Michael,
You mention you are building a mixer. Is it a tow mixer? If it is, take the break shoes out of the hubs. I built a towmixer 9 years ago, and made 50 or so batches with it during the summers then one day I had a load in and was going down the driveway when one of the tires seized up. Since I had used it a couple of years without checking wether the differential was full of oil I thought Uh Oh I have a bad bearing. Well I wanted to re-make the mixer anyway so my tub was closer to the ground, so I tore the whole thing apart to the bare axle and started to remove the suspect side to replace the bearing. I ended up having to use a "hot wrench" on it because I couldn't get the brake drum off without heat. I had to beat it all the way off and there was not a thing wrong with the bearings it was a dragging shoe that was causing the problem. With a tow mixer attached to the vehicle you don't need breaks anyway so take them out to prevent future headaches. Also, after all your welding is done, find the vent hole and use it to completely fill the cavity with oil. Since towmixer speeds are rarely over 10 mph any rear end will last a lifetime if the oil is checked sporadically.
When you say no structural support, do you mean the PC needs none, or you are not putting any in the wall? If you are asking if you want to know the thickness of a PC wall that will support a roof, then there are a number of questions you must ask yourself. How do you anticipate delivering the stress of a roof to the foundation? What kind of foundation are you using? How much insulation do you need? Is this going to be a lived in structure? Do you live in a high wind, snow, heavy rain area? In order to answer your question well, these details would be important.
Good luck with your project, and send us pictures.
Ron
From: michael joyce <mojojoyce@yahoo.com>
To: "papercreters@yahoogroups.com" <papercreters@yahoogroups.com>
Sent: Tuesday, July 24, 2012 9:26 PM
Subject: [papercreters] pannels
I am looking to make 8' wall panels and was wondering what was the thinnest you could make them and not be breakable, no structural support just for walls. Also wanted to know what to put under the pour, just garden mesh or plywood bottom. Am building mixer with fiberglass tank will send pics when done. Thanks Michael south TX.
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