Search found 101 matches

by Owen Thornton
Wed Sep 09, 2020 11:58 am
Forum: General
Topic: Type of Node to use for Existing Manhole
Replies: 2
Views: 159

Re: Type of Node to use for Existing Manhole

It probably isn't the node type (the standard one named "EXISTING" would probably be fine). Which option is generating the message "this network doesn't have an outlet"?

Are you able to email data and/or screenshots to support@12d.com ?
by Owen Thornton
Mon Aug 31, 2020 1:11 pm
Forum: General
Topic: Coordinate Box is missing from 12D
Replies: 6
Views: 400

Re: Coordinate Box is missing from 12D

Wow, I'd never noticed that option.
by Owen Thornton
Mon Aug 31, 2020 12:49 pm
Forum: General
Topic: Coordinate Box is missing from 12D
Replies: 6
Views: 400

Re: Coordinate Box is missing from 12D

I've not seen that before ...

Are you able to zip up one of the select few projects and email to support@12d.com ? We will have a look.
by Owen Thornton
Wed Aug 26, 2020 11:34 am
Forum: News and Announcements
Topic: Give Your Water Networks a Geometry Lesson today
Replies: 9
Views: 2257

Re: Give Your Water Networks a Geometry Lesson today

Assuming you registered more than a few days ago (it can take a day or two to be granted full access) I'm afraid all I can suggest is that you use the "Contact us" link at the bottom of the forum page, to ask why you don't have full access. I am not a forum administrator.
by Owen Thornton
Thu Aug 20, 2020 5:46 pm
Forum: General
Topic: Dynamic Drainage Bypass Shape - Road Weir vs Conduit
Replies: 3
Views: 470

Re: Dynamic Drainage Bypass Shape - Road Weir vs Conduit

I am fairly confident that "road weir" is not appropriate for this case. I might be inclined to investigate the "side weir" option, but I confess I don't know how appropriate it might be. If the flow rate through the little kerb outlet is small, as one would expect, I just wouldn't expect a terribly...
by Owen Thornton
Thu Aug 20, 2020 5:04 pm
Forum: General
Topic: Dynamic Drainage Bypass Shape - Road Weir vs Conduit
Replies: 3
Views: 470

Re: Dynamic Drainage Bypass Shape - Road Weir vs Conduit

Hi Allan, I just looked up the drawing you mentioned, and it is for flow rates no greater than 20 L/s. I would be inclined to model the outlet drain link as a conduit, not a weir. And I would probably model the kerb outlet node as on-grade, not a sag, as water won't really have an opportunity to pon...
by Owen Thornton
Tue Aug 18, 2020 9:22 am
Forum: General
Topic: Drainage - Pipe capacity and area calculated incorrectly
Replies: 1
Views: 234

Re: Drainage - Pipe capacity and area calculated incorrectly

Is the grate level at either end of the pipe, below the pipe obvert? Doing this turns your pipes into open channels, with a lower capacity. (Not sure what you mean by "drowned". This is something that should only be happening if the tailwater level is set higher than a grate level. Happy to investig...
by Owen Thornton
Tue Jul 28, 2020 5:18 pm
Forum: General
Topic: 12d Latest Manual
Replies: 4
Views: 570

Re: 12d Latest Manual

Sorry, I don't think that's a valid version number.
by Owen Thornton
Tue Jul 28, 2020 3:21 pm
Forum: General
Topic: 12d Latest Manual
Replies: 4
Views: 570

Re: 12d Latest Manual

The latest manual available is always installed with the latest version, and available under Help=>12d Model Reference manual . You can generally expect the manual to lag behind the software, somewhat, especially for actively developed options. However, I just checked the WNE, and the pic in the man...
by Owen Thornton
Fri Jun 26, 2020 1:52 pm
Forum: General
Topic: Longsection PPF assistances
Replies: 1
Views: 345

Re: Longsection PPF assistances

There is an example of this in the installed PPF: $LIB\longsection_PW_A1_basic.lplotppf

To turn it on, you just need to set the text size greater than zero, as shown here:
ls_grades_at_vtps.png
ls_grades_at_vtps.png (42.77 KiB) Viewed 333 times
by Owen Thornton
Mon Jun 08, 2020 1:07 pm
Forum: General
Topic: 3 Pipes flowing into manhole
Replies: 5
Views: 1612

Re: 3 Pipes flowing into manhole

Hi Victor, that would be a different issue (diverging/bifurcating pipe flows). A solution is described in this other topic:

viewtopic.php?f=3&t=11673

(Note that you don't need to do this with the dynamic analysis, where the hydraulics are automatically balanced.)
by Owen Thornton
Thu Jun 04, 2020 12:14 pm
Forum: General
Topic: Question regarding HGL
Replies: 3
Views: 610

Re: Question regarding HGL

You need to register and log in to the forum to gain full access. (I didn't notice your post was in the general section.) A pressurised HGL that is much steeper than the pipe, indicates that the pipe may be too small for the flow. If you are still achieving the necessary freeboard at the upstream no...
by Owen Thornton
Wed Jun 03, 2020 4:29 pm
Forum: General
Topic: Question regarding HGL
Replies: 3
Views: 610

Re: Question regarding HGL

The HGL in the pit is higher that the HGL in the upstream pipe, when the Kw factor is greater than the Ku factor. Sometimes Kw=Ku, sometimes Kw>Ku. ... Re your question about a steep HGL, is it within the pipe, or above the obvert? Manning's formula only covers friction losses, but it gives best res...
by Owen Thornton
Tue May 26, 2020 11:43 am
Forum: General
Topic: Offsetting BIM Stormwater Service Chambers
Replies: 1
Views: 467

Re: Offsetting BIM Stormwater Service Chambers

Yes. Go back to the source water model and edit it with the WNE. Setup a road design file to link a setout and centre string to each kerb inlet pit. Then use Adjust Pit Locations panel to laterally adjust all the kerb inlet pits, relative to the setout string, in one fell swoop. A demonstration of t...
by Owen Thornton
Tue Apr 07, 2020 10:26 am
Forum: News and Announcements
Topic: Give Your Water Networks a Geometry Lesson today
Replies: 9
Views: 2257

Re: Give Your Water Networks a Geometry Lesson today

You need a forum account and to be logged in, to be granted full access to the forum.

(I incorrectly assumed you would already need to be logged in to view this topic, as well.)