This won’t help you for this case Judith but for the future if you are planning a heavy attachment on a wall like kitchen cabinets or something you can nail some short pieces of 2x4 together in a “T” formation and place them in your slipform with the wide part to the inside of the wall in the area where you want to hang the heavy item. When everything hardens and the forms com off you will have a nice anchor point.
For this situation you likely want the anchors that are a screw with a metal sleeve around it that crumples and gets fatter when you tighten the screw. The wingy things made for drywall won’t work since they need an open cavity behind the drywall to flip open. For the weight you’re talking I don’t think the plastic ones will cut it. Look for anchors that are designed for concrete walls or plaster walls.
All the Best
Nick
From: papercreters@yahoogroups.com [mailto:papercreters@yahoogroups.com] On Behalf Of JUDITH WILLIAMS
Sent: March-22-12 9:01 PM
To: papercreters papercreters
Subject: [papercreters] Attaching things to papercrete walls
I did really well in getting the cement in my mix down to 1/2 bag per 200 gallon mix. Now that I am ready to hang a shelf I am worried it might be too heavy for the wall. The screws may pull out. I have been thinking of all sorts of different ways to make sure the shelf doesn't fall down. I even looked at some of those fancy fasteners but don't know what to buy. There are some that have a plastic part the goes into the hole first and some that have little wing thingies that stick out if you put them into drywall. I also thought I would glue a decorative piece of punched tin to the wall behind where the brackets will go. I just don't know, but I want that shelf up there soon. It's a 2x12 12 feet long to span an entire wall. I have 4 beautiful cast iron brackets to hold it up.
Follow progress on the new project at http://www.papercretebyjudith.com/blog
More papercrete info at http://squidoo.com/papercretebyjudith
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