vault backup: 2025-09-29 13:43:57

feeders.md

@@ -21,10 +21,10 @@ may be routed through with special permission.
 > STRUCTURAL SLAB IS AN 8-INCH THICK
 > UNBONDED POST-TENSIONED TWO-WAY SLAB UNLESS NOTED OTHERWISE.
 
-> [!cite] Joel Jansen 2025-08-15, in reference to Belle Meade Plaza, pp.
+> [!cite] Joel Jansen 2025-08-15, in reference to Belle Meade Plaza (pp.)
 > No affect on takeoff. Routing in slab still possible.
 
-> [!cite] Joel Jansen 2025-08-21, in reference to Belle Meade Plaza, pp.
+> [!cite] Joel Jansen 2025-08-21, in reference to Belle Meade Plaza (pp.)
 > PT slabs do have some affect on takeoff.
 > 3in conduit can not be run in an 11in PT slab.
 
@@ -34,15 +34,27 @@ may be routed through with special permission.
 > STRUCTURAL SLAB IS 3 1/2 INCHES OF NORMALWEIGHT CONCRETE
 > ON 3-INCH COMPOSITE STEEL DECK UNLESS NOTED OTHERWISE.
 
-> [!cite] Joel Jansen 2025-08-15, in reference to Belle Meade Plaza, pp.
+> [!cite] Joel Jansen 2025-08-15, in reference to Belle Meade Plaza (pp.)
 > Do not route in slab.
 
+#### Fire Rated Feeders
+
+PDI estimating practice is to run all "emergency" feeds
+(life-safety or just standby)
+in a 2-hour rated assembly.
+This usually requires no change to takeoff for high-rises
+since electrical riser rooms are themselves fire-rated.
+
+* RHW-2 insulated conductors in conduit -- "Lifeline Cable"
+* 2-hour rated metal clad cable -- "Vitalink"
+
 ### Formatting
 
 All feeder takeoff descriptions should be prefixed with `<parent> TO <child>`
 
 > [!cite] Joel Jansen, in reference to Omni Hotels Raleigh, pp.
 > It is acceptable to use typicals for identical feeders
+> (i.e. meter centers fed from bus plugs)
 > so long as the typical is in the Feeders `Area`.
 
 ## Sequence
@@ -50,23 +62,20 @@ All feeder takeoff descriptions should be prefixed with `<parent> TO <child>`
 ### 1. Estimate preparation
 
 Read about the project specifications and construction type:
-* Delivery Method (Plans & Specs, Design Build, Design Assist, Preliminary Budget)
 * Deck thickness
-* Wiring method
-* Conductor material (Aluminum/Copper)
+* Wiring methods
+* Conductor material
+* Wire terminations (set-screw acceptable or compression required?)
 
 Locate:
 * Riser Diagram
 * Feeder Schedule (if present)
 * Main Electrical rooms and panel locations
-* Routing (if present)
 
 ### 2. Takeoff
 
-* Choose a starting point on the riser
-* Determine wire & Conduit makeup (3Ph/1Ph, AL/CU, Conduit)
-* Measure off the length of the feed _ADDERS_
-    * Square corners, use corridors if possible
+Run parallel to building lines
+and route through corridors where possible.
 
 > [!important]
 > All takeoffs in Systems with names including "site"
@@ -84,7 +93,7 @@ Add an additional 5ft (total 15ft) for site runs
 
 #### Primaries
 
-Empty conduit.
+Usually only empty conduit if included.
 
 #### Secondaries