Geekzone: technology news, blogs, forums
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.

1511 posts

Uber Geek
+1 received by user: 212

Topic # 225600 25-Nov-2017 21:54
Send private message

How do drain layers get minimal slope on pvc pipe?

I have a slight downslope away from my house. I want to run 90 mm pvc storm water pipe from a catch basin/access pit in a straight line down the slight slope to 8 m away to discharge to daylight near my garden.

The access pit has a female socket for the pipe at (I presume) 90 degrees.
The top of the access pit is supposed to sit flush with the top of the ground.

Note that this drawing is not to scale and also exaggerates the slope of my lawn. It shows what I would like to do with the pipe.

View this topic in a long page with up to 500 replies per page Create new topic

This is a filtered page: currently showing replies marked as answers. Click here to see full discussion.

2685 posts

Uber Geek
+1 received by user: 992


  Reply # 1907856 26-Nov-2017 09:45
One person supports this post
Send private message

1 in 100 is such a gentle slope that you might be able to just glue the pipe in then immediately before the glue sets bend the fitting slightly. Otherwise just get a plumbquik coupling (black rubber joiner with hose clips) Cut the pipe by the pit box leaving enough to join onto. Then use the plumbquik to rejoin the pipe and get your angle.

They don't officially make a 90mm plumbquik but an 80mm one should work fine.

78 posts

Master Geek
+1 received by user: 21

  Reply # 1908241 27-Nov-2017 08:36
Send private message

What type of pipe are you using?  If it is waste water, then the walls are thin. There will be enough flex in the pipe to get the drop you need. It may take a couple of meters to do so but so what? If you are using pressure pipe, then the walls are thicker and it will need a little more distance to flex the desired amount. If you are using down piping, then the walls are ultra thin, and there will be no issue. Can you pick up the pipe and see how much it flexes under gravity?


1461 posts

Uber Geek
+1 received by user: 427

  Reply # 1908271 27-Nov-2017 09:34
One person supports this post
Send private message

If you can't work it out get a drain layer in, most pipe I have seen allows a certain amount of flex unless you are trying to use metal or concrete pipe which I doubt. Long lengths of PVC pipe should have enough flex to do what you want.

View this topic in a long page with up to 500 replies per page Create new topic

Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:

Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:

Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:

News »

N4L helping TAKA Trust bridge the digital divide for Lower Hutt students
Posted 18-Jun-2018 13:08

Winners Announced for 2018 CIO Awards
Posted 18-Jun-2018 13:03

Logitech Rally sets new standard for USB-connected video conference cameras
Posted 18-Jun-2018 09:27

Russell Stanners steps down as Vodafone NZ CEO
Posted 12-Jun-2018 09:13

Intergen recognised as 2018 Microsoft Country Partner of the Year for New Zealand
Posted 12-Jun-2018 08:00

Finalists Announced For Microsoft NZ Partner Awards
Posted 6-Jun-2018 15:12

Vocus Group and Vodafone announce joint venture to accelerate fibre innovation
Posted 5-Jun-2018 10:52 to launch Kogan Mobile in New Zealand
Posted 4-Jun-2018 14:34

Enable doubles fibre broadband speeds for its most popular wholesale service in Christchurch
Posted 2-Jun-2018 20:07

All or Nothing: New Zealand All Blacks arrives on Amazon Prime Video
Posted 2-Jun-2018 16:21

Innovation Grant, High Tech Awards and new USA office for Kiwi tech company SwipedOn
Posted 1-Jun-2018 20:54

Commerce Commission warns Apple for misleading consumers about their rights
Posted 30-May-2018 13:15

IBM leads Call for Code to use cloud, data, AI, blockchain for natural disaster relief
Posted 25-May-2018 14:12

New FUJIFILM X-T100 aims to do better job than smartphones
Posted 24-May-2018 20:17

Stuff takes 100% ownership of Stuff Fibre
Posted 24-May-2018 19:41

Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.