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Dimension Tolerances - see attached

rob2218
Newcomer
how to accomplish?
...Bobby Hollywood live from...
i>u
Los Angeles, CALIFORNIA!
SOFTWARE VERSION:
Archicad 22, Archicad 23
Windows7 -OS, MAC Maverick OS
8 REPLIES 8

Aaron Bourgoin
Booster
not sure this is a question about the tool so much as about the strategy. Imaging you're the framer on site who will have to deal with the 1/8ths of an inch you buried in imprecise dimensions. Rationalize the building via the model.

don't despair - read the Shoegnome blog post published last week.
Think Like a Spec Writer
AC23-3003 USA / AC24-4018 USA
Rhino 7 Mac
OSX 10.14.6 & 11.3.1

rob2218
Newcomer
you have a link for that Shoenogme post please.
...Bobby Hollywood live from...
i>u
Los Angeles, CALIFORNIA!
SOFTWARE VERSION:
Archicad 22, Archicad 23
Windows7 -OS, MAC Maverick OS

Aaron Bourgoin
Booster
i wasn't talking about sloppy modelling. rather, I was talking about rationing dimensions so that you accomplish two things - in order:

a) give the client the best possible building - what they want
b) don't insult the intelligence of the contractor and their framer.

BTW - this is my 1000th post. it only took me a bit more than twelve years to get here. what a great journey. :- )
Think Like a Spec Writer
AC23-3003 USA / AC24-4018 USA
Rhino 7 Mac
OSX 10.14.6 & 11.3.1

rob2218
Newcomer
I hear your words.....but...the reality is...the client (the architect) wants what he wants....and I didn't mean to imply sloppy drafting either. I'm very maticulous about my precision.
Aaron wrote:
i wasn't talking about sloppy modelling. rather, I was talking about rationing dimensions so that you accomplish two things - in order:

a) give the client the best possible building - what they want
b) don't insult the intelligence of the contractor and their framer.

BTW - this is my 1000th post. it only took me a bit more than twelve years to get here. what a great journey. :- )
...Bobby Hollywood live from...
i>u
Los Angeles, CALIFORNIA!
SOFTWARE VERSION:
Archicad 22, Archicad 23
Windows7 -OS, MAC Maverick OS

Gerald Hoffman
Contributor
Aaron,

Congratulations on your 1000th post ! I'm still working on 500.

Cheers,
Gerald
"The simplification of anything is always sensational" GKC
AC 25-3011 USA, CadImage Tools
2019 MacBook Pro 16" w/ AMD Radeon Pro 5600M GPU
OS X 11.6
2.4 Ghz 8 core i9, 64 GB RAM
27" LG 5K Monitor

s2art
Newcomer
If both dimensions said 2' 1/2" the overall dimension would not add up to the same as both dimensions reading 2' 1/4" at the higher accuracy. So I guess Archicad is making sure the overall dimension string is showing the correct total.

Personally, I would show the outer dimensions as "Equal"
S t u a r t . R o s e
PAUA Architects
AC22 6025 NZE
iMac Retina 27inch
3GHz Intel Core i5, 32GB 2667 MHz DDR4

Steve Jepson
Expert
The level of precision the dimensions are displayed at is not only for the sake of the Carpenter.

It is also for the sake of verifying the precision and accuracy of the computer model, checking dimension chains, finding small differences in the schedules.

Dimensions on a plan are also not entirely for the sake of measurements.

For example, the reason to show a wall height dimension of 8'-1 1/8" is because this is how the carpenter knows you are indicating 92 5/8" studs.
I could list many other examples but you get the point I am sure.

A piece of solid sawn lumber has nominal size, an actual size, and a theoretical size.

We use the theoretical size in making the Plans with a computer.
This is why it is very important for both the builder and the CAD Technician to understand why things are dimensioned the way they are.
Partly for the sake of the computer, and partly for the sake of the carpenter.
ArchiCAD 25 3011 USA - Windows 10 Pro 64x - Dell 7720 64 GB 2400MHz ECC - Xeon E3 1535M v6 4.20GHz - (2) 1TB M.2 PCIe Class 50 SSD's - 17.3" UHD IPS (3840x2160) - Nvidia Quadro P5000 16GB GDDR5 - Maxwell Studio/Render 5.2.1.49 Multilight 2.1.0.1

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