Is my driveway too steep?

ankittanna · Aug 27, 2024 9:11 pm

Have a look at below image. This represents my idea of the driveway that I want to have.

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I am planning to cover a height of 2.45m in 9m inside my boundary. This diagram is based on maximum permitted gradient for a standard driveway.

Context:
Garage is 2.63m - 0.17m = 2.46m high (2639mm - 170mm = 2469mm)
Gradient outside my lot boundary is 1:6 for 1.42m and 1:4 inside my lot boundary
The distance required to cover the height of 2.46m is 8.9m

Why are we going with 1:4 gradient is that we can have some space behind the garage and don't have to push garage right at the back and have a very long driveway.

I drew this diagram from Brisbane City Council's guide as a reference.

There are provisions for non-standard gradients as well but I am not sure. Has anyone got an idea about non-standard gradients?

Verona · Aug 28, 2024 10:15 pm

It would be beneficial to ring your Council and ask to be put through to their Engineer who would know all about gradients.

ankittanna · Aug 28, 2024 10:22 pm

Yup, I’ve requested for on-site assessment from council.

Verona · Aug 28, 2024 11:06 pm

ankittanna

Yup, I’ve requested for on-site assessment from council.

Also, here's a good link:

https://www.asphalt.com.au/your-guide-t ... standards/

ankittanna · Aug 28, 2024 11:10 pm

Thanks Verona, I’ve Read this one. I got response from council that my calculations are correct. However I have an on-site appointment for assessment of non standard gradients. Assessment costed $252. Hopefully something conclusive comes out of it.

Verona · Aug 28, 2024 11:26 pm

So it will be all verbal discussions? Confirm in writing to them of points discussed. They can't go back on their advice that way. Email is good to send.

ankittanna · Aug 28, 2024 11:28 pm

No. The outcome of the meeting would be a permit provided by council(if they agree) which would be valid for 12 months. If the driveway is not constructed be fore 12 months, the permit needs to be renewed.