Woke up 0530 this morning to the sound of heavy rain. Walked down stairs
only to find that the rain was in my kitchen. Hauled ass back up the steps
to the bathroom to find that the toilet supply line ruptured. Backtracking I
figured that all was fine at just after 0030 so sometime after 0030 and 0530
this occurred. Now, judging by the amount of water on the floor in the
kitchen and the basement it must have been at 0032.
Our kitchen ceiling, the fan, the telephones the kitchen parquet floor
(which is now buckling and sounding like a sponge) has all been lost. Along
with several items one might find on the kitchen floor and on the table. You
never think that something like this will happen and when it does you wonder
whywould I friken leave that there?
Oh the joys of homeownership!
Just curious....what type of supply line was it and where did it rupture (at
the end fittings, in the middle, or elsewhere?????). Is the line subject to
any unusual stresses like vibration, flexing, etc.??? This is an unusual
I've never had it happen before! Ruptured at the top and was a plastic line,
(PVC). It broke away from the toilet. No unusal stresses that I am aware of,
the toilet doesn't move when being used and the floor is solid.
Not so unususl.
I had the same thing happen in the master suite toilet about 4 years ago.
The supply line wsa one f those braided chrome wire metal sheathed ones.
Too busy swearing and cursng abut the flow of water through the living
room ceiling light fixtures and the falling wall board in the living
room below to
ever bother to figure out where the failure point on the supply line was.
The line was still fully connected both to the tank inlet fitting and
the to the valve
on the stub pipe coming out of the wall.
That particular supply line had been there about 15 years, ever since that
bathroom floor was tiled and the old white flushable toilet that
was replaced by a "low flo" fancy porceline toilet that was color keyed
two match the tile.
A couple years ago I installed a new valve and the instructions said it must
be used with braided wire supply line.
I asked the manufacturer why that was, as I didn't want to replace my nylon
He said there was no real reason for it, since the supply lines never break.
That made sense, since the pressure is so low in the narrow line. (yes, I
know the actual static psi is exactly the same, but the total pressure on
the walls is much less because the area is much less.)
But apparently it can happen! I have bought some braided metal for my ice
maker, but haven't gotten around to installing it.
No, pressure is force per unit area so 40 psi is the same no matter what
the diameter. Therefore the _FORCE_ exerted on the wall is
proportionally the same as to the larger diameter as area is directly
Pipe and tubing wall thicknesses (for the same material) are scaled as
size increases (although in steps, not for every incremental size) so
the tensile stress is (very) roughly the same.
How much difference there is for plastic wall thicknesses versus size
I'm not sure, haven't looked specifically, but would expect them to be
similarly scaled as for tubing and pipe for economy in materials as
compared to required thickness for designed/rated pressure.
The only place the smaller diameter really makes a significant
difference is that the total _FORCE_ at the end cross-section may be
small owing to cross-sectional area...
About 20 years ago, woke up to the sound of running water in the the
middle of the night. Asked the wife why she was taking a shower at
2:30? Realized she was still in bed - why was the water running? Ran
to the bathroom, saw water spraying under the toilet, shut it off. The
supply line was just fine, it was the cheap plastic nut attaching the
supply line to the bottom of the tank - split very cleanly between the
round part and the hex part. Luckily, this was a single story home on
slab, got it shut off right away, only problem was a little bit of wet
carpet at the entry to the bathroom.
For the last 20 years, I've been wondering when the next one is gonna
Neither have I. That's why I posed the question as to what type was
involved, where it failed, and whether there were any exceptional stress,
temperature, vibration, or other explanations. It is relatively common to
hear of plastic tubing developing a leak when refrigerator ice makers are
I used to do insurance repairs exclusively. The top three
causes of flooding in a home were: toilet supply lines,
icemaker lines, washing machine hoses.
They are not even thought about much and no one regularly
examines them to see how they are doing. You never move them
except in special circumstances, so they sit back there,
forgotten, until they fail.
I check mine often, and I use the best lines that I can get.
That is copper for icemaker, and stainless steel braided hose
for supplies and washing machine hoses.
I have never seen one break, but I have seen the results of
many of them breaking.
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