Generally the shed slab is non-structural floating slab. Those slabs need control joints at 3.0m maximum spacing or the slab would create ones in the form of cracks. Posts would…

Don’t drill into habitable slab or habitable slab footings as the path and residential habitable slab moves differently. In actual fact you need isolation joint in between the path and…

You would need bigger than those girts you have. The engineer cost shouldn’t be much as they will only design the roof beams and bracing for you. The trusses design…

You would need to run edge roof beams between the steel posts to support the trusses. May be you could use the existing main steel roof beams for that if…

No I’m not in Melbourne.

So there is a perched groundwater layer on site. The report says “The soils encountered on-site could develop a localised perched groundwater during periods of high rainfall”
Perched groundwater commonly occurs…

Make sure the class of the pipe is trafficable and use the minimum and correct fill material around the pipe, otherwise you will need to sleeve it. Local councils sometimes…

Look in the site classification report to see if the geotechnical engineer reported any ground water within the site. If so the design engineer should have taken that into account…

Look in the structural plans for the post base detailed connection.
The cut in the slab needs engineer’s approval as the concrete slab cut and repair will require recommendations/specifications to avoid…

You can concrete pave the area with spoon drain and pavement draining into drainage pits that are connected to legal point of discharge and it’s good idea to waterproof the…

It doesn’t look like its movement cracks or unsuitable substrates. It does however look like something heavy was moving over from one opening to another. The location of cracks on…

This is currently a wrong situation created by your neighbour garage builder who used single skin bricks for retaining soil and not core-filled block wall. Even waterproofing concrete core-filled block…

Have you tried precast concrete panels?

I’m not sure how wide between your building and boundary, but may be you can fit a scissor lift that you can rent or come down from the roof with…

How come that your sumps are located on the highest points of the block and near the building?
Sumps need to be away from buildings to avoid ground movement and buildings…

For engaged piers, you normally reinforce it with central L bars that is casted into footings and threaded at top with angle bracket connection to roof beam if the walls…

Just make sure the top coarse is adequately connected/bonded to the remaining of the wall to avoid splitting at top. You could cast in vertical hawked bars with enough anchorage…

Cracks behaviour is unpredictable if the cause of damage hasn’t been eliminated.

Ground movement cracks can run in any direction, and mostly would be in slab centre. However contraction and expansion cracks follow a straight line pattern where slab needs to crack.…

It seems like ground movement cracks in floating slab. Possible cause; non compliance drainage, trees in close proximity to building or lack of control joints.

Can you include soil logs, site reactivity, type of construction (timber framed, brick veneer, etc..) and site contour plan with slab FFL?

If you are going through the litigation, then you may need an independent professional forensic engineer to document the damage, the cause of damage and repair recommendations.

This is a way too generic question. We need to see the location/alignment of sewer line and footings systems used. In addition to house plans for comparison.

1- you seem to have a serious slab movement problem due to moisture ingress from leaking pipes that caused more likely loss of soil bearing capacity and settlement of footings/supports…

You need to refer back to the structural engineering footings and slab design for edge beams depth. The depth on reactive clay doesn’t necessarily depend only on bearing capacity but…

Yes the DPC needs to be lower than the slab/floor level. The alternative in my opinion is to waterproof the internal wall and slab area below the DPC level (including…

You can fix the joists to bearer with 45 degree and 45 degree acute steel angle brackets.
Check this website
https://www.raptorsupplies.com.au/pd/su ... gLgV_D_BwE

It looks like they have used rigid sealant in the gap. You are supposed to use flexible sealants in filling this gap to allow for expansion and contraction movement between…

In general, a member continuous span means it’s continuous (one whole piece of timber/steel or any material) over at least three supports (two spans). Single span means the member is…

You need to create the required step down. You may achieve that by dropping/modifying the balcony floor joists depending on your floor framing setup.