Deflection in PVC pipe
Deflection in PVC pipe
(OP)
I'm working on design for layout a 16" PVC waterline:
In general, what are my options for snaking through a road, achieving deflection less than that from using an 11 1/4 bend?
Does a deflection coupling involve one joint or two? (I'm trying to figure out the max deflection allowed given that my jurisdiction allows 1 1/2 degrees per joint)
In general, what are my options for snaking through a road, achieving deflection less than that from using an 11 1/4 bend?
Does a deflection coupling involve one joint or two? (I'm trying to figure out the max deflection allowed given that my jurisdiction allows 1 1/2 degrees per joint)





RE: Deflection in PVC pipe
RE: Deflection in PVC pipe
RE: Deflection in PVC pipe
RE: Deflection in PVC pipe
RE: Deflection in PVC pipe
RE: Deflection in PVC pipe
RE: Deflection in PVC pipe
RE: Deflection in PVC pipe
Restrained Joints are usually used for this application; PVC Pipe Uni-Flang/Ford, EBAA Iron Inc.1. Mega-lug series.
RE: Deflection in PVC pipe
Are you "snaking" through a street that is required to remain open? You might want to just do bends - you *will* have to restrain them though.
RE: Deflection in PVC pipe
Solvent cementing ABS pipe up to DN800 is done successfully in Australia. So DN400 PVC is considered a "snack".
Another suggestion is that you use PE or ABS for the section of the street where you need the radius. Flange connections can be used to join the PE to the PVC. PE can be laid in one length and pull around the radius you need. No need for costly excavation and concrete in thrust blocks as required for DICL or MSCL.
RE: Deflection in PVC pipe
RE: Deflection in PVC pipe
The difference as I understand is that the Tyco produced ABS in Australia is from a master batch of resin that has the butadiene coplymerised with the styrene acrylonitrile whereas other manufacturers may have blended the polymers post production. This latter process results in the butadiene not being grafted to the SAN polymer molecules.
http://www.tycowater.com/plastic_pipeline_systems
If you cannot use ABS then the PVC is what you stuck with I guess.
RE: Deflection in PVC pipe
RE: Deflection in PVC pipe
RE: Deflection in PVC pipe
If the welded joint is sectioned there is no apparent join line. Testing by CSIRO and the manufacturer has demonstrated the welded joint is stringer than the parent material.
This jointing techniques is routinely used on major sewage & water treatment plants, mineral processes, power station, chemical plants, district cooling systems, building services and desalination plants up to DN800 and Class15 (15 bar) rating.
Now rconner is a known advocate of ductile iron. I find the constant negatives given in respect of other technologies to be unprofessional. Ductile iron has a place in industry and I use it frequently but there are other technologies in use around the world.
RE: Deflection in PVC pipe
Now, I do not believe it is in the spirit of these lists to herein attempt (to in ad hominem or attack the messenger fashion) to define exactly who each individual is that responds to threads. While that can be in some cases a much easier debate or political tactic than addressing the technical issues, I would prefer to keep discussions or differences of opinion on these lists in technical terms. As to "professional", at least I do not continually promote by name brand products (such as Tyco abs pipes?) from the country of the poster's origin, as I have seen some do on these lists.
RE: Deflection in PVC pipe