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vault backup: 2025-10-29 17:14:01

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Zane Meyers
2025-10-29 17:14:01 -04:00
parent 13abc6d2ee
commit ecb7b124c4
8 changed files with 167 additions and 104 deletions
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.obsidian/community-plugins.json
Vendored
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@@ -12,5 +12,6 @@
"image-converter",
"recent-files-obsidian",
"obsidian-latex-suite",
"obsidian-pretty-bibtex"
"obsidian-pretty-bibtex",
"obsidian-tikzjax"
]
fire-alarm-takeoff.md
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@@ -53,11 +53,11 @@ For each elevator shaft:
`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`GEN, ELEV, FIRE PUMP & FA ROOM ASSEMBLIES`/`ELEV SHAFT ...`
Count = 1
* **Count** = 1
`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`GEN, ELEV, FIRE PUMP & FA ROOM ASSEMBLIES`/`FACR TO ELEV SHAFT ...`
Length = Length measured from the most distant points of the FACR and elevator shaft.
* **Length** = Length measured from the most distant points of the FACR and elevator shaft.
* Input adder length to reach the level of the shaft (Minimum 15ft).
> [!important] Counting Elevator Shafts
@@ -79,11 +79,11 @@ For each Elevator Control Room (ECR):
`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`GEN, ELEV, FIRE PUMP & FA ROOM ASSEMBLIES`/`ELEV CONTROL ROOM ...`
Count = 1
* **Count** = 1
`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`GEN, ELEV, FIRE PUMP & FA ROOM ASSEMBLIES`/`FACR TO ELEV CONTROL RM ...`
Length = Length measured from the most distant points of the FACR and ECR.
* **Length** = Length measured from the most distant points of the FACR and ECR.
* Input adder length to reach the level of the ECR (Minimum 15ft).
### FACR to Stairwells
@@ -95,7 +95,7 @@ For each stairwell:
`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`GEN, ELEV, FIRE PUMP & FA ROOM ASSEMBLIES`/`FACR TO STAIRWELLS 1" CONDUIT ...`
Length = Length measured from the most distant points of the FACR and stairwell.
* **Length** = Length measured from the most distant points of the FACR and stairwell.
* Input adder length to reach the level of the stairwell (Minimum 15ft).
### Terminal Cabinets
@@ -109,13 +109,13 @@ Horizontal:
`Area` = Same as FACR
**Length** = Length measured from FACR to all electrical rooms
* **Length** = Length measured from FACR to all electrical rooms
Vertical:
`Area` = "Typical - Building All Levels"
**Length** = 10ft
* **Length** = 10ft
### Annunciator Panels
low-voltage-takeoff.md
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@@ -27,7 +27,9 @@ title: Low Voltage Takeoff
* Audio-Visual
* Wi-Fi
Not to be confused with [[telecom]].
> [!important]
> Not to be confused with [[fire-alarm-takeoff]]
> or [[telecom-takeoff]].
## Takeoff
medium-voltage.md
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---
id:
aliases: []
tags:
- authorship/original
- destiny/permanent
- topic/construction/electrical
- type/encyclopedia
title: Medium Voltage
---
# Medium Voltage
"Medium voltage" refers to voltage systems greater than 600V.
## Insulation Level
> [!example]
>
> > [!cite] 343 Madison Avenue Project Specifications, emphasis added
> > 2.2 MEDIUM VOLTAGE CABLES (CON EDISON)
> > * ...
> > * H. Construction
> > * ...
> > * 3. Insulation
> > * ...
> > * c. _The minimum average insulation thickness shall be not less than 175 mils._
> > The minimum thickness at any cross-section of the insulation
> > shall be not less than 90% of the specified minimum average thickness.
