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Thank you all for all the answers!
1) Need to add dish soap as water vetter.
2) Flush the entire length to ensure no air and/or spring for 75' of clear 1/2" to 3/4" ID PVC hose
3) expand to bigger hose ends
4) possibly protect against wind (was pretty calm this past weekend, so probably not a factor.
The ends are 9 feet above slab, and I've tried kicking the hose around to dislodge any air bubbles, but still....
Good idea to "calibrate" the "system" by placing the two ends side-by-side for an hour or so. If they don't settle down to exactly the same level, I'll know there is air bubbles or something else wrong.
I do have a laser level and also a rotating one. Rotating one says it's accurrate to +- 1/4" @ 33 feet.
I find both useless unless I already have reference points at each corner (or at least three corners with the rotating one); thus the water level.
Finn
Bob Perkinson wrote:
It is true that the Laser Level is only as good as the method used to level
it but when you are moving a water level from post to post you will need to
let the water movement settle out, this takes time. And there is always the
possibility of introducing air into the hose or dropping one end and having
to fill it back up. A laser level can be set in one central location and
project an elevation across the complete work area. Know the elevation of
the Laser and making measurements from that point is simple. Of course if
you want to spend the money there is always an optical surveyors level that
takes 2 to operate. I have used both the cheep and the expensive laser
levels, and the big difference is in the brightness of the laser, and the
method of support.
Bob Perkinson
Hendersonville, TN.
RV9 N658RP Reserved
If nothing changes
Nothing changes
Bob, I've always wondered how a laser level could be more accurate than a
water level. I'm not disputing the claim but I've never understood how its
possible. I'll explain my quandry.. a laser level is only as level as the
little bubble will make it. I've found some that aren't even close to level
when they 'say' they are. A water level [ all things concidered like
bubbles and wind] will sit perfectly level once properly set up, we know
that water will seek its own level. I'm not convinced that a laser level is
better. Am I missing something??
Curious is all :)
Jarrett
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