Post occupated buildings have formed a subject examined by several architectural studies and arose in their concluion the importance of suitable designing concepts that promote the efficiency of its use arose these ideas into light was greatly envisaged in the university libraries’ buildings in general and their reading spaces in particular, which dominate real interaction among their designing characteristics and users’ preferences.The research discusses the significance of what have been mentioned above and the reality of knowledge related to it in the architectural reality to extract the special problem related to the designing factors that are invested by designers in reading spaces which have an influence on increasing their use efficiency.
Evaluation of several previous studies has led to identifying knowledge deficiency and thus the research problem was represented by unclear theoretical knowledge which determines and describes the set of the affecting designing factors in the usage efficiency and determining its aim by revealing it. As to its methodology; it was represented by building up a theoretical framework included two major aspects one of which discusses the designing factors regarding the reading space; whereas the second includes the variables regarding the usage efficiency. Then the theoretical framework was applied in the field aspect on selected models from the libraries of the university of Mosul and determining the research population among users.
Conclusions have shown an evident variation between the effect of the designing factors on the use efficiency such that enable the designer investing, activating and determining the priorities of future designing treatments.
Keyword: Usage efficiency of building .