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Transcript
00:03
some sites will include existing services such as water
00:07
supply systems or gas pipelines that must be avoided.
00:11
Your stormwater network must go above or below these existing services
00:17
if your pipe is to go above the existing service,
00:20
the minimum downstream invert technique that was used to
00:23
set a minimum outfall level can be used however,
00:26
it is probably simpler to type in the upstream and downstream invert of a pipe
00:31
to fix its level in slope and then the other pipes should be designed around it
00:36
to begin duplicate the basic design phase
00:40
and then create a phase called existing service.
00:44
Make sure any other phases are turned off so that their
00:47
visibility is off and so they are not running in the simulation
00:52
from the tree view.
00:53
Double click the connections node to open the connections table.
00:57
A column named lock should be included at the right end of this table
01:01
For pipe three. Make sure the lock is set to all
01:05
for all other pipes. The lock should be set to none.
01:09
Lower pipe three x 1 m by manually typing in the
01:12
up invert level and the down invert level for it.
01:16
For both values, type in a value that is one m less than the current value,
01:21
click okay,
01:23
next
01:24
rerun the network design wizard
01:26
on the ribbon.
01:27
Preliminary sizing tab network design panel, click network design wizard,
01:34
click next twice to forward to the design options page,
01:38
Enable the option,
01:39
allow backdrops and then set the minimum backdrop value
01:43
to 0.2 and the minimum backdrop value to 1.5.
01:48
No other values need to be changed,
01:51
click finish
01:53
now, open the profile view to check the design changes
01:57
in the tree view,
01:59
right click the flow path and select show profile
02:03
In the profile dialogue.
02:04
You can see how the design now drops pipe 3 to avoid the existing services.
00:03
some sites will include existing services such as water
00:07
supply systems or gas pipelines that must be avoided.
00:11
Your stormwater network must go above or below these existing services
00:17
if your pipe is to go above the existing service,
00:20
the minimum downstream invert technique that was used to
00:23
set a minimum outfall level can be used however,
00:26
it is probably simpler to type in the upstream and downstream invert of a pipe
00:31
to fix its level in slope and then the other pipes should be designed around it
00:36
to begin duplicate the basic design phase
00:40
and then create a phase called existing service.
00:44
Make sure any other phases are turned off so that their
00:47
visibility is off and so they are not running in the simulation
00:52
from the tree view.
00:53
Double click the connections node to open the connections table.
00:57
A column named lock should be included at the right end of this table
01:01
For pipe three. Make sure the lock is set to all
01:05
for all other pipes. The lock should be set to none.
01:09
Lower pipe three x 1 m by manually typing in the
01:12
up invert level and the down invert level for it.
01:16
For both values, type in a value that is one m less than the current value,
01:21
click okay,
01:23
next
01:24
rerun the network design wizard
01:26
on the ribbon.
01:27
Preliminary sizing tab network design panel, click network design wizard,
01:34
click next twice to forward to the design options page,
01:38
Enable the option,
01:39
allow backdrops and then set the minimum backdrop value
01:43
to 0.2 and the minimum backdrop value to 1.5.
01:48
No other values need to be changed,
01:51
click finish
01:53
now, open the profile view to check the design changes
01:57
in the tree view,
01:59
right click the flow path and select show profile
02:03
In the profile dialogue.
02:04
You can see how the design now drops pipe 3 to avoid the existing services.
Required for course completion
Some sites will include existing services, such as water supply systems or gas pipelines that must be avoided. Your stormwater network must go above or below these existing services.
If your pipe is to go above the existing service, the ‘minimum downstream invert’ technique that was used to set a minimum outfall level can be used. However, it is probably simpler to type in the upstream and downstream invert of a pipe, to fix its level and slope, and then the other pipes should be designed around it.
You can see how the design now drops Pipe (3) to avoid the existing services.