For example, those single taxpayers with $5,000 of Social Security benefits in the example above would see their marginal tax rate on nonâSocial Security income boosted by 50 percent if their modified AGI was between $25,000 and $30,000 and by 85 percent if their modified AGI was between $34,000 and $36,000.
Three types of vault were commonly used: the barrel-vault, the groined or four-part vault, and the dome. The barrel-vault was generally semi-cylindrical in section, and was used to cover corridors and oblong halls, like the temple-cellas, or was bent around a curve, as in amphitheatre passages.
1 Segmental Domes (semi-sphere) (these two types are from Roman architecture-style) 3. Simple Dome 4. Compound Dome 5.Dome with Circular drum (these two types are from byzantine architecture-style) 6. 2  Dome vaults (this style where used it some gothic cathedras by using a ribbed vault as a dome). 3  13. This is in contrast with the Romanesque style, which developed the vault in Western and Northern Europe. 2  Byzantine architecture innovated the pedentive domes Which provided the Byzantine architects with a unique way of adjusting the circular form of a dome roof to a square or polygonal plan.