>
> In this case 100% insulation level is appropriate for 15kV conductors.
| Voltage Rating | Insulation Level | Insulation Thickness |
| --------------:| ----------------:| --------------------:|
| 5kV | 100% | 90 mils |
| 5kV | 133% | 115 mils |
| 5kV | 173% | 140 mils |
| 8kV | 100% | 115 mils |
| 8kV | 133% | 140 mils |
| 8kV | 173% | 175 mils |
| 15kV | 100% | 175 mils |
| 15kV | 133% | 220 mils |
| 15kV | 173% | 260 mils |
| 25kV | 100% | 260 mils |
| 25kV | 133% | 320 mils |
| 25kV | 173% | 420 mils |
| 35kV | 100% | 345 mils |
| 35kV | 133% | 420 mils |
| 35kV | 173% | 580 mils |
pre-takeoff-research.md
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@@ -80,9 +80,21 @@ Low Voltage
2. In the drawings, locate:
* Floor plans where LV scope is shown
* LV Details
3. Read about the project specifications and construction type
4. Fill out OneNote
Telecom
1. Locate MDF (aka MTR, MPOE) and IDF Rooms
2. Service entrance conduit "Site Low Voltage Ductbank (SLVDB)"
3. Riser throughout building
4. Sleeving for riser
5. Locate Proposal/Scope of Work. Determine ownership and takeoff responsibility:
* Cabling
* Conduit & Pathways
* Sleeving
6. Locate which plans the LV is taken off on
7. Locate LV Details
8. Read about the project specifications and construction type
## Voltage Drop
sigmoid-functions.md
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@@ -25,3 +25,14 @@ since it remains differentiable.
$$
\sigma(x) = \frac{1}{1 + e^{-x}}
$$
```tikz
\begin{document}
\begin{tikzpicture}[domain=-5:5]
\draw[->] (-5.2,0) -- (5.2,0) node[right] {$x$}; % x axis
\draw[->] (0,-5.2) -- (0,5.2) node[above] {$y$}; % y axis
\draw[color=red] plot (\x,\x) node[right] {$f(x) = x$};
\draw[color=orange] plot (\x,{1/(1+exp(-\x))}) node[right] {$\sigma(x) = \frac{1}{1 + e^{-x}}$};
\end{tikzpicture}
\end{document}
```
telecom-takeoff.md
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@@ -19,126 +19,101 @@ title: Telecom
> [!important]
> Not to be confused with [[low-voltage-takeoff]].
## Preparation
### Riser
1. Locate MDF and IDF Rooms
2. Service entrance conduit "Site Low Voltage Ductbank (SLVDB)"
3. Riser throughout building
4. Sleeving for riser
### Devices
1. Locate Proposal/Scope of Work. Determine ownership and takeoff responsibility:
* Cabling
* Conduit & Pathways
* Sleeving
2. Locate which plans the LV is taken off on
3. Locate LV Details
4. Read about the project specifications and construction type
5. Fill out OneNote
## Takeoff
1. Takeoff devices as shown throughout the building
2. Takeoff Conduit Riser as needed
### "Site Low Voltage Duct Bank"
## "Site Low Voltage Duct Bank"
* Conduit from outside of building to MDF
| | |
| -------- | ------------------------------- |
| Area | 2 - Site |
| Phase | Site |
| System | LVD - Site Low Voltage Ductbank |
| Bid Item | 1 - Site |
| | |
| ---------- | --------------------------------- |
| `Area` | "2 - Site" |
| `Phase` | "Site" |
| `System` | "LVD - Site Low Voltage Ductbank" |
| `Bid Item` | "1 - Site" |
`COMMON ASSEMBLIES`/`PDI EMPTY CONDUIT`
* Size and quantity per proposal > drawings > assume (4) 4"C
* Stubbed 5' outside of building footprint
* Garden Style - Outside of every building
Size and quantity per proposal > drawings > assume (4) 4"C
* **Length** = Length measured from MDF to 5ft beyond building footprint
_Garden Style:_ Outside of every building
### Telecom Vaults
* Temp. Item
* $1000, 12 Hours, Sort Code 200
"Quazite Box"
polymer concrete enclosure
### Backbone Riser
`TEMPORARY ITEMS`/...
| | |
| ------ | --------------------- |
| Area | Lvl |
| Phase | BOH |
| System | TC - Telecom Backbone |
* **Material Price** = 1000.00
* **Labor Hours** = 12.00
* **Sort Code**? = 200
Typically (2-4) 4" conduit ran from building entrance to Main Telecom Room.
`COMMON ASSEMBLIES`/`POLES / EXCAVATION / CORING / UG PULL BX`/`MANHOLES / PULL BOXES / EXCAVATION / CONCRETE`/...
