to the Australian Plumbing Code AS/NZS 3500.3:2015

All these programs are online and free to use. However there are a lot of extra features that require a payment.
Fill out the form below to get a free trial of these extra features.

waiting for calculations
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Whats in the Extra features.
Should you wish to impress your Client, your Boss, your Certifier, or the significant other, you need to take a look at the "Extra Features".
It also doesn't hurt to have a copy of the calcs for your files, and by the way, there are a lot of other cool things in the extra features.
These include:- Enjoy.
Ken Sutherland B.Tech MIEAust CPEng RPEQ

Great product!!! Many thanks, makes a very dull task very fast and easy!!

I haven’t had need to access your site recently until now …… and am very happy to subscribe. Your updated site is brilliant …. and I hope those who use it will subscribe.
Michael (M J Corbett & Associates Pty Ltd)

quite impressed with your work, I just had an inquiry from my architect to modify the gutter design which would involve a recalc of the how many down pipes would be needed, your little program did this within seconds, THANKS !!
Chris (Weiss builders)

I have been using it for a number of years but hadn’t subscribed, I have found the features available since subscribing are very helpful, and feel guilty that I hadn’t payed in the past.
Mike (Powell Building Design)

Thank you for your nice and efficient web-based calculator. We are using your calculators find very useful.
Rashendra Das (Klopfer Dobos Pty.Ltd.)

A big thanks for your fantastic website mate, incredibly helpful tool.
Chris Tyson Hydraulic Design Consultant at Tyson Enterprises

We are saving so much time using your calculators rather than doing everything manually. Thanks!
Chin G&P Consulting Engineers

Great work as always Ken. No roof gutter design shall leave this office without the calculations and justification for sizings.
Jahan Trevena, Principal of McLauchlan & Associates Building Design Consultants.

I’ve tested this with an example (by hand, using 3500.3 charts) and agree with your results
Rowan PSE engineering

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