MartinLe
Civil/Environmental
- Oct 12, 2012
- 394
I have the following situation:
I have 2 short piecees of open channel that I want to install valves and dam panales in. I can only take the channel out of comission for 6 hours. this is one channel that splits to deliver the water to two sieves, then reunites. Each branch has a valve at both ends, however I need a double barrier to perform work in the channel. So I want to install guidings for dam plates in addition to the existing valves, so I can take one channel out of comission without touching the other one.
The channels are H x W ~ 1.3 x 1.5 m, concrete. Medium is raw municipal wastewater.
I'm trying to understand how much a team can do in those 6 hours and if there's major problem with the time.
My thinking is, in those 6 h the installers have to do the following:
Empty channel (can be done ahead of time by closing one channel branch and dropping pump inside)
Clean working area
option a:
I have no feel for how long caulking (if this is the term) applied around the frame will need to set before it may be submerged in water.
While option b is more charming because I don't loose a few cm channel width, I don't think the work can be done in such a short time. Am I wrong?
It would be preferable to install all 4 dam plate frames in one go, but this will ultimately depend on how many installers the contractor is willing to mobilize.
I have 2 short piecees of open channel that I want to install valves and dam panales in. I can only take the channel out of comission for 6 hours. this is one channel that splits to deliver the water to two sieves, then reunites. Each branch has a valve at both ends, however I need a double barrier to perform work in the channel. So I want to install guidings for dam plates in addition to the existing valves, so I can take one channel out of comission without touching the other one.
The channels are H x W ~ 1.3 x 1.5 m, concrete. Medium is raw municipal wastewater.
I'm trying to understand how much a team can do in those 6 hours and if there's major problem with the time.
My thinking is, in those 6 h the installers have to do the following:
Empty channel (can be done ahead of time by closing one channel branch and dropping pump inside)
Clean working area
option a:
drill holes in channel wall
bolt sliding frame for dam plate onto wall
apply caulking
option b:bolt sliding frame for dam plate onto wall
apply caulking
cut slit down channel walls
insert sliding frame for dam plate into slits
grout frame
insert sliding frame for dam plate into slits
grout frame
I have no feel for how long caulking (if this is the term) applied around the frame will need to set before it may be submerged in water.
While option b is more charming because I don't loose a few cm channel width, I don't think the work can be done in such a short time. Am I wrong?
It would be preferable to install all 4 dam plate frames in one go, but this will ultimately depend on how many installers the contractor is willing to mobilize.