3 inch strap on boss.....

[Jimk]

I.D. ?

[R D S]

Ideally I need to connect a sink waste to a soil pipe, it's 3 inch. Does a 3 inch strap on boss exist? Because I can't find one.

And if I can't find a suitable boss.... Would it be a terrible idea to drill a suitable sized hold in the soil pipe and just ram the boss adapter in?

By adapter i'm talking about this,

Also do we care where we connect it? There's a few inch of pipe indoors under the lav, gut feeling is to connect it as far from the actual pot as possible, are there rules?

[R D S]

There are 82mm..... that could work.

[R D S]

That will work, why are we calling 82mm pipe '3 inch'?

[R D S]

Mebbe... But still, if we are going to pick internal or external as a way of describing pipe, it would be handy if it was the same for imperial and metric.

Anyway, i've stopped looking for a 3 inch/75mm (or 76mm) boss.

[Andy Burns]

definitely 3" or could it be 82mm ?

probably.

if the flow from pipes is "opposed" into the stack, there's a minimum offset, if not opposed, I don't think there's a limit

Part H will tell you

[NY]

3-inch strap on boss?

I've heard of plenty of things that are "strap-on" (oo er!) but never a boss before. Is it a way of converting an ordinary worker into an instant manager? ;-)

[harry]

I would insert a full size tee or Y-piece and reduce the branch down. Much stronger option.