Steel!

This mesh has taken longer to put into place than we’d hoped.  It has to be wired together at 400mm intervals, but it’s midday and we’ve only managed to get about a quarter of it done and we’ve not yet started installing the bar chairs.  The building inspection still has to happen today at some point before we can pour tomorrow, so it’s starting to look a bit desperate.

Peter’s going to see if he can call in some help - without it I seriously doubt we’re going to get this thing set up in time for the pour tomorrow.  I part-paid for the concrete this morning too.. $10,000 out the door in one phone call!

Not quite enough

Trench mesh is pretty much done, but it turns out I’ve short-ordered and we don’t have enough.  I think I didn’t take into account the amount of overlap we need.. oops!

We’ll pick up another couple of lengths in Seymour tomorrow, then we can get stuck into the slab mesh.  We’ve already dragged a couple of sheets onto the slab so we know whether or not we’ll need help — these things are SL81 (8mm bar in 100mm squares) and 100kg each so manhandling them into place is hard work, but possible with just the two of us.

So all we really need to do tomorrow is get the mesh into place, wire it together and get the bar chairs under it.  I’m glad now we’ve got the extra day.. I’d originally planned to have the set-up pretty much finished today.

More plastic

Finally the plastic is done, and we’re starting on the trench mesh.

Plastic

Lunchtime, and things are moving along steadily, if not as fast as I’d like.  We still need to try and get some steel laid today, otherwise time is going to run out on us.

This plastic is a bastard to put down, and every time I put a hole in it I’m supposed to patch it up with tape.  Supposed to…

It’s HOT, too.  We’re pretty lucky and have shade until about 10am, but after that it heats up quickly to around the 30º mark.  This black plastic is horrible stuff to work with when it’s hot too.. it won’t do what it’s told and every time I sit down on it I burn my arse!

Australia Day!

It’s Australia Day, and while we’d prefer to have been sitting back on our freshly laid slab enjoying a cold cider and a lamb chop, instead Peter and I got down to work setting up the site for the pour on Saturday, to the tunes on the Hottest 100.  Peter had been onsite most of the week setting up the forms, but we still had the heavy work to do in setting up the steel.

This is what we started with this morning.  All the sand is packed, and nearly all the form work set up.  We still have a little to do around the container and along the cutting wall, but that shouldn’t take long and then we can get into laying the plastic and steel.

Back on track!!!

Peter, our architect and adult supervision found a replacement concreter at short notice, so it’s been full steam ahead getting ready for the pour on the 28th. Still lots to do beforehand, but it’s a short week with Oz Day so I can spend a couple of extra days on site. 

Friday we got started packing the sand on to the pads, to form them up for the concrete. 

 

We got about that far before realising that my trenches were not quite wide or straight enough for the 300-wide reo to fit with the required clearances. So we had to down tools and break out the crow bar, and widen every one of the trenches by hand! I have six blisters on one hand, two on my fingertips… 

But progress was made, and by the end of Saturday it looked like this: 

 

Another day on site today, and the pads are (almost) finished. 

 

 

Formwork gets built tomorrow, the last of the trenches widened and the last (small) pad packed. Then Thursday we lay the steel, with a day up our sleeve as a contingency before the pour on Saturday.

Progress...

Fair bit going on at the moment:

• Trenches are all done.


• Sewer plumbing is in the ground and backfilled.


• Sand for the pads is onsite, reo steel arriving Friday.


• Formwork timber acquired, cheap.

And the best bit - the concreter we had lined up for next week has pulled the pin and now says he can’t do the job until mid March!! Not Happy, Jan. No matter, there are other concreters.. but the schedule is starting to slip a bit now…

Pressure's on

The pressure has been on the past week or two, with the (self-imposed) deadline for the slab pour coming up fast (Friday 20th) in time for a slab-warming on Australia Day. 

Lots more digging… 

 

Most of the ground on this side of the slab is hard packed clay, and the going has been really slow. I’ve had to resort to using the rock breaker along the trench line before hitting it with the backhoe, in order to make any progress. 

In addition to the rib and edge beam trenches, I’ve also had to put in one more for the sewage pipe out to the spot we’ll install the worm farm tank. It was while digging this, that one of the backhoe rams went POP! 

 

I’ve had one ram seal blow out on the backhoe before, but that one I was able to coax back into place and get another hour or two’s digging in. Not so this time, this one was less rubber than plastic, and wasn’t going to play ball. That’s put an end to the weekend’s work and therefore our Oz Day plans!! 

Just to rub salt into the wounds, in my distracted state I also managed to do this to my birthday present…

 

Doesn’t look as bad in the pic as it really is.. Not Happy, Jan! 

Anyway, once I got the ram apart back home, this is what fell out. I’m stunned it actually managed to seal for as long as it did, given the hard work I’ve been putting it through. 

 

One trip out to Dandenong South with the bits and two hours later, and new seals have been acquired. All back together again!

 
 

So I’ll be back on site Thursday night for an early start Friday, to get all the digging finished. And I do mean finished, even if I have to do it by hand!!

More trenches!

The ground here is rock hard, and the bobcat backhoe isn’t all that heavy in earthmoving terms, so I ended up using the rock breaker first to fracture the ground, then the digger to form the trenches. 

 

 

 

I am grateful that I discovered how to side-shift the backhoe attachment though, digging alongside the container and cutting would have been … tricky!

One thing I did discover though was that it’s tricky to recover a skid-steer which is straddling a trench with no way out. It took a 1200x800x10mm steel plate (which I had just lying around…) and some careful manoeuvring, but at least I know now that I can just dig in a straight line and not worry about where I end up.

Trenches, trenches, trenches...

So with the container sorted, it was time to move on to the garage slab trenches. As above, the western perimeter is on fill so the trenches have to be sunk down to firm ground, which is 1800mm on the longest 18m trench. Again, bobcat/backhoe to the rescue.

 

 

It’s surprisingly hard to dig in a straight line, even with paint and string line guiding the way. Not only that, but this backhoe has obviously done some work in its time and has quite a bit of slop, and it tends to dig trenches which lean over on a 10º angle! ”That’s good, they’re keyed into the hillside” was how they were described to me.. that’s optimistic IMHO, but I’ll take it! 

In any case, it got the job done. 

 

The only problem was that the day after I finished the trenches (and took that photo), it rained. A LOT. 

 

The deep trenches ended up with nearly 2 feet of water in them, and the ground got soft enough that in a few places the walls collapsed a little where I’d undermined them when digging up large rocks. This meant that I’ve spent the better part of three days, physically in the trenches with a bucket and shovel cleaning them out, because it would be too risky to get the machine over them without risking a major collapse. Definitely not something I want to do again, I’m still feeling it… 

In the end though we ended up with a pretty good result, and the building inspector was happy which is very important! 

 

So then with the red tape out of the way, we could fill the holes with concrete. This bit happened yesterday. 

 

A total of 20.8m3 of concrete, all just dumped in the ground to make rock. 

 

 

Next, I need to dig the rest of the trenches for the other rib and perimeter trenches, then we can form up and pour the slab. Weather permitting, we’ll be having a slab warming on Australia Day!