"Wayne Whitney" wrote in message
...
On 2008-11-10, Ivan Vegvary wrote:

I know that I can wrap it with 'plumbers tape' and nail the tape
ends to my studs. Easy to do where you can get a bite because of a
fitting. How about mid-length? It would be easy if they made a
'glue-on' (ABS) quarter circle with floppy straps that could be
nailed to the studs.

If you are currently building this, then the easiest thing to do would
be to add a standard coupling where you need to support it. Then you
can wrap your plumber's tape tightly around the pipe just below the
coupling.

If this is an existing stack, you can still achieve the same effect:
Take a standard ABS coupling and cut it half lengthwise. Remove the
stop from each piece any way that you like (including just cutting
each piece shorter right next to the stop). Now you can cement the
two pieces onto the vent stack wherever you need to support it.

If you split the coupling, it will be difficult to get enough pressure for
the ABS cement to soften both pipe and coupling to achieve a good bond
without tightening a couple of gear pipe clamps around the split halves.
Just leave the gear clamps on the couplings to assure that they don't move.

Another simpler method is to skip the coupling, and just use a couple of
gear clamps around the pipe and run the perforated metal strapping under the
clamps on both sides and bending the strap up where it appears under the
last clamp. This way you avoid slippage.