Retention of Green Roofs Following the Questionnaire and Its Respondent´s Answers

Questions can provide answers to meet the needs of teaching, knowledge, growth in understanding. However, it is clear that no matter how simple or complex the problem is well clear and relevant question has much greater use to the interviewer as an issue that is vague, poorly defined, or irrelevant. The main idea of this paper is presented with a questionnaire and processing of questions aimed at the retention properties of green roofs. The questionnaire is part of ongoing dissertation dealing with this topic.