With an advance of science and mathematics, the typology of the Tiffany Ring on sale mosque is translated differently in three dimensional construction rather than plan view in two dimensional construction. A study conducted by Erzen (2004) indicated the mosque's main feature which has a design with the 'dome's roof cover' system and she noted that its attribute of ' centrality ' deserves to be given a special attention. In a review of Erzen's book, Margolis (2004) agreed that this roof cover denotes the dome and the roofing system of the mosque. He argued that according to this book, the dome and all the roofing system can be figured as a 'distinctly' separate part of the Ottoman mosque before 1540 AD, which evolves later when Ottoman architecture reached its maturity era.The main attribute of pendentive dome's construction is that it does not require column and beam construction. The upper dome is supported in either ways, by round arches or a dome-base structure. The upper dome can be constructed on the arches instead of being directly constructed on the ground (Pasic & Siravo, 2004 and Unsal, 1973). The pendentive dome has sphere form with the space beneath it a square, circular or octagon plan shape. If the space is asymmetry along one of the X-X or Y-Y axis in a cartesian coordinate system, then the dome has an elliptical form. Corbelling, squinches and Tiffany Pendant on sale of triangles are conventional methods to fill the space between the upper dome and the supporting arches. The other method of constructing pendentive dome is using dome-base structure. This means that the upper dome locates on top of the base dome. The head of the base dome is cut and the upper dome is replaced as the lid (Figure 2).Svenshon (2009) found that mathematical models had been extensively employed and there are meaningful relationships between each square and circular component of such constructions. Each part is proportionate to the other part. The height of the dome and supporting vaults in addition to the radius of dome and the square space beneath it can be revealed and expressed by numbers and their relation can be explained through formulas.
Moreover, the domes are also studied in terms of their structural features (El-Sheikh, 2000). This includes the material and the cost of construction. This study assumes that the mosques in early Ottoman period can be classified into categories in which certain characteristics are in common. Therefore, this study aims to offers a novel typology of classification of Ottoman mosques in reference to the dome from sectional analysis. It gives credits to the dome design as the main criterion of classification and seeks the influence of the dome on the whole design from the section view.This study uses qualitative research. It uses documentaries for classification of the mosques. This method is usually regarded as Tiffany Note on sale method of analysis of documents and materials (Marshall & Rossman, 1998). This study investigates evolution of Ottoman mosque in reference to pendentive dome from sectional analysis. It narrows down its scope to solely mosques which were constructed. Hence, those of which has been altered to a mosque from a church or temple origin are excluded. This study undertakes conformability test as all descriptive analysis requires validity test and conformability is among the tests to validate any analysis (Cuba & Lincoln, 2005). To describe a group norm, it investigates and exemplifies more than 51 mosques aged for more than 250 years between 13th and 15th centuries as the testimonial to support the concept of classification for each category. All of the selected mosques are from the same region known as modern Turkey today. The dates refer back to the establishment of Ottoman Empire in early thirteenth century until the late of second half of fifteenth century.
Then Ottomans started a new era called golden ages when construction of buildings was more luxurious and grandeur. Although this era has good example and more well-known buildings, but the early period must be acknowledged for studies dealing with the origins of Ottoman architecture. Thus, the proper period for this study which concerns the roots and forming ideas of what called Ottoman architecture is the first period.The data is gathered from the available documentaries of mosques including plans, sections, photos and published manuscripts. The other method for ensuring all important and key Tiffany Necklace on sale given attention is using some scholarly works about mosques in the same period e.g. Kuran's book (1968) titled 'The Mosque in Early Ottoman Architecture' . The classification of mosques is elicited based on the main dome of mosques in section view. The collected data could be classified in five categories in line with the classification from the plan analysis. The section analysis refers to the section made by the vertical axis of the mosque. If the section view is the mere source of classification, it could cause incorrect understanding of the whole classification system. This is because a nuclear mosque and an earring mosque have almost same characteristics in the section by the vertical axis while they are different in plan and 3 dimension construction. This prompts bearing in mind that the classification from the sectional analysis should follow the classification from the plan view. Nonetheless, if though the classification does not follow the plan view the actual result will not be changed.
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