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

453 posts

Ultimate Geek
+1 received by user: 27

Topic # 25150 13-Aug-2008 14:29
Send private message

A very off topic off topic!

I'm trying to work out what size water storage tank I will require for our house but I'm not sure if I've calculated it properly.

The surface area of the roof is approx. 90m2. and from what I can work out average rainfall per year 1150mm per year. From what I can work out that should equal about 103500L per year.

Is this correct? It seems like a lot!


Create new topic
3143 posts

Uber Geek
+1 received by user: 797

  Reply # 156593 13-Aug-2008 14:49
Send private message

Sounds roughly right 1150mm is close to 1m,* 90m2, = 90 Cubic Metres, = 90,000 litres, so you are in the right ball park,

Although you dont want to capture all of this, ideally you will have a diverter that dumps and offloads the first 50l of each rainstorm ( all the junk in the gutters and the bird crap off the roof).

3078 posts

Uber Geek
+1 received by user: 918

Lifetime subscriber

  Reply # 156609 13-Aug-2008 15:39
Send private message

There's a few other things to take into consideration:
- When does the rain usually fall (seasonality) and at what rates
- How much you might use over the different seasons (and thus how much you need to store

Obviously the 1.15m of rain isn't going to fall in one day, so you won't need a 103k litre tank...

The best advice for your area will come from people:
- With water tanks
- Who install water tanks

Good luck!

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 »

Microsoft Dynamics 365 Business Central launches
Posted 10-Jul-2018 10:40

Spark completes first milestone in voice platform upgrade
Posted 10-Jul-2018 09:36

Microsoft ices heated developers
Posted 6-Jul-2018 20:16

PB Technologies charged for its extended warranties and warned for bait advertising
Posted 3-Jul-2018 15:45

Almost 20,000 people claim credits from Spark
Posted 29-Jun-2018 10:40

Cove sells NZ's first insurance policy via chatbot
Posted 25-Jun-2018 10:04

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

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.