Movement Joints in Garage Floor Slab

[benben5555]

Hi Guys, I've got a 6.6m x 6.2m reinforced concrete slab to go down in the garage, on top of the beam and block floor, 100mm thick.

 

To avoid future cracks do I need to include a movement joint? Or a crack control joint? I was thinking about laying in two bays, but that would take more time and cost more. Any thoughts?

[markc]

At 6x6 put it down in one go

[Conor]

If you've mesh it'll be fine.