The systemic circulation is the portion of the circulatory system is the network of veins, arteries and blood vessels that transports blood from heart, services the body's cells and then re-enters the heart, the Mayo Clinic noted. [Image Gallery: The BioDigital Human]
A southern pine (2) 2x12 beam can span 8 feet when supporting joists spanning a maximum of 14 feet, and it can cantilever 2 feet beyond the posts on each side. With the allowable cantilever of the joists, this beam would support a deck 12 feet by 17 1/2 feet.
It is expressed as a ratio. L = length divided by a number. The larger the bottom number the stiffer the member will be. If you set a floor joist to L/360 (a common value) it will be allowed to deflect (bow or bounce) a maximum of 1 for every 360 (30') of span.For a 14' span that would be less than 1/2.Long span joists and engineered I-joists usually recommend 1/480 for deflection, but 1/360 is normal code minimum. None of this is a question of strength, only bounce-and that is a bit of a personal opinion. = length divided by a number. The larger the bottom number the stiffer the member will be. If you set a floor joist to L/360 (a common value) it will be allowed to deflect (bow or bounce) a maximum of 1 for every 360 (30') of span.