vault backup: 2025-10-30 16:54:47

.obsidian/graph.json

@@ -46,6 +46,6 @@
   "repelStrength": 20,
   "linkStrength": 1,
   "linkDistance": 307,
-  "scale": 0.4237373610490891,
+  "scale": 0.21558141879771348,
   "close": false
 }

2025-07-18_estimating-isnt-engineering.md

@@ -7,6 +7,7 @@ tags:
   - topic/estimating
   - type/anecdote
   - authorship/original
+  - topic/construction
 title: Estimating Isn't Engineering
 ---
 # Estimating Isn't Engineering
@@ -20,14 +21,14 @@ Specifically, they took issue with having to
 This puzzled me because the examples they gave
 sounded like stereotypical estimation problems.
 
-%% TODO: Example %%
+<!-- TODO: Include example -->
 
-%%
+<!--
 TODO: discussion based on the difference between engineering,
 (which requires knowledge of subject matter)
 and estimation
 (which requires knowledge of ~~impact~~).
-%%
+-->
 
 It's not engineering to budget for the most likely case.
 

alternating-current.md

@@ -69,10 +69,10 @@ where:
 * 480V 3-Phase 3-Wire # Line to Lines
 
 wiring-configurations:
-* 1-Phase 2-Wire # Line to Neutral or Line to Line
-* 1-Phase 3-Wire # Line to Line and Line to Neutral
-* 3-Phase 3-Wire # Line to Lines
-* 3-Phase 4-Wire # Line to Lines and Line to Neutral
+* 1-Phase 2-Wire # Line to Line (2-Pole) or Line to Neutral (1-Pole)
+* 1-Phase 3-Wire # Line to Line and Line to Neutral (2-Pole)
+* 3-Phase 3-Wire # Line to Lines (3-Pole)
+* 3-Phase 4-Wire # Line to Lines and Line to Neutral (3-Pole)
 
 ## Active and Reactive Power
 

construction-estimating-using-excel.md

@@ -7,6 +7,7 @@ tags:
   - status/complete
   - topic/estimating
   - type/media-commentary
+  - topic/construction
 title: "Review: _Construction Estimating Using Excel_"
 ---
 # Review: _Construction Estimating Using Excel_

construction-estimating.md

@@ -7,6 +7,7 @@ tags:
   - status/incomplete
   - topic/estimating
   - type/encyclopedia
+  - topic/construction
 title: Construction Estimating
 ---
 # Construction Estimating

distributed-antenna-systems-takeoff.md

@@ -24,7 +24,7 @@ title: Distributed Antenna Systems (DAS) Takeoff
 
 ## Backbone
 
-### FACR to Every Elev. Shaft
+### FACR to Every Elevator Shaft
 
 `COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`DAS ASSEMBLIES`/`FACR TO ELEV PIT = ...`
 
@@ -58,12 +58,14 @@ Takeoff in every Electric Room
 
 `COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`DAS ASSEMBLIES`/`TOP 2HR RATED RM TO ROOF = ...`
 
-Use 15' or Height of ceiling on last building level
+* **Length** = 15ft or height of ceiling on last building level
 
 ## Horizontal
 
-1-1/2 through corridors w/ 16x16x6 J-Box
+> [!important]
+> Usually only for cellular DAS.
+> Confirm takeoff requirement with [[pdi-estimating#Bid Estimating|Bid]].
 
 `COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`DAS ASSEMBLIES`/`CORRIDORS ...`
 
-Length for every corridor/garage
+* **Length** = Length measured  for every corridor/garage

electrical-estimating-methods.md

@@ -5,6 +5,7 @@ tags:
   - authorship/original
   - destiny/permanent
   - status/complete
+  - topic/construction/electrical
   - topic/estimating
   - type/media-commentary
 title: _Electrical Estimating Methods_

homelab.md

@@ -1,7 +1,11 @@
 ---
 id:
 aliases: []
-tags: []
+tags:
+  - authorship/original
+  - destiny/permanent
+  - status/incomplete
+  - topic/hobbies
 title: Homelab
 ---
 # Homelab

lighting-controls-takeoff.md

@@ -19,7 +19,7 @@ title: Lighting Controls Takeoff
 > no consideration for _any_ lighting control beyond standard devices,
 > (with `$D`'s being the triac type)
 > however, this phrasing is ambiguous and non-universal.
-> Confirm with the bid team on what must be included.
+> Confirm with [[pdi-estimating#Bid Estimating|bid team]] on what must be included.
 
