Tar tite when taped

[chris kennedy]

I have a situation where a 1?" threadless compression coupling for RMC will end up in a pitch pan. The hot mop kettle tar will be poured into this pitch pan at over 400?F. This conduit also has the conductors installed. I'm not very comfortable with this. Can someone ease my mind?

 

[nakulak]

probably not a good place for a cplng. wrap it with heavy alum foil or light flashing and tie wire it if you are worried. been a long time since I boiled tar but 350 to 375 sticks in my mind ? (if you boil it too hot the tar ignites)

 

[eric9822]

What about the insulation of the wire? Will it withstand 400 Degrees?

 

[nakulak]

Unless this is a huuuuuuuge pitch pocket, I can't imagine the conductors in the pipe getting heated up that much ? (I think he's worried about the tar getting in the pipe and on the conductors and melting the insulation that way ?)

 

[Pierre C Belarge]

I also like the idea of aluminum tape over flashing, if you cannot find a way to rearrange the location of the coupling.

 

[Pierre C Belarge]

Is it possible to eliminate the tar (pitch)pocket, and install a "Witches hat"?

 

[chris kennedy]

Is it possible to eliminate the tar (pitch)pocket, and install a "Witches hat"?

Here is the application. The mechanical contractor finished raising the copper yesterday. Where the 90 comes out of the deck, I will install another 90 to get up off the deck. Pitch pan will surrond the RMC and copper with a custom goose neck enclosure over the whole mess.

 

[cadpoint]

I won't dance with that!
You need the owner to realize thats not your style.
If this is a rubber mate there might be warrenty issues, (can't tell) get or talk to a roofer otherwise just the same.

Cushioned Unistrut is what you need and maybe an EL or a pullbox! I would like to install outside any cover structure.

 

[hardworkingstiff]

Can you remove the conductors and reinstall them after the pour is made?

 

[Pierre C Belarge]

I am surprised that the installation as pictured is able to keep water out.

Is there a way you can poke through the roof in another location? What about where the ductwork enters the building below the rooftop equipment?

 

[chris kennedy]

Can you remove the conductors and reinstall them after the pour is made?

Sure, I can do anything.:grin: But this is the gutter in the basement that is where the 1?" originates, I don't have time to deal with it. I did give them a price to get rid of this and install a panel on the roof, but right now I'm racin the roofers.

 

[Pierre C Belarge]

what is the inspector going to say about all the other MESSSSSSSSS I see there?

 

[chris kennedy]

what is the inspector going to say about all the other MESSSSSSSSS I see there?

He's going to ask me when I'm going to fix it.:grin: This place is a mess Pierre, built in 47. See this thread.

 

[chris kennedy]

Also see this, same roof job fed from the same conduit.

 

[LJSMITH1]

Why not get a 6" deep Hoffman Nema 4X box and mount it in a pitch pocket the roof, then back feed it with your conduit? Have the roofers pour a 1" deep tar pool and then punch as many conduit entries as you need on the side of the box. The box is waterproof, and can be accessed as needed.

 

[chris kennedy]

Why not get a 6" deep Hoffman Nema 4X box and mount it in a pitch pocket the roof, then back feed it with your conduit? Have the roofers pour a 1" deep tar pool and then punch as many conduit entries as you need on the side of the box. The box is waterproof, and can be accessed as needed.

The after pictures will be posted Tuesday.

 

[nakulak]

I wanna see pictures of Al playing in the tar

 

[Pierre C Belarge]

I wanna see pictures of Al playing in the tar

...with his shovel. :grin:

 

[danickstr]

a stainless NEMA 4x box is around 600 bucks or so.