On 09/09/2020 20:02, Chris Bacon wrote:
Asked this over at Cormaic's, but no joy (maybe (much!) laterrrr, but
panic on, so here now). This is the slab I've just made with my Aldi
concrete mixer).



Nominal 6000mm by 5000 mm prefab garage for use as garden shed (by my
measurements it will be 6020 by 5035 actualsize).

Slab is 6050 by 5050.

Have I mucked it up and made it too small to use?


The "Plain ConcreteHardstanding" section of (pavingexpert) suggests at
leasat 150mm between edge of slab and garage structure. I've got 15mm,
give or take a couple of mil.



DATA (if required):

ASCII art attempt at floor slab section:

.-------------------//----------------,
|Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* //Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* | 200mm
|Â*Â*Â*Â*Â*Â*Â*Â*Â* --------//--------Â*Â*Â*Â*Â*Â*Â*Â* |
|__________|Â*Â*Â*Â*Â*Â* //Â*Â*Â*Â*Â*Â* |_________|

Â*Â* 600mm

The edges (keels) of the slab are 200mm deep, 600mm wide, all around,
changing to 100+mm in the middle, with A142 mesh.

Corner post weight 100kg, side post weight 70kg, section weight 36kg
each 4 sections per bay so 144kg/bay. 6 bays per side 5 bays for back.

Therefore weight of concrete structure each side is ~1414kg, back is
1160, front will be much less because mostly 4 x side-hinged doors, roof
structure will be angle iron + Sterling board + corrugated iron.
sound