Different Types of Insulated Slabs - GreenBuildingAdvisor
Aug 6, 2021 · The perimeter footing of a thickened-edge slab isn’t very deep. [Image credit: Martin Holladay] A slab with frostwalls has perimeter walls resting on footings installed below the frost line—generally three to four feet below grade. This type of foundation requires concrete to be placed on three different days.
Getting Slab-Edge Insulation Right - GreenBuildingAdvisor
Jul 29, 2020 · The importance of slab-edge insulation at first seems counterintuitive, but the images from Therm offer vivid confirmation of the transfer of heat under extreme conditions. It is important to understand that the impact of slab-edge insulation decreases with depth and insulating the upper portion that is exposed to outside air is the most critical.
Slab edge question - GreenBuildingAdvisor
Mar 18, 2020 · In an Alaskan Slab or Frost Protected Slab, a thickened slab edge allows space for a rebar beam and serves as a footing, spreading the load out over two feet or so. In a slab on grade design, the slab is not structural so no thickened edge is needed. The frost walls take the load (not the slab) and spread it out over the footing.
Prefabricated Foam Forms for Slab Foundations
Oct 15, 2014 · The vertical part of the form is 4 inches thick except for a tapered section at the top. The horizontal leg under the thickened edge of the slab is also is 4 inches thick, while the field of crushed stone in the center of the building would typically be covered with 12 inches of horizontal EPS, La Verdara said.
A Timber-Frame House for a Cold Climate — Part 1
Mar 10, 2016 · A thickened-edge slab. The floating slab was a standard thickened-edge design with 3 inches of 30 psi XPS foam underneath. The site is a limestone outcrop that drains in three directions. (It is pretty much at bedrock.)
In thickened edge insulated slab, I am looking for info
Mar 24, 2016 · The problem with using it in Marty's case is that its natural angle of repose is very shallow, so you couldn't form a 45% slope. it would slough when you walked near the edge or poured the slab. For some years my warranty provider required proctor tests on fill …
Inverted thickened edge slab. Work? - GreenBuildingAdvisor
Nov 3, 2011 · Any stem wall or thickened edge generates insulating or compacting/pouring issues, as far as I can see, especially w/ lots of foam underneath. This one is not perfect, either. Nevertheless, here is an option I thought of that gives you the rigidity of the thickened-edge slab but is easier to insulate… except at the garage door.
New slab with radiant heat - GreenBuildingAdvisor
Apr 22, 2016 · And, getting the feedback from my the engineer on the project that the thickened slab edge is required and that weighing all the pros and cons, the existing structure, and the location being where it is, he recommended to eliminate the vertical insulation, connecting the slab to the foundation at all locations, and do a monolithic pour.
Normal dimensions of grade-beam (edge) for monolithic slab?
As plumb-bob said, the dimensions largely depend on how the slab is engineered. Some monolithic slabs are not thickened at the perimeter at all. Structural concerns aside, you need a certain dimension from grade to the top of the slab (typically 6" to 8"), and a certain depth below grade to accommodate perimeter drains and rock with some soil ...
Thermal Control in a Monolithic Slab - GreenBuildingAdvisor
Jan 19, 2022 · 2-1/2" of XPS foam will line the interior of the mono-slab form and 2-1/2" XPS foam extending 30" out from the mono-slab edge (frost protected foundation). The rest of the slab area will have 2" closed cell foam sprayed on the ground after the rough plumbing is installed. 6"x6" mesh with radiant tube attached will complete the slab prep.