The Milky Way Galaxy is about 100,000 Light Years across. Each light year is about 63,241 Astronomical Units. An Astronomical unit is the average distance between the Sun and â¦ the Earth, or about 93 million miles. Based on that math we form an equation.100,000x63,241=6,324,100,000 Astronomical units Thats exactly 5.881413 Ã 1017 or 588,141,200,000,000,000 miles.he Milky Way Galaxy is about 100,000 Light Years across. Each light year is about 63,241 Astronomical Units. An Astronomical unit is the average distance between the Sun and â¦ the Earth, or about 93 million miles. Based on that math we form an equation.
The maximum distance a deck joist can span between supports is determined by the joist's dimensions and species, as well as the spacing between joists. The closer the joists are to each other, the greater the distance they're able to span safely. Two-by-twelve Douglas Fir joists spaced 12 inches apart on center, for example, can span 20 feet, 7 inches, but the same joists spaced 24 inches part can only span 14 feet, 7 inches. Cantilever.
1 The length of the joist span: The joist span is the distance between the two supports. The longer the span the weaker the joist will be.  Joist spacing: This is just a fancy way to say how close the joists are installed to each other. The closer they are installed to each other the stronger the floor system will be.