Well done!
90mm u-PVC stormwater pipe has 1.9mm thick walls and bends easily. This is claimed to be an advantage as it will deform rather than break but I don't like…

'neath yon tiles exists but a singular path to verity.

The riser would be a 100mm DWV pipe with a 104mm inside diameter and a 110mm outside diameter. This pipe holds 8.5 litres per meter. 1 m/s = 510 lpm.
Do…

Too bad you can't charge rent!

I assume that the tanks are away from the house and there is a considerable length of subsurface pipe. After a dry period, it could take several mm of rain…

Hi Jeremy,
It is certain to be leakage.
After it rains, the downpipes will/should be full of water to the same level as at the elbow's invert at the top of the…

In the unfortunate absence of the necessary BIM data, perhaps you could consider AI.
"It's important to approach such installations with caution and prioritize safety. In terms of terminology, you might…

@ ponzutwo...So true.

Getting rid of unfair contract clauses that penalise owners financially and by adding build days to completion times when they use a private building consultant to do stage inspections is…

Given that the surveyor appears to be reticent to answer questions in writing when requested and the builder's attitude to the issues your private building consultant has raised, it may…

That is why the VBA banned the practice.

In Victoria, the building surveyor has to be appointed by the owner who he then works for, not the builder. Did you appoint him?
Appointment details/requirements can be found on…

The builder's apparent deficiency in quality assurance seems to be mirrored by both his ethical standards and intellectual acumen.

https://www.accc.gov.au/media-release/b ... aw-changes
Text below quoted from the above ACCC media release.
"From 9 November 2023, changes to the Australian Consumer Law will prohibit businesses from proposing,…

I'm wondering whether the run on is caused by a faulty non return valve but it's very hard to diagnose noises by text. Davey service dept are worth a try…

Phone Davey.

Not only builders unfortunately.

I like the slogan. Top points!

Plenty of info on the net.

An industry expert has to certify a Performance Solution as meeting the performance requirements of the NCC before it can be accepted into a contract.

It has to be a certified Performance Solution signed off by an industry expert.

Downpipes are usually shown as nominal positions on the plans.
The downpipe is where it is because there is a spreader discharging a concentrated flow of water from the upper roof…

Vics building need to make sure their private building consultant is well versed in waterproofing requirements.
Persons building should also be aware of any increasingly common "Water Resistant Performance Solutions" entered…

"In Victoria, anyone can call themselves a water proofer. And any tradesperson can do waterproofing works up to the value of $10,000 without proof of compliance with a specific standard."

It is best not to have water falling into the tank from a position where it would stir up the sediment layer near the outlet that supplies the pump if…

Have you thought of mass planting a cascading plant or even a combination of plants? There are many plants in many colours to choose from but Dichondra Silver Falls is…

There is a whole lot more to know than just the answers you seek but they are a good start.
Overflow outlets have a mosquito proof mesh. These are a flow…