I ussually hang out at Breaktime, but was advised to post this question here.
I have approximately 1000 bf of hickory,oak,and ash band sawn lumber. I am going to build a solar drying kilm about a 10×14 ft. footprint. The basic structure will be built on 4×4 post and the floor elevated about 16 inches above the ground. i need to have a rough per square foot weight of green hardwood in oder to figure my joist size and spacing.
Has anyone here built such a beast, or can anyone give me a reasonable number to use for the loading calculations? I have 33 more mixed spieces logs to be sawed, so this puppy is going to get a workout.
Thanks, Dave
Replies
You could use 50 lbs per cubic foot. Think about it this way. Most freshly-cut logs from North America will float in water, but just barely. Water weighs 64 lbs per cubic foot, so things that float in it have to weigh less.
The Virgina Tech Forestry Department hasfree plans for a solar powered kiln that can be made of plastic tarps.You might give them a call. They are located in Blacksburg, Va.
Frank
I have about half of the 1000 bf stickered under tarps in the field by my shop now. The stack is setting on a plywood floor nailed to treated 4x4s. It is not wrapped tight and has been a real pain to keep cover whenever there is a big storm. Over all, however, the plastic wrap has worked fairly well for keeping the weather off of the stack. It is a zero for keeping out insects and other vermin that want to call it home. A gray fox even made its' borough under the floor. That cut down on the voles, mole and field mice, but elevated my pucker factor when I startled it the other day.
I'll look into the U of V design. see if it solves those problems.
Thanks, Dave
Thanks Jamie. If I use 50 lbs./cubic ft. and figure an 8x12x4 ft stickered stack it comes out to about 110 lbs/sq.ft. That is using 80% of the actual cubic foot weight calculation. Just a guess that stickers and spacing between boards will reduce the total mass by 20%.
Does this sound about right?
Dave
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