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--- home:redland_addition [5 months ago - 2025/07/19 15:02] – [HVAC] aogail
+++ home:redland_addition [5 months ago - 2025/07/19 15:20] (current) – aogail
@@ Line 132: / Line 132: @@
 ===== HVAC =====
-==== Headline ====
+==== Routing lines====
 Holes for mechanical
 {{ :home:tb-224.pdf |Allowable holes in LVL rim joist}}
+Space for eight lines
+  * 4x 1/2 inch line sets need 4x(1.5^2) = 9 square inches
+    * 3x3 inch square minimum
+  * 4x 1/4 inch line sets need 4x(1.25^2) = 6.25 square inches
+    * 2.5x2.5 inch square minimum
+Separate upstairs and downstairs exits?
 ==== Electrical ====