The previous owner of my house made extensive use of
what Home Depot calls "landscape timbers". Wood
cut in a rectangular shape, with two sides cut
curved and two cut flat.
They do not appear to have held up very well-
most are rotted, and I don't think they are more than
five years old. I'm ripping them out and
replacing them with 'ground contact' rated
treated wood and/or stone blocks.
Does anyone know what those 'landscape timbers'
really are? Have they been treated in any way?
New timbers at the HD are red, I cannot tell if
it's simply paint, or if they have had any other
treatments. Given the poor performance of the
old ones, I do not intend to purchase any.
I'm asking out of simple curiosity. I've tried
web searches for information on them, but most
of what I get is talking about rated pressure-
treated wood, or railroad ties.
About 10 years ago I bought a bunch real cheap that had been treated with
half the normal level of PT. They rotted out in about 5 years.
I expect that ones properly treated would have been more satisfactory, but I
was foolishly looking for a bargain.
Consider using 6x6", if you have corners.... interlock them.... don'tmake
them straight. Use stakes plus anchors and you need gravel and a drainage
pipe behind it. Also since they just got rid of the dangerous chemicals
that made treated lumber work, you should be aware that you are testing the
Dangerous chemicals? Scary, maybe...but not one instance of any major
illness or disease linked to the old style PT lumber. But you will be
paying considerably more....just so some safety nazi will sleep better.
Not any scientist I ever heard of. Arsenic is a naturally-occurring
substance. It was present in treated lumber in trace amounts well below that
normally found in nature and way below any level known or thought to cause
problems for (any-sized) human.
Nope, "Enviornmental Nazi" is a good description. Same people who brought
you asbestos abatement and banned breast implants. Bunch of loonies.
Perfectly safe as long as you stick to the doseages you would get
playing on the playground equipment. Yes it is carcinogenic -in large
enough doses-. As someone else pointed out, there have been no
confirmed instances of harm done by children playing on the stuff.
Well, the 1% who have no tolerance for what 99% of this planet's inhabitants
have no qualms about, should just die anyway, or at least permitted to become
so damaged they will fail to reproduce.
As a species, we should be permitted to continue to evolve into stronger
beings, but due to all these whiney ultra-liberal crybabies, 20% of us are now
allergic to PEANUTS.
You're dead wrong. Toxic environment we're presenting to ourselves is
too much for our body to take care of. I am in health care field.
You don't know how much toxic garbage people carry within themselves.
You don't take seriously when experts like Dr. Suzuki talks, do you?
People like you're part of problem, not solution.
I only used 4x4" PT timbers. This is not a high-stress structure.
The 'walls' I'm making are not very tall. 8 inches to a foot in
height, or so. Timeber ends don't line up, I mostly did that by using
a mix of 8' and 10' timbers. That way I didn't have to make many
cuts. Where I did have to cut an end, I let it soak in 'end cut
solution'. Anyone have any idea if that stuff really helps much?
Wall will have gravel and drain pipe behind it when finished.
Bored holes in the timbers, soaked the inside of the holes with
'end cut' solution (that wasn't easy) and drove steel stakes
through them into the ground. Timbers are attached to each other
both by 3.5" "deck-mate" screws driven at an angle from one
timber into the one beneath, and by galvanized 'strong-tie'
metal strips running from one timber to another with 1.25"
'deck-mate' screws holding them in. I keep hearing that
the new PT wood is more corrosive than the older style, so
I'm hoping at least one of those techniques will hold
the wall together. On about half of the 'strong-ties'
I painted the face that touches the wood with
rustolium before attaching them, will see if that makes
them last any longer.
Depends on when they were cut. Until this year, they
were treated with arsenical CCA, which has been replaced
with the much less satisfactory ACQ. Ground contact
rated footings, which were a good idea with CCA, are an
absolute necessity with ACQ.
Oval "landscape timbers" are what's left of logs after being
shaved into plywood veneers on a veneer lathe. A couple, three
trips each side through a surface planer produces the flat
top and bottom faces. Being the centers of logs, aka "center
shakes," they're the poorest quality cut, primed with interior
tension which leads to warping, twisting, bowing, splitting, and
various other headaches a few years down the line.
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