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vault backup: 2025-11-11 17:19:52

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Zane Meyers
2025-11-11 17:19:52 -05:00
parent a07bc6c202
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2025-11-11.md
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@@ -33,3 +33,26 @@ facts of our role:
In these ways we're actually more like court
wizards than artists, which is an understandably
desirable position.
## 2025-11-11 14:41
I just saw a post on a construction estimators forum
from a user lamenting that their coworkers and customers
largely do not understand the difference between markup and margin.
It made me remember the micro-debates about that I would have with Dale
every time we were closing out an estimate.
This is the example I would always give
while trying to explain it to him.
![[markup-vs-margin]]
***
The user also stated that they would prefer to list overhead and profit
separately from scope line item costs,
but that their customers push back when they try.
I'm not sure where they got this preference.
Sure that would be more "transparent",
but it's at odds with the purpose of a breakdown.
distributed-antenna-systems-takeoff.md
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@@ -38,9 +38,11 @@ Match Fire Alarm takeoff Length and Count
### Stairwell Riser Every 2 Floors
`Area` = "Typical - Building Even Levels"
`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`DAS ASSEMBLIES`/`STAIRWELL RISER EVERY 2 FLRS = ...`
> [!info] Takeoff
> * `Area` = "Typical - Building Even Levels"
>
> 1. `COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`DAS ASSEMBLIES`/`STAIRWELL RISER EVERY 2 FLRS = ...`
> * **Count** = Each stairwell
### FACR to Electric Room
@@ -56,9 +58,9 @@ Takeoff in every Electric Room
### Top 2H Rated Room To Roof
`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`DAS ASSEMBLIES`/`TOP 2HR RATED RM TO ROOF = ...`
* **Length** = 15ft or height of ceiling on last building level
> [!info] Takeoff
> 1. `COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`DAS ASSEMBLIES`/`TOP 2HR RATED RM TO ROOF = ...`
> * **Length** = 15ft or height of ceiling on last building level
## Horizontal
@@ -66,6 +68,6 @@ Takeoff in every Electric Room
> Usually only for cellular DAS.
> Confirm takeoff requirement with [[pdi-estimating#Bid Estimating|Bid]].
`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`DAS ASSEMBLIES`/`CORRIDORS ...`
* **Length** = Length measured for every corridor/garage
> [!info] Takeoff
> 1. `COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`DAS ASSEMBLIES`/`CORRIDORS ...`
> * **Length** = Length measured for every corridor/garage
fire-alarm-takeoff.md
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@@ -58,7 +58,7 @@ For each Elevator Control Room (ECR):
`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.
* Input adder length to reach the level of the ECR (Minimum 15ft).
* Input adder length to reach the level of the ECR (Minimum 15ft).
### Elevator Shafts
fixture-designations.md
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@@ -237,7 +237,7 @@ Create its own breakout in WBS, and phase in Accubid
## Site & Courtyard
> [!important]
> Coordinate with landscape
> Coordinate with landscape drawings
### Breakdowns
@@ -245,7 +245,8 @@ Create its own breakout in WBS, and phase in Accubid
### Pole Lights
`FIXTURE ACCESSORIES`/`SITE POLE ASSEMBLIES`/...
> [!info] Takeoff
> 1. `FIXTURE ACCESSORIES`/`SITE POLE ASSEMBLIES`/...
Add subassemblies for stub-outs, pole, base, and grounding as appropriate.
@@ -256,9 +257,12 @@ Add subassemblies for stub-outs, pole, base, and grounding as appropriate.
> * market lighting
> * catenary lighting
> [!info] Takeoff
> 1. `FIXTURE LABOR`/`FIXTURE LABOR 2HR`
>
> 2. `FESTOON & ROOF ASSEMBLIES`/`FESTOON CABLE HANGER & EYE BOLTS - LENGTH`
> * **Length per Unit** = Light string length
>
> 3. `COURTYARDS & LANDSCAPE`/`ALUM BOX W/ FLEX FIX, 3/4" CONDUIT - PVC40 - ...`
> * **Length per Unit** = Distance to panel + 15ft
@@ -273,9 +277,10 @@ Add subassemblies for stub-outs, pole, base, and grounding as appropriate.
| Fixtures built into cabanas/pergolas | .../`ALUM BOX W/ FLEX FIX, 3/4" CONDUIT - PVC40 - ...` |
| Handrail light | .../`ALUM BOX W/ FLEX FIX, 3/4" CONDUIT - PVC40, IMC ELBOW - ...` |
[^2]: If we don't own concrete, delete Pre-cast bollard base from assembly
[^2]: If we don't own concrete, delete pre-cast bollard base from assembly
## FAA Lighting
> [!info] Takeoff
> 1. `FIXTURE LABOR`/`FIXTURE LABOR 1HR`
> 2. `FESTOON & ROOF ASSEMBLIES`/`Aircraft Warning, 3/4" Conduit GRC/PVC 2#10, 1#10G`
markup-vs-margin.md
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@@ -0,0 +1,29 @@
---
id:
aliases: []
tags: []
title: Markup vs. Margin
---
# Markup vs. Margin
$$
\text{Profit} = \text{Sell Price} - \text{Cost}, \quad
\text{Markup} = \frac{\text{Profit}}{\text{Cost}}, \quad
\text{Margin} = \frac{\text{Profit}}{\text{Sell Price}}
$$
Suppose a product that
* costs $80 to produce
* is sold for $100
$$
\text{Profit} = 100 - 80 = 20, \quad
\text{Markup} = \frac{20}{80} = 25\%, \quad
\text{Margin} = \frac{20}{100} = 20\%
$$
Because of \*waves hands\* finance reasons,
contractors (and sellers of products and services in general)
almost exclusively talk about profit in terms of margin.
Even if someone says "15% _markup_"
they're still probably talking about margin.
uncommon-syntax.md
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@@ -0,0 +1,5 @@
# Uncommon Syntax
* **i.e.** --- _id est_ ("that is")
* **e.g.** --- _exempli gratia_ ("for example")
units-takeoff.md
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@@ -55,17 +55,18 @@ Used in lieu of individual split systems.
### Dedicated Circuit Receptacles
For N5-15R/N5-20R receptacles serving fixed equipment such as:
* refrigerators
* gas ranges
* microwaves
* clothes washers
* hood fans
use single receptacle assemblies, even where shown as duplex.
`COMMON ASSEMBLIES`/`UNITS - MC CABLE ASSEMBLIES`/`KITCHEN & BATH ASSEMBLIES - METAL STUD`/`SGL REC ...`
> [!quote] Joel Jansen 2025-11-11, pp.
>
> For N5-15R/N5-20R receptacles serving fixed equipment such as:
>
> * refrigerators
> * gas ranges
> * microwaves
> * clothes washers
> * hood fans
>
> match the receptacle configuration shown on the plans
> (i.e. simplex to simplex, duplex to duplex).
### Air Sealing