annl
2009-05-21, 10:31 PM
I can't find any clear documentation or direction on using Wall Structure "Function" setups.
We have been using Finish 1 [4] and Finish 2 [5] without respect to intent. Substrate and Structure are not clearly understood and are mixed use categories.
So here is my interpretation based on AUGI forums, blogs and experience. There are conflicting explanations out there on the 'net.
[1] Structure. This is the core structural element of a wall. What you want the wall center line to identify as the "core". Question: Would you have multiple layers of "Structure" ? -- I am choosing only 1 element for wall cores: Concrete, CMU, Studs. Everything else is function [2] and above.
[2] Substrate. Counter intuitive, but interpreting this to be vertical wall elements used to support finishes: Furring, yes. What about Sheathing or any Backings, are they Substrate or Finish?
[3] Thermal Air/Layer Insulation. Dead space between Structure/Substrate and Finish or 0" width Insulation material.
[4] Finish 1. Now it gets complicated. I interpret this to be the first layer of Finishes (i.e. Interior to the last material), either side (Exterior / Interior) of wall. Can have multiple levels of Finish [4] -- not really a finish, but supports the Finish [5] material. Examples: Backing materials, Sheathing, Mortar. Don't wrap this material necessarily.
[5] Finish 2. Final layer of material on either wall side (Exterior / Interior) of wall. Not multiple layers of Finish [5]. Examples: Stucco, Gypsum, Brick Veneer. What the world sees. Usually wrap this material.
Have also read in blogs that Finish 1 [4] goes only on the Exterior side of the wall and Finish 2 [5] goes only on the Interior side.
Is there a definitive explanation of these strata functions anywhere?
We have been using Finish 1 [4] and Finish 2 [5] without respect to intent. Substrate and Structure are not clearly understood and are mixed use categories.
So here is my interpretation based on AUGI forums, blogs and experience. There are conflicting explanations out there on the 'net.
[1] Structure. This is the core structural element of a wall. What you want the wall center line to identify as the "core". Question: Would you have multiple layers of "Structure" ? -- I am choosing only 1 element for wall cores: Concrete, CMU, Studs. Everything else is function [2] and above.
[2] Substrate. Counter intuitive, but interpreting this to be vertical wall elements used to support finishes: Furring, yes. What about Sheathing or any Backings, are they Substrate or Finish?
[3] Thermal Air/Layer Insulation. Dead space between Structure/Substrate and Finish or 0" width Insulation material.
[4] Finish 1. Now it gets complicated. I interpret this to be the first layer of Finishes (i.e. Interior to the last material), either side (Exterior / Interior) of wall. Can have multiple levels of Finish [4] -- not really a finish, but supports the Finish [5] material. Examples: Backing materials, Sheathing, Mortar. Don't wrap this material necessarily.
[5] Finish 2. Final layer of material on either wall side (Exterior / Interior) of wall. Not multiple layers of Finish [5]. Examples: Stucco, Gypsum, Brick Veneer. What the world sees. Usually wrap this material.
Have also read in blogs that Finish 1 [4] goes only on the Exterior side of the wall and Finish 2 [5] goes only on the Interior side.
Is there a definitive explanation of these strata functions anywhere?