Water is the culprit in frost heave. Most substances shrink, or become more
dense as they cool down. Water screws up the situation by EXPANDING somewhat
just as it freezes - that's why ice is on the top of the lake, not at the
bottom as would be expected based on the action of most other materia
Harry Wade wrote:
At 11:40 AM 1/8/05 -0800, you wrote:
on the matter of frost heave,
I'm enraged, . . . well maybe only mildly irritated . . . . :-)
1. I am beginning to understand that what is called "frost heave", is
the process whereby freezing soil at the surface of the ground can only
Some of the downhill lean is due to differential slip. The surface soil is
often more friable, is able to retain more water in larger capillary pores,
and has lower cohesive and adhesive ratings.
Since most rainfall is in relatively small amounts, the surface few inches,
even a foot or more, ca
Joe,
Yes, you are on target-- the two slots-which are also the vents, are
used to tighten the spring. I use strong tweezers or needle nose
pliers but a home made tool would be preferable. Tighten clockwise
as that compresses the spring and raises the pressure at which the
valve vents.
Geoff,
Geoff,
How do you adjust the safety valve? Do you insert a tool of some sort
into the two slots on top that are opposite each other and turn? Does
a clockwise turn raise the pressure at which the safety valve vents?
Thanks,
Joe
On Jan 9, 2005, at 3:50 PM, Geoff Spenceley wrote:
Joe,
I have f
Joe,
I have found it necessary to adjust safety valves over the years.
Aster are usually simple. Sometimes the adjustment is for cleaning,
sometimes because the seal ( usually a bit of paint) deteriorates
and the valve adjusting "nut" starts to unscrew. I don't know the
pressure relief for
> Dear friends,
>
> I have to correct a few things about the installation of the pipes with
> their flanges. The pipes have to be hung from a simple work horse with
the
> bottoms of the flanges NOT touching the bottom of the holes. Dig the
holes
> only about 2" deeper than the frost line require
Dear friends-and all those with misconceptions of how to control the
frost heaving of your vertical track bed supports. I beat it by moving to
Mexico city. No freezing here. But you northerners can correct the heaving
by not letting the vertical track supports move vertically by making your
Hello,
I ran the Mikado for a few hours today. My three year old was not
happy with it running in reverse mostly. I tried to explain that I
have to break it in again in both directions - it just wasn't working
with her. Oh well.
Anyway, I installed two new safety valves because I had to repl
Hi Royce,
That is about the size of it, you are correct. If you look at a common utility
pole it is the big end that is in the ground and
they do not get jacked out by freeze / thaw cycles. The common "T" fence post
is quite susceptible to jacking because of
the configuration of the post. In
At 11:40 AM 1/8/05 -0800, you wrote:
>on the matter of frost heave,
I'm enraged, . . . well maybe only mildly irritated . . . . :-)
>1. I am beginning to understand that what is called "frost heave", is
>the process whereby freezing soil at the surface of the ground can only
>expand UP as
Lemme see now,
I can "grab" PVC or iron with my hands but mother nature can't?
Don't make sense to me!
Royce, where is SB?
We don't have much of a frost problem here in southern Florida either.
Have Fun
Michael
- Original Message -
From: "Royce Woodbury" <[EMAIL PROTECTED]>
To: "Multip
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