type of waterstop
type of waterstop
(OP)
Hey all - I am working on a large waste water treatment plant. We will have a lot of waterstops specified. I know that personal preference is a factor here but can you please tell me what type of waterstop you prefer to use/specify and why? Practicality of construction is definitely a concern, as is working the reinforcing around the waterstop. I am debating between hydrophilic and pvc but am open to any economically feasible alternative. I have not used hydrophilic but feel it may be necessary because of the waterstop interfering with reinforcing.
Thanks!
Thanks!






RE: type of waterstop
RE: type of waterstop
I agree with jike, use 3/8 inch thick PVC waterstops. Construction joints should be 6 inches long. Moving joints should be 9 inches long and have a centerbulb.
Make sure your specifications direct the contractor to build watertight structures and give them procedures to correct leakage.
I'd stay away from hydrophilic until it's a last resort.
RE: type of waterstop
RE: type of waterstop
RE: type of waterstop
RE: type of waterstop
RE: type of waterstop
RE: type of waterstop
RE: type of waterstop
RE: type of waterstop
PVC waterstops can be done well if drawn, spec'd and constructed properly. It is alot more foolproof than bentonite!
RE: type of waterstop
It takes time for the hydrophilic waterstop to activate. So if you have a gap, it will leak for a couple of days before the hydrophilic stops it. I don't like explaining this to a nervous client.
While the new hydrophilic waterstops are supposed to be better, I worry that that they'll only work for a limited number of cycles. We build concrete vessels to last more than 40 years, but I don't have data to show that hydrophilic waterstop will continue to work that long.
I'm an old fashioned type engineer. I don't like changing what works until there's a real good reason. So it's barrier waterstops for me.