Most pools begin with the liner, and they can be made from vinyl 2 or fiberglass 3. The vinyl 2 is the least expensive with a standard cost of $25,700. The fiberglass 3 bump up the costs to $31,400 on average. There are also concrete and gunite 4 pools that require around $29,600 to $50,000 to install.
The average birth weight for babies is around 7.5 lb (3.5 kg) , although between 5.5 lb (2.5 kg) and 10 lb (4.5 kg) is considered normal. In general: 1  Boys are usually a little heavier than girls.
Most babies double their birth weight by 5 months of age and triple their birth weight by the time they're 1 year old. The average weight of a 6-month-old is about 16 pounds (7.3 kg), and the average weight of a 1-year-old is approximately 21Â½ pounds (9.8 kg).