Dishwasher plumbing - two waste pipes - any advice?

[RickyTFC]

I'm a complete novice to plumbing as you'll be able to see, but I need some help gents.

I told my missus I could plumb the dishwasher and I need to save face,please help me wipe the smug grin off her face.

So, I have a waste pipe from my washing machine feeding into the waste pipe under the sink. I now need a second waste pipe under the sink to connect my dishwasher.

I bought a double waste outlet and I thought I could screw it under the sink plug or small sink plug. I can screw it to either, but as it's 40mm it's the same size as all the other pipes and they don't slot in together.

If I connect it to the small sink plug, the T section only lets it slide in a small amount.

If I connect it to the main sink, the pipe is too long, the right angle pipes are 30 or 40mm and don't fit snuggly, and then what do I do with the original waste pipe outlet? Do I buy another T section.

I am aware I am a buffoon. Please help.

 

[solutions]

You cant beat macalpine traps. Posted this for someone yesterday with a slightly different kitchen trap problem, but the page should help you too.
Pick the trap most appropriate to your set up or what you need then search for the model number, buy and fit.
http://www.mcalpineplumbing.com/traps/space-saver-kits/1-189-double-bowl-space-saver-kit.html

 

[nines]

Another option.
Try a search for "self tapping waste connector" Wickes do them as do most plumbers outlets