I have sixty spots where I need to clamp a horizontal 7/8 conduit to a
vertical 7/8 conduit. Looking for a part to do this with no joy.
So far my best solution is to get two hole conduit wall clamps:
then make a 3"x3" metal plate. Bolt one tube to the plate with a clamp,
then bolt the other tube with another clamp.
I'm looking for an easier way that don't need four bolts , two clamps, and a
plate at each joint.
CADDY makes clamps for crossing conduits, you should be able to get them
from any electrical supply house, possibly even Depot / Lowe's. You will
also have better luck finding stuff if you refer to the conduit by the
correct 3/4" designation, not by the actual OD.
I've seen this style in a pre-rivited pair as well:
"First Law of Leftist Debate
The more you present a leftist with factual evidence
that is counter to his preconceived world view and the
more difficult it becomes for him to refute it without
losing face the chance of him calling you a racist, bigot,
homophobe approaches infinity.
This is despite the thread you are in having not mentioned
race or sexual preference in any way that is relevant to
the subject." Grey Ghost
This application could be met with a little metalworking on the OP's part. I
haven't seen a hardware product like I'm suggesting, but maybe it already
With 2 tubes intersecting at right angles, and the vertical tube in the
foreground, place a long U-bolt around the vertical tube, on top of the
horizontal member, ends pointing backward.
Now if those ends were to be bent (down) around the horizontal member, in a
vise or simple fixture beforehand, they would then be pointing forward.
Add a simple strap across the front of vertical member, and 2 nuts.
The (double) U-bolt is shaped in a U in both planes, consisting of 3 U-bends
(the original bend, plus two that are formed simultaneously during the
The double-U-bolt will fit right-angle crossings in any orientation.
This should result in a fairly secure attachment, not strong enough to climb
on, but a slight crush at the crossing would make the connection stable.
The simple strap could be substituted with an exaust/muffler-type to create
a more secure, heavy-duty grip at the crossing.
You may name this part the W-bolt, or W-bolt Clamp.
[about clamping EMT at right angles]
This makes a stitching-on-the-baseball shaped clamp; you can make
the same contour with a plastic tie-wrap, if that's rugged enough.
Most lashups I've participated in have bolted unistrut to the wall
and connected the tubing to THAT instead of to other tubing.
Speaking of lashups, a bit of twine and BoyScout quality lashing can
do this kind of thing, too...
Yep, unistrut makes a neat installation. I haven't see the fiberglass type,
that's likely to be expensive stuff.
The light duty conduit clamps (two formed sheetmetal pieces secured with a
screw perpendicular to the conduit) for unistrut are kinda wimpy, and they
will move if pressured.
The spring nut (heavy duty flat nut plate that's placed inside unistrut to
bolt to), is a much more secure method, but then another piece of hardware
(or 2 or 3) is needed to hold the conduit securely in place, if the
application is something different than placing conduit for wiring runs.