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.
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.
A printout of the calculations, and results with Code references, designed for your own letterhead.
Check out an example.
Calculate flows, gutters, and downpipes well outside of the limits of the Code..
Calculate rectangular DP's, custom rain water heads, and any size eaves or box gutter.
Reduce gutter sizes by allowing for the location of bends and DP's.
Calculate and print out overflow calcs for eaves gutters.
(rather than a screen shot of a web page).
Calculate pipe sizes and pipe networks.
Some programs even give a fully dimensioned isometric drawing of the sump, or rain water head to cut and paste into your documents.
Ken Sutherland B.Tech MIEAust CPEng RPEQ
Great product!!! Many thanks, makes a very dull task very fast and easy!!
Andy Bradley BEng(Hons) FIEAust FCIBSE MAIRAH MIHEA MAIPM CPPD CPEng RPEQ
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.
(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 !!
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.
(Powell Building Design)
Thank you for your nice and efficient web-based calculator. We are using your calculators find very useful.
(Klopfer Dobos Pty.Ltd.)
A big thanks for your fantastic website mate, incredibly helpful tool.
Hydraulic Design Consultant at Tyson Enterprises
We are saving so much time using your calculators rather than doing everything manually. Thanks!
GandP Consulting Engineers
Great work as always Ken. No roof gutter design shall leave this office without the calculations and justification for sizings.
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
Just discovered your gutter and downpipe calculator.
Can't believe I didn't know about it before.
What a gem and congratulations on a great web app.
Now I can refer my clients to this calulator when they question why I need more down pipes on their roofs!
Building Certifier at Agile Approvals.
Love your program, I use it all the time these days since everything residential is more heavily scrutinised.
What a fantastic website for owner builders! Thank you -
took me less than one hour to meet the requirements of my building
certifier... Thank you!
(Jagged crow Farm.)
It is all good. I have done my first calculation.
PDF is printed.
Wow – it takes the worry out of it.
Thanks for a wonderful product.
Over the years I have asked Ken a few times for some advice in areas, when I was a little unsure myself.
Like how much efficiency is lost on an eaves gutter when the downpipe is connected to rear of the gutter and not the base
(typically seen in many WA project homes) He has always astounded me with his thorough responses obviously spending many hours
undertaking complex mathematical calculations. He is one of the true gentleman in this industry always prepared to help others.
I will continue to purchase his software and highly recommend it to others.
It saves me many hours of tedious work on each project no matter how I choose to use it.
Keep up the good work Ken, I enjoy reading your posts our industry needs more people like you.
, Principal Consultant at Phil Woolhouse Hydraulics
Love your work
Laser Plumbing Tamworth.
It is a huge benefit in the design industry so thank you very much for designing and formulating the website.
I for one, greatly appreciate it!
Hydraulic Services Manager at Floth Sustainable Building Consultants
I've really enjoyed using your program at my work at Lambert & Rehbein.
I really like you're program - I've done about 25 large commercial projects using it.
We really relied on it heavily.
Hydraulic Engineer ex Lambert & Rehbein.
Thank you for the website as a resource – it’s outstanding!
BE(Hons), LL.B, MIEAust CPEng NER - IMPARTA Engineers
Thanks for a great site and a very useful tool.
I assist the QBCC with plumbing and roofing issues and find your site to be a great assistance in quickly determining downpipes and gutter sizes.
I am in my second year of subscribing to your site and will be using it for many years to come I am sure.
BT Plumbing Service.