 ## Custom Switch Boxes
 

lightning-protection-takeoff.md

@@ -43,12 +43,10 @@ If no quote is available:
 
 ### Takeoff
 
-```
-Area = "Lightning Protection" // confirm
-Phase = "Building - BOH, Storage & Common"
-System = "LPT - Lightning Protection"
-BidItem = "3 - Building"
-```
+> * `Area` = "01 - Lightning Protection Building"
+> * `Phase` = "Building - BOH, Storage & Common"
+> * `System` = "LPT - Lightning Protection"
+> * `BidItem` = "3 - Building"
 
 * Takeoff: `COMMON ASSEMBLIES`/`PDI EMPTY CONDUIT`/`PVC ASSEMBLIES`/`* CONDUIT - PVC40`
   * **Length** = total downlead conduit length

media-to-watch.md

@@ -1,7 +1,10 @@
 ---
 id:
 aliases: []
-tags: []
+tags:
+  - destiny/fleeting
+  - authorship/original
+  - topic/hobbies
 title: Media to Watch
 ---
 # Media to Watch

pdi-estimating.md

@@ -17,6 +17,8 @@ title: PDI Estimating
 
 ## Departments
 
+### Bid Estimating
+
 ### Construction Estimating (ConEst)
 
 The role of ConEst is to provide context to Bid estimates.

pre-takeoff-confirmation.md

@@ -16,8 +16,9 @@ is to address potential discrepancies
 between the requirements of the project documents
 and the scope included in the bid team's proposed price.
 
-Before sending the confirmation,
-see [[wiring-method-selection]] for common issues.
+> [!important]
+> Complete [[pre-takeoff-research]]
+> before sending the confirmation.
 
 > [!example] Example provided by Joel Jansen 2025-09-18, edited
 > Good morning,

purpose-of-construction-estimating.md

@@ -7,6 +7,7 @@ tags:
   - topic/estimating
   - type/philosophy
   - authorship/original
+  - topic/construction
 title: The Purpose of Construction Estimating
 ---
 # The Purpose of Construction Estimating

realism-vs-instrumentalism.md

@@ -9,7 +9,7 @@ title: Realism vs. Instrumentalism
 ---
 # Realism vs. Instrumentalism
 
-Realism holds that the purpose of ~~science~~
+Realism holds that the purpose of [scientific research](https://en.wikipedia.org/wiki/Research)
 is to describe the world as accurately as possible.
 Instrumentalism (anti-realism) holds that the purpose
 is to make accurate predictions.
@@ -20,6 +20,6 @@ is to make accurate predictions.
 > [!quote] _Opinionated History of Mathematics_, "Did Copernicus steal ideas from Islamic astronomers?" (pp.)
 > Ptolemy's lunar model is "flawed"
 > in that it inaccurately describes Luna's distance from Earth,
-> however Ptolemy only ever uses the model to predict eclipses,
+> however Ptolemy only ever used the model to predict eclipses,
 > which the model does very well.
 > The discrepancy is only a flaw from a realist perspective.

statistical-significance.md

@@ -0,0 +1,42 @@
+---
+id:
+aliases: []
+tags: []
+title: Statistical Significance
+---
+# Statistical Significance
+
+[Statistical significance - Wikipedia](https://en.wikipedia.org/wiki/Statistical_significance)
+In statistical hypothesis testing,
+a result has statistical significance
+when a result at least as "extreme"
+would be very infrequent if the null hypothesis were true.
+
+More precisely,
+a study's defined **significance level**, denoted by $\alpha$,
+is the probability of the study rejecting the null hypothesis,
+given that the null hypothesis is true;
+and the p-value of a result, $p$,
+is the probability of obtaining a result at least as extreme,
+given that the null hypothesis is true.
+The result is said to be statistically significant,
+by the standards of the study, when $p \leq \alpha$
+
+The significance level for a study
+is chosen before data collection,
+and is typically set to 5% or much lower--
+depending on the field of study.
+
+The [**null hypothesis**](https://en.wikipedia.org/wiki/Null_hypothesis)
+(often denoted $H_{0}$)
+is the claim that the effect being studied does not exist,
+or that no relationship exists
+between two sets of data or variables being analyzed.
+
+If the null hypothesis is true,
+any experimentally observed effect is due to chance alone.
+
+In research,
+the researcher develops an [**alternative hypothesis**](https://en.wikipedia.org/wiki/Alternative_hypothesis)
+(often denoted $H_{A}$ or $H_{1}$)
+which claims that an effect or relationship _does_ exist.