Cover patterns Strategies for Exposed Spaces in the Historic Districts of Yazd

This study aims to explore cover patterns strategies for the exposed historical places in Yazd, central Iran. The dimensions and types of patterns employed in adapting historic structures to modern life were investigated by using analytical-descriptive and interpretive-historical methods. The results conveyed that there are three patterns as appropriate to different climates and ecologies. Summer patterns is suitable for shading and includes fixed or movable structures. Winter patterns is fixed and is used in cold seasons. Supplementary solutions including shades can appropriate them for warmer seasons. And all-season patterns are retractable and can be folded or unfolded as climatic conditions might require. The last strategy seems to be superior, but it is time-consuming and expensive. Retractable patterns are most appropriate in the case of historic structures as the modifications they require are minimal and their construction materials are different from those employed in their contexts. Several factors should be taken into consideration in selecting patterns for the historic districts of Yazd that include the distance between supporting bars, budget, the historic value of the covered structure, its essential functions, the functions of the open space during daylight and nights, maintenance, and the consistency of the existing structures to support roofing. “Poosh” can prove to be an appropriate cover for historic structures with religious functions during all seasons. As a traditional solution, its use must be maintained as it supports community sustainability while its employment in other contexts should be restricted. It should also be mentioned that all-seasonal, some summer and few winter patterns require minimal contextual modifications in the hitoric structure that is being sheltered, while they can facilitate easier and more comfortable access.