of the most important environments for reducing or increasing social stress and concentration. This study aims to investigate the effect of classroom wall color on students' stress and concentration in four common types of classrooms.Design/methodology/approachThis research is a survey of 275 university students with an age range of 20–24. The methodology is a combination of quantitative and qualitative research. Data analysis was performed by multiple variance analysis and the internal reliability of the questionnaire was calculated based on Cronbach's alpha.FindingsResults show that classroom wall color has a significant effect on student stress and concentration. In class type one, wall color had an effect of 10.4% on stress and concentration; in the second type, this variable had an effect of 8.8%, also in the third type it had an effect of 7.3% and 8.8% in the fourth type.Originality/valueIt can be concluded that wall color has an effective role in understanding the level of stress and concentration of users in the classrooms, and considering this factor in designing classrooms improves students' behavior and the quality of education in learning environments.