The circumference of a circle can be divided into equal parts with a calculator. This will allow you to make proportioned shapes within the circle. For example -stars, triangles, octagons, etc.
To find the divisions, multiply the diameter of the circle by the following multipliers.
| Division | Multiplier | Division | Multiplier | |
| 3 | .86603 | 8 (Octagon) | .38268 | |
| 4 | .70711 | 9 | .34202 | |
| 5 | .58779 | 10 | .30902 | |
| 6 | .50000 | 11 | .28173 | |
| 7 | .43388 | 12 | .25882 |
For example:
21.166" x .38268 (from above table) = 8.099"
21.166" x .38268 (from above table) = 8.099"
 |
6. Board Feet: A board foot is essentially a measure of wood, figured on the called size, not the actual finished size. Therefore a 2" x 4" x 8" contains 5.33 bd. ft. The theory is that you pay for what the mill started with before the wood is dried and planed.
Thickness" x Width" x Length in feet, divided by 12 = board feet. T" x W" x L" ÷ 12 = Board ft.
Thickness" x Width" x Length in inches divided by 144 = bd. ft. (T" x W" x L") ÷ 144 = Board ft.
No comments:
Post a Comment