BUILDING PLAN SHEET SIZE. In order to facilitate the review of building plans and inspection in the field, building plans must. have a degree of standardization. One aspect of standardization is plan sheet size. Plan sheet sizes ranging from 36 wide x 24 high to 48 wide x 36 high are the most. manageable.
Rh incompatibility is a condition that occurs during pregnancy if a woman has Rh-negative blood and her baby has Rh-positive blood. Rh-negative and Rh-positive refer to whether your blood has Rh factor. Rh factor is a protein on red blood cells. If you have Rh factor, you're Rh-positive.
Most people have Rh-positive blood, meaning that they produce the Rh factor, an inherited protein found on the surface of their red blood cells. But about 15 percent of the white population and 7 percent of the African-American population lack the Rh factor. These people are Rh-negative. The health of an Rh-negative person is not affected in any way. However, an Rh-negative woman is at risk of having a baby with Rh disease if she conceives a baby with an Rh-positive father and the baby inherits the father's Rh-positive blood type.