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What is the difference of a cereal box that measures 2X6X8 and one that is one inch bigger on all sides?
The volume of the larger box is 96.875% more than the volume of the smaller one. It also has 46.1% more external surface area on which to print advertising.
What is the weight per foot of 2 x 4 Douglas fir board?
The answer depends on the moisture content. An "average" weight of a board foot of Douglas-fir, which is not one specific tree but one of about a dozen different trees, is about 2.8 to 2.9 pounds per board foot. You could make a quick calculation based on that. And don't forget that a "2 x 4" is not really 2" by 4" in size. Dimensional lumber can be notoriously tricky to pin down. There is a shrinkage factor, too, darn it. The "real" size of a 2 x 4 is about 1 1/2 x 3 1/2 (and please don't split hairs here) from the lumber yard. In that case, a foot of this material weighs in at between 2.8 and 2.9 pounds, give or take.
What do kiwis gro on?
Kiwi's grow on a trellis system. A trellis can be built any number of ways, there is not a one right way to build it. However, one must keep in mind that a kiwi vine is VERY vigorous. It has been known to pull a roof right off of a house before. So, I built mine like this. I used 4 - 4x4x10 (four inch by four inch by ten feet long), and I designed a walk-way. (4 corners, with a 2x6x8 (two inch by six inch by 8 feet long) board on the end (short ends) and bolted the two 4x4's on the ends together. with 2 - 1/2" through bolts and nuts/washers for each post. I did the same on the other side. I put the posts 2 and a half feet into the ground, and set them in concrete, so that the height of the ceiling would be 7 and a half feet tall. (Makes it easy for me to prune and to walk through being I am 6 feet tall.) I spaced the width of the walkway to be 7 feet wide. I then ran some heavy duty steel cable from end to end long ways (approximately 20 feet long), and drilled holes through the 2x6's to run the cable through every 12 inches across. You can secure the end multiple ways. I bought threaded cable so the ends would received nuts and washers. That's one way to do it. Again, you can build a trellis system in a number of ways, it doesn't HAVE to be like I built mine. Just make sure that the vines stay on TOP of the trellis, instead of wrapping around it, and if you are in doubt of how strong your trellis will be, over-build it a little bit. Don't under-estimate the strength of the kiwi!
