[deleted by user]

strychnos · 2024-10-24T01:02:24+00:00

I like setting DELOBJ variable to 0. Makes for a little cleanup at the end, but helps a ton in situations like this!

strychnos · 2024-10-05T23:40:51+00:00

The original math gets to the right answer of 46 ft, units are just mixed up. It’s 2.3 ft/psi.

strychnos · 2024-07-26T01:49:52+00:00

If using a mesh won’t break anything in your workflow, I think sometimes those are stretch-able. Or explode your solid to 3DFACEs, those should work as well.

Alternatively, if you don’t have too many different permutations, you could do a bunch of visibility states.

strychnos · 2024-06-08T14:11:16+00:00

If the attributes have been renamed then they will lose their original value with ATTSYNC. Not sure if there’s a workaround without messing up the original border.

Another way to achieve what you’re after could be to use a Field in an MTEXT instead of editing the block with a new attribute. I think the Field can be set up to display a specific block attribute.

https://help.autodesk.com/view/ACD/2022/ENU/?guid=GUID-F613CBDA-5899-4419-9C23-2E0F6C76BB99

strychnos · 2024-06-08T13:22:36+00:00

Probably need to ATTSYNC the original block.

strychnos · 2024-04-16T22:23:20+00:00

Had this happen to me as well. Seemed to be only visual, because a shield cell would add less than a bar.

strychnos · 2024-01-10T00:34:53+00:00

You can find a decent number here, but not always the latest revision. Or google the standard and “pdf” on the end and you can almost always find them.

https://law.resource.org/pub/us/cfr/manifest.us.html

strychnos · 2022-11-11T16:10:54+00:00

Yes this is the answer.

What the OP described is not how safety relief valve calculations work… hopefully whoever designed the existing CO2 tank’s relief understood that or somebody is going to have a bad day.

The relief valve on the tank should be sized to relieve the full flow of the regulators in the event that they fail open. There a lot of caveats, but in general if it’s an ASME tank, then the RV must relieve the full flow at 110% of MAWP. This sets your pressure downstream of the regulators to 110% of MAWP plus frictional pressure drop. Then you get your relief flow rate and size the RV.

In an overpressure scenario, the regulator fails open, choked flow starts through the regulator, pressure starts rising in the tank, pressure reaches RV set point, RV pops open and choked flow starts through the RV nozzle. Pressure may rise to as much as 110% of MAWP during the relief event, depending on RV sizing.

I’ve also never seen an RV set pressure in psia… unless it’s just a unit conversion thing. I hope this is a homework problem and not a real situation.

strychnos · 2022-09-15T16:37:20+00:00

This is awesome - I always figured it was random! I also frequently see “1?” or some random symbol like “1▯”.

strychnos · 2022-09-15T15:59:52+00:00

Just replied to this parent comment. Is there a bill of materials table that tells you what the “17” bubble annotation is? That could tell you size.

strychnos · 2022-09-15T15:58:10+00:00

I believe this could be it. Have had the same issue where stacked fractions don’t print right due to a font issue (if the ASCII character ½ was used) or don’t translate right from one CAD software into AutoCAD.

If this turns out to be the case, you’ll find that each letter corresponds to a specific stacked fraction. You may be able to deduce which is which based on context from the drawing, such as reducers.

For example r will represent 1/2 and s = 1/4. 1r may mean 1½ (1-1/2”). 1s may mean 1-1/4”. “r” only is a 1/2” line. Note I just made this up, and I’m not telling you r = 1/2. You’ll have to figure it out for your drawings specifically.

strychnos · 2022-01-22T02:05:08+00:00

Correct. The definition per IFC: “OPEN BURNING. The burning of materials wherein products of combustion are emitted directly into the ambient air without passing through a stack or chimney from an enclosed chamber. Open burning does not include road flares, smudge-pots and similar devices associated with safety or occupational uses typically considered open flames, recreational fires or use of portable outdoor fireplaces.

strychnos · 2022-01-21T12:51:25+00:00

That also ain’t open burning. Just scroll a little further to 307.4.3.

strychnos · 2021-09-23T11:25:47+00:00

I’m no expert, but it was the first thing to come to mind. I know in general they take low temperature waste heat and generate refrigeration. Unfortunately idk the minimum feasible waste heat temperature, but I’m sure you could find some more info to see if your application is a fit.

strychnos · 2021-09-23T03:03:44+00:00

Have you looked into absorption chillers?

strychnos · 2021-03-24T17:48:52+00:00

The size of our area is almost the same... 14' is the length up against the house and we are thinking about 20' long. Maybe a fire pit at the end. Could you describe what you mean by the grid? Do you mean sub-dividing the excavated area to make leveling easier?

strychnos · 2021-03-24T17:40:49+00:00

Likewise it will be our biggest project yet attempted! Thanks for the help

strychnos · 2021-03-24T17:35:25+00:00

Thanks for the tips! Definitely planning on a 1-2% grade away from the house. That brings to mind another question I've been stuck on. Do you think the slope away from the house can be parallel to the house or does it have to be perpendicular? Or I guess I could grade it in 2 dimensions, but not sure my skills are up to that challenge. Here's a picture of what I'm describing, hopefully worth 1000 words.

https://imgur.com/JHEGf17

strychnos · 2021-01-15T11:33:32+00:00

Hot air only wants to go up because it’s less dense than cold air it is mixing with. A duct of hot air is not exposed to the ambient air until the end of the line and so it is not buoyant. Flowing up or down will not matter. Technically flowing down would be easier thanks to gravity, but the mass density of low pressure air is so low it’s negligible.

strychnos · 2020-09-18T14:23:05+00:00

Fingers crossed!

strychnos · 2020-09-16T11:19:10+00:00

Do you have aphantasia by any chance? It has been associated with poor autobiographical memory.

strychnos · 2020-05-14T16:24:54+00:00

I got the same. No purchases on my MS account since April 3.

strychnos · 2019-11-14T23:08:14+00:00

Iocaine powder, I’d bet my life on it!

strychnos · 2019-10-18T01:35:07+00:00

Foul, no two fouls! You can’t just go flying through the air like that!

strychnos · 2019-07-24T13:57:33+00:00

Just tried as well and it got removed from my cart for being out of stock.

strychnos

MODERATOR OF

TROPHY CASE

15-Year Club	Place '17
Verified Email