Then from MTR/MDF/MPOE, typically (2-4) 4" to Telecom Riser (sometimes in electrical room), Add for vertical
## Backbone Riser
> Going forward for the riser backbone. It's better to utilize a Typical and put 15' of the conduit riser on each floor bc currently it has the entire riser on the mezzanine level. So when Ops goes to release the conduit from the CBOM they are going to have it all on the mezzanine level and not on every level where it's needed
(2) 4"C or (4) 4"C ULO
| | |
| --------- | ------------------------------- |
| `Phase` | "Building - BOH ..." |
| `System` | "TC - Telecom Backbone" |
Add sleeves
* (2) 4" EZ Path - ID.HILTI
### Telecom Backboard
### Horizontal Backbone
A-Bid: Telecom Backbone
| | |
| --------- | --------------------- |
| `Drawing` | Telecom riser diagram |
| `Area` | Area of riser room |
* **Length** = Length measured from MDF to IDF.
* Input adder length to reach the level of the IDF (Minimum 15ft).
### Vertical Backbone
| | |
| --------- | ------------------------------- |
| `Drawing` | Telecom riser diagram |
| `Area` | "Typical - Building All Levels" |
* **Length** = Length between floors (15ft ULO)
## Telecom Backboard
As shown on plans.
| | |
| -------- | ------------------------------- |
| `Phase` | "Building - BOH ..." |
| `System` | "TC - Telecom Backbone" |
`COMMON ASSEMBLIES`/`MISC ASSEMBLIES`/`... PLYWOOD BACKBOARD`
### Corridor Conduit
## Corridor Conduit (Unit MSDE to IDF)
* EMPTY CONDUIT : MSDE TO IDF
Empty conduit, either of
* `FEEDER CONDUIT AND WIRE`/...
* `COMMON ASSEMBLIES`/`PDI EMPTY & DUCTBANK CONDUIT`/...
* "Average of subfeeds"
* Add Conduit to Riser
One Takeoff per Area per level
* Choose Material
* **Length** = Average of subfeed lengths × # of Units
* **Count** = # of Units
* Choose size
* Strut mount
## Inner Duct
### Inner Duct
For future use (e.g. fiber)
USE GP (CA.27.10.11-14)
`COMMON ASSEMBLIES`/`TELECOM SYSTEMS`/`INNERDUCT`/`... (GP)`
For Future use (ex// Fiber)
## Devices
* "Average of subfeeds"
* Run in Corridors
* One Line Item per Area per level
As shown on plans. Ignore floor boxes, other electrical scope.
> * Level 2 Area A has 20 Units
> * Subfeed Average is 100'
> * Level 2 Area A Micro Duct = 2000' Length and 20 Count
### Devices
CA. Telecom. 8. 6 or 7
Take off by counts on Drawings
3/4" or 1" EMT Stub Up (Use 1" if not specified)
* Unless plans state conduit home runs
* Already at 10'
* Use 9 and 10 if over 10'
Count all telecom located in a wall
* Don't need for floorboxes
* Don't need to link
* Doesn't matter what wall type
If more than 3 wires use 1" conduit
#### Rough-In Only
Run when Free Air is Qualified on Proposal
CA.27.8.6/7
* Parts: 1 Box, EMT Stubby, 2 J-Hooks
CA.22.7
* Parts: 2 Boxes, EMT Stub, 1 J-hook/per 6'
`COMMON ASSEMBLIES`/`TELECOM SYSTEMS`/...
* .../`BOH / AMENITY ASSEMBLIES`
* .../`SCREWLESS DECORA COVERS UNITS / BOH`
* .../`ROUGH IN ASSY`
the-failure-of-risk-management.md
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@@ -87,6 +87,20 @@ Assuming that the value of one dollar were linear,
all three games should have the same solution,
but in reality one's answers will differ.
#### Formulas
$$
\text{Utility} = 1 - e^{\frac{-X}{S}}
$$
where $X$ is Payoff, and $S$ is a scale unique to a decision maker.
$$
\text{CME} = -S \times \ln(1 - \text{Utility} \times \text{Pr})
$$
where $Pr$ is the probability of Payoff.
### Expert Opinion Must Be ~~Adjusted~~
Expert opinion is valuable despite its flaws.