From b36bad25383c73d3de968816df527081bf153244 Mon Sep 17 00:00:00 2001 From: Zane Meyers Date: Thu, 30 Oct 2025 16:54:47 -0400 Subject: [PATCH] vault backup: 2025-10-30 16:54:47 --- .obsidian/graph.json | 2 +- 2025-07-18_estimating-isnt-engineering.md | 7 ++-- alternating-current.md | 8 ++--- construction-estimating-using-excel.md | 1 + construction-estimating.md | 1 + distributed-antenna-systems-takeoff.md | 10 +++--- electrical-estimating-methods.md | 1 + homelab.md | 6 +++- lighting-controls-takeoff.md | 2 +- lightning-protection-takeoff.md | 10 +++--- media-to-watch.md | 5 ++- pdi-estimating.md | 2 ++ pre-takeoff-confirmation.md | 5 +-- purpose-of-construction-estimating.md | 1 + realism-vs-instrumentalism.md | 4 +-- statistical-significance.md | 42 +++++++++++++++++++++++ 16 files changed, 82 insertions(+), 25 deletions(-) create mode 100644 statistical-significance.md diff --git a/.obsidian/graph.json b/.obsidian/graph.json index 1069933..01dc71b 100644 --- a/.obsidian/graph.json +++ b/.obsidian/graph.json @@ -46,6 +46,6 @@ "repelStrength": 20, "linkStrength": 1, "linkDistance": 307, - "scale": 0.4237373610490891, + "scale": 0.21558141879771348, "close": false } \ No newline at end of file diff --git a/2025-07-18_estimating-isnt-engineering.md b/2025-07-18_estimating-isnt-engineering.md index 2ace231..e4d4672 100644 --- a/2025-07-18_estimating-isnt-engineering.md +++ b/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 %% + -%% + It's not engineering to budget for the most likely case. diff --git a/alternating-current.md b/alternating-current.md index af72db9..22f73c5 100644 --- a/alternating-current.md +++ b/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 diff --git a/construction-estimating-using-excel.md b/construction-estimating-using-excel.md index 6084e25..d17c780 100644 --- a/construction-estimating-using-excel.md +++ b/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_ diff --git a/construction-estimating.md b/construction-estimating.md index dd0aab7..dba7ab2 100644 --- a/construction-estimating.md +++ b/construction-estimating.md @@ -7,6 +7,7 @@ tags: - status/incomplete - topic/estimating - type/encyclopedia + - topic/construction title: Construction Estimating --- # Construction Estimating diff --git a/distributed-antenna-systems-takeoff.md b/distributed-antenna-systems-takeoff.md index 3da3807..c0561d2 100644 --- a/distributed-antenna-systems-takeoff.md +++ b/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 diff --git a/electrical-estimating-methods.md b/electrical-estimating-methods.md index bb567a5..dd757a8 100644 --- a/electrical-estimating-methods.md +++ b/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_ diff --git a/homelab.md b/homelab.md index f66058e..de7d361 100644 --- a/homelab.md +++ b/homelab.md @@ -1,7 +1,11 @@ --- id: aliases: [] -tags: [] +tags: + - authorship/original + - destiny/permanent + - status/incomplete + - topic/hobbies title: Homelab --- # Homelab diff --git a/lighting-controls-takeoff.md b/lighting-controls-takeoff.md index 4114bc2..42b977b 100644 --- a/lighting-controls-takeoff.md +++ b/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 diff --git a/lightning-protection-takeoff.md b/lightning-protection-takeoff.md index 424620d..8744bd4 100644 --- a/lightning-protection-takeoff.md +++ b/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 diff --git a/media-to-watch.md b/media-to-watch.md index 639aeb6..d78476a 100644 --- a/media-to-watch.md +++ b/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 diff --git a/pdi-estimating.md b/pdi-estimating.md index 2c9a7ff..460d27e 100644 --- a/pdi-estimating.md +++ b/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. diff --git a/pre-takeoff-confirmation.md b/pre-takeoff-confirmation.md index 23cfce8..c13a5a4 100644 --- a/pre-takeoff-confirmation.md +++ b/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, diff --git a/purpose-of-construction-estimating.md b/purpose-of-construction-estimating.md index f1f3e80..4da7075 100644 --- a/purpose-of-construction-estimating.md +++ b/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 diff --git a/realism-vs-instrumentalism.md b/realism-vs-instrumentalism.md index 483ff1c..b9483ea 100644 --- a/realism-vs-instrumentalism.md +++ b/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. diff --git a/statistical-significance.md b/statistical-significance.md new file mode 100644 index 0000000..4f811f4 --- /dev/null +++ b/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.