Mitering an ICF Ledge Corner III
July 27th, 2010 | Common Troubleshooting, Lets Get Technical! | Darryl U, ICF Construction, Ledge Form, mitering a ledge form
If you’ve been reading with us for the last couple posts we are now on part 3 of the ICF Construction- Mitering a Ledge Form tutorial. We decided to get this communicated out there as sometimes it can be tricky in the field if you haven’t done so before. But after you do it once or twice you’ll be a pro.
Altering the ICF Form Teeth
At this point both sides of the ledges are cut now you need to make sure the proper modifications are made in order for forms to stack on top of a regular corner form and a corner form will sit snugly on top. As well as making sure the cavity is conducive to concrete flow and support of the entire ledge.
Notice the raised flat foam areas in the 90-degree corners. The interlocking teeth will not seat all the way down in those locations.
Rasp down half of the height of the interlocking teeth on the interlocking teeth that will bear on the flat raised foam areas so that the ledge form sits down properly on the 90 degree corner.
Now that the ledge form fit snugly on top of the corner form, we need to remove some foam to allow for free flowing concrete. Where the two mitered pieces of ledge form meet at the very corner, trim the foam within the concrete core corbel area at a similar angle of the corbel on both sides.
This opens up the concrete corbel area for sufficient concrete volume.
Cut and remove half of the interlocking teeth on top of the ledge form that will meet the flat raised areas of the 90 degree corner that will stack on top of the mitered ledge form.
Once the mitered corner is cut and dry fit for acceptable appearance and function, glue the mitered cuts together and stack on top of the 90 degree corner.
Lastly, Secure Your ICF Corners!
Use horizontal and vertical wire hooks to secure the mitered ledge form to the immediate straight forms. The mitered ledge could also be taped together to add further support to the glue.
For next post on our Mitering a Ledge Form Series part IV we will go over cutting and placing the one and only xLerator- ICF Ledge reinforcement system. And then we’ll go over BRIEFLY how to do an inside miter cut (The principles are the same, just reversed really)
Miss a couple steps? Start from the beginning!
