If you pour like in Bob's pictures you can leave the forms on till the next layer is poured. If you use slip forms like in my pictures you can see there is a "skirt" on the form. That is there because the next day after all the drainage over the course of a day, the top of the pour will be the driest hence the most shrinkage will have occurred. Placing the forms on this without a skirt enables a lot of slurry to slip through to the ground. With the skirt however, all the slurry will fill and become a stable portion of the wall. In one of the pictures I sent you can see the skirt made of new plywood pointed up on the corner. Either method will produce exactly what you asked about, basically a filled vertical wall.
Ron
From: trendawareness <trendlinesystems@gmail.com>
To: papercreters@yahoogroups.com
Sent: Saturday, December 10, 2011 4:06 AM
Subject: [papercreters] Re: Slip Forming Question
Thank you for the detailed reply.
The drainage from the molds shouldn't pose much of a problem, except around the electrical boxes. I'll probably place some pre-formed PC around those and fill it in a non-conductive insulator.
However there's a thin board between the studs and the exterior aluminum siding. I presume that's water resistant and it won't mind getting damp for half a day or so while the PC cures. If not, should I set in a layer of thin plastic sheeting prior to the pour?
Also, you indicate that the PC will pull back from the forms as it cures. My question is, when I pour on day 2 above day 1's pour, should I leave day 1's form in place to contain the slurry that may back-fill over where day 1 contracted? In effect walking two 1' boards up the wall by moving day 1 up to day 3 and so on?
Thanks again!
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