Garage Update # 3

stiffy · #1 (**permalink**) 10-13-2009, 01:26 AM

PCC,

I had enough problems with my small garage (17m x 9m) the neighbours have been giving me HELL since I moved in,,,, or was it that I asked their daughter out

Either way they are pi$$ing me off.......

STIFFY

Mando · #2 (**permalink**) 10-13-2009, 01:36 AM

Stiffy, keep the photos coming, they're great. What are your neighbors unhappy about? Looks good to me. I'd rather have your garage next to me than a couple of gum trees.

Regards.

Zedn · #3 (**permalink**) 10-13-2009, 03:18 AM

Quote:

6" is fine - 2 layers of mesh?

2 layers for slab on ground? Where would the tensile force on the top fibres come from? Usually that is used for suspended slabs and on ground designs with dodgy founding soil or funky loading. Residential garage slabs are usually only one layer. You must be used to the bigger stuff!

Quote:

One layer of F92 plus the stuff in the footings.

With F92 mesh and 150mm thick that is easily stong enough for your little daytona.. Unless you and Doug are planning on building a semi also?

PCC · #4 (**permalink**) 10-13-2009, 05:13 AM

Stiff,

I did wonder why you had the temp fencing there

Zedn,

Its not unusual to include a 2nd layer of mesh in a 150mm or thicker slab especially if there's no added fibres in the concrete mix.

Yes I am used to the bigger stuff, but similar principles apply.

Stiff,

Good tidy job mate!

Zedn · #5 (**permalink**) 10-13-2009, 05:43 AM

plastic shrinkage cracking should be minimal in a 25mpa slab, especially in Melbourne. You are correct that it is not unusual to include a top layer of steel, but that is typical in suspended applications. Top steel is generally designed as per AS3600 where required in tensile zones that exist due to max moments in the top fibres near walls, columns, piles etc. It is also used sometimes to assist with tying stirrups for shear reinforcement and as you say control cracking due to early age, plastic cracks etc.

Sorry for getting technical, i am a civil engineer with a sub major in rehabilitation of concrete structures. I kind of get excited by concrete

OZCOBRA · #6 (**permalink**) 10-13-2009, 06:21 AM

Quote:

Originally Posted by Zedn

. I kind of get excited by concrete

Very sad!!!

Zedn · #7 (**permalink**) 10-13-2009, 06:34 AM

i know, i need to get a life