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Eng. B A
44 Posts
Eng. B A
44 Posts
Junior Member

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Eng. B A

Joined 2 June 2024
Junior Member
1 d1 dEng. B AEng. B A posted:
Help - Insufficient fall for sewerage house connection

The recommendation from the soil report may meant >600mm in depth. However this recommendation is for deep dropper vertical pipes in class E (if you have to use one).
My…

2 d2 dEng. B AEng. B A posted:
Help - Insufficient fall for sewerage house connection

Which part of which code that says that?

2 d2 dEng. B AEng. B A posted:
How bad can this waterproofing issue become in future?

From your description, it looks like your outside slab is higher than inside slab. I can’t also see your weep holes.
It’s recommended to lower the outside slab below the inside…

3 d3 dEng. B AEng. B A posted:
Help - Insufficient fall for sewerage house connection

I’m not sure why do you need to lose 400mm going down for swivel and expansion joints. Those joints can be on horizontal level.
You can check this product

4 d4 dEng. B AEng. B A posted:
Nails popping out of eaves

It looks like it’s due to the incorrect spacing for sheet fixings. If the spacing between fixings is smaller than what’s recommended for expansion. Check your Hardie sheets fixings recommendation.…

11 d11 dEng. B AEng. B A posted:
Slab on uncontrolled fill

You do any of the following;
1- replace the 600mm fill with level 1 certified controlled clean fill compacted in 300mm maximum layers to 98% MDD under supervision of the geotechnical…

11 d11 dEng. B AEng. B A posted:
Change approved plans from bored piers to strip footings

Make sure you have the required soil bearing capacity at the shallow founding depth and the strip footings are designed for the expected loads over (including the wind and posts…

  ⋅  1
13 d13 dEng. B AEng. B A posted:
Active or 'stabilised' slab

Seasonal ground movement is normally taken care of during the design of the slab, that is why you see external beams and also sometimes internal beams in the habitable slab.…

13 d13 dEng. B AEng. B A posted:
Active or 'stabilised' slab

Check also the sewer pipes, water mains pressure, any pool pipes, rainwater tank pipes, even aircon disconnected overflow pipes.
Also check if any trees are in close proximity to the building…

14 d14 dEng. B AEng. B A posted:
Active or 'stabilised' slab

Look around the building for non-compliant surface drainage (direction of stormwater toward the building), overflowing roof gutters due to lack of maintenance or inadequate size, inadequate number of downpipes and…

  ⋅  1
15 d15 dEng. B AEng. B A posted:
At what distance from the house is it safe to plant trees?

According to Clause B2.3 of AS2870 - Australian Standard Residential Slabs and Footings, planting of trees should be avoided near the foundation of a building or neighbouring building on reactive…

15 d15 dEng. B AEng. B A posted:
What fall on tiled alfresco?

As mentioned, it’s not recommended to level the outside with inside slab. It’s also recommended to fill any gaps between outside slab and building with flexible sealant to avoid any…

15 d15 dEng. B AEng. B A posted:
Concrete cracking

In my opinion, this is because the posts are built in control joint way. Control joints are normally placed in non-structural floating slab at maximum 3.0m spacing. So if you…

  ⋅  1
15 d15 dEng. B AEng. B A posted:
Timber inside slab!! | Urgent advice needed - Concreting tom

That could be a piece of timber that was mistakenly attached to the formwork.
Any reduction in concrete section is a concern. I would get it checked by a qualified…

15 d15 dEng. B AEng. B A posted:
Concrete cracking

Do you have photos?

16 d16 dEng. B AEng. B A posted:
What to do

I’m not sure if time will cause any issue, however the big obstacle is usually when people don’t have the required inspection certificates. For example form 12 for steel reinforcements…

16 d16 dEng. B AEng. B A posted:
What fall on tiled alfresco?

A gap will direct stormwater under the house foundation which could cause movement and building cracks.
It’s not recommended and it’s non-compliance with building code to have the outside slab level…

16 d16 dEng. B AEng. B A posted:
What fall on tiled alfresco?

I assume you meant 30mm step down from the house slab. If not make sure you have adequate step down to outside area so you don’t get stormwater inside house.
Please…

16 d16 dEng. B AEng. B A posted:
Timber inside slab!! | Urgent advice needed - Concreting tom

I will be worried more about the reduction in beam section and steel cover.

16 d16 dEng. B AEng. B A posted:
What to do

You need to get in touch with a building certifier. You also need to have all design plans, form 15 and inspection forms signed off.

21 d21 dEng. B AEng. B A posted:
Water seepage into garage wall from Neighbour's garden bed

You need to install drainage in the 8 inch area. You can try one of the drainage cells that can go in narrow spaces along your garage wall with Geofabric…

22 d22 dEng. B AEng. B A posted:
Concerning charges from builder for building inspector

In QLD there is form 12 for aspect of work completed inspection certificate and also form 16 for each stage of work inspections. Your builder should supply you and the…

23 d23 dEng. B AEng. B A posted:
Is this carport adequately supported?

It will depend on whoever does the inspection and his pick up to details.

24 d24 dEng. B AEng. B A posted:
Is this carport adequately supported?

It does look like a butt welding. Butt welding is not usually recommended. The correct way to do it is to sleeve both connecting members and weld members to the…

24 d24 dEng. B AEng. B A posted:
Is this carport adequately supported?

It doesn’t look like it is adequately supported. I can’t even see it may be cantilevered over the patio post. If this beam is picking up cross beams, the roof…

26 d26 dEng. B AEng. B A posted:
Garage on boundary line.

My concern is the reduction in concrete footings width and steel cover in the Megaflo setup. I’m not sure why this is required? Generally I don’t like the house wall…

29 d29 dEng. B AEng. B A posted:
Upgrading from N3 to N4 wind rating

It depends on how much load coming on the wall framing. However you can use more top and bottom plates and studs and/or higher timber grade if required to maintain…

30 d30 dEng. B AEng. B A posted:
Upgrading from N3 to N4 wind rating

My apologies, I meant you will be upgrading to 2nd degree cyclonic equivalent.

30 d30 dEng. B AEng. B A posted:
Upgrading from N3 to N4 wind rating

You will be upgrading to first degree cyclonic equivalent. So upgrade to tie downs, connections, member sizes, bracing, wall framing, brick ties, footings size.

1 month1 monthEng. B AEng. B A posted:
Changing roof truss spacing for skylights?

A qualified structural engineer is needed to check the new spacing for the current trusses/roof battens sizes and if required design extra truss each side of the opening and add…

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