For example, if you install R-19 fiberglass batts in 2x6 frame walls, with the studs 16 inches on-center, double top-plates, and other elements of standard framing, the actual R-value of the whole wall with the R-19 insulation will be about R-15.
birthplace - the place where someone was born. place of birth. place, spot, topographic point - a point located with respect to surface features of some region; this is a nice place for a picnic; a bright spot on a planet. place of origin, provenance, provenience, cradle.
The placenta grows in your uterus (womb) and supplies the baby with food and oxygen through the umbilical cord. Normally, the placenta grows onto the upper part of the uterus and stays there until your baby is born. During the last stage of labor, the placenta separates from the wall of the uterus, and your contractions help push it into the vagina (birth canal). This is also called the afterbirth.