Khanqah of Sultan Ibrahim Khorrambid is a unique relic of the Timurid period. This building has exquisite stucco decorations, combined stone and tile decorations, and mosaic tiles. The building has a central domed chamber (gonbadkhaneh), the dome of which almost completely collapsed due to the earthquake and only a small part of it remains. Considering the climatic conditions, public expectations, and the need to preserve the decorative elements, reconstruction of the dome is deemed necessary. In the reconstruction of the dome, there are obstacles such as the weakness of the existing structure, the type of structure to be reconstructed, and the style of the dome. In this study, three methods for reconstructing the dome have been proposed: constructing the dome with bricks and implementing a wooden ring in the arch, implementing a combined metal and brick structure, and implementing the dome with a wooden structure. Considering that a small volume of the dome remains and on the other hand, preserving the decorations is important, implementing the dome with a light structure (the last case) is suggested.

The creativity artistry in using plaster alongside other materials to decorate buildings has long been of interest to architects. Brick and plaster are two materials that have created various forms of decoration together, and this study examines the technology of various types of these techniques. The enormous Soltanieh Dome is one of the most important mausoleums in the world, and plaster is the dominant decoration in this building. One of these decorations is the combination of plaster and brick, which stands out as a physical decoration. How this type of plaster decoration emerged, examining the various methods of its implementation, and the method of creating decorations independent of the  combination of brick and plaster are among the topics of interest in this article. The research method is based on the analytical-descriptive method. Data collection is based on objective observations and the author's workshop experiences, using books, documents, and articles on plastering techniques in Iranian architecture. In the studied example of the Soltanieh Dome, the creation of a common type of these  decorations during the Ilkhanid period is depicted on the wall. In some parts, these decorations are only on the joints and next to the bricks, and in other parts, they are worked on the entire surface of the bricks and with brick patterns. During the restoration and reconstruction
of some of these decorations, the techniques used in creating the designs have been understood, so that plastering in situ for the joints is the artist's first priority, and after the joints are covered with plaster, the decorations are applied. The use of paint, which complements the implementation of these decorations, helps to define the boundaries of the brickwork, as the presence of red ochre pigment, yellow ochre pigment, and carbon black has been partially proven in this building.