Need help please

Can any structural engineers help? Many thanks.

Our DA consent requires driveway barrier rail/structure when exceed 600mm.
The first picture is the design from builder's consulting structural engineer who is very hard to reach and never answered…

Hi Union,
Can I ask when did you get the tender? Is that a recent price?
Thanks.

Many thanks Noname,
You are right, we try to reach the builder but they only provide limited information every time.
It's quite frustrating.

Hi Simeon,
Thanks a lot for your information. It's very useful.
Yes we are having waffle slab with H1 85mm. Now I understand the RL is the final slab level including waffle…

Hi Noname,
I am trying to understand the technical terms here and there but sometimes it's hard to get useful information.
Proposed RL will be the finished floor level FFL, is…

Hi Chris,
Builder did the design and we are trying to amend it before we sign anything.
They don't provide enough advice. Also the sales and tender presenter are the middle man…

Hi Leona33,
Thanks.
Yes I totally agree with you. We don't want to cut too much then end up with too much retaining wall cost and and drainage problem.
Our problem is…

Hi guys, I am at the planning stage of house siting.
The builder advised 0.8m cutting at the rear which will cause retaining wall later.
We want to increase by filling and…