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 best type of physician to consult with about this is an OBGYN. The placenta is the structure that links the maternal uterus with the growing fetus. The placenta begins forming at the point of implantation, which is about 8 days after the point of conception. Nutrient exchange between mother and fetus begins at this time, though the circulation of the placenta does not fully develop till the end of the first trimester. Unfortunately, there are no clear guidelines to say when during the pregnancy consuming alcohol is or is not harmful to the fetus.