Notice how the reinforcing mesh placed on top of the bar chairs. The bar chairs are evenly placed on top of the polythene membrane.
Notice how servicing pipes are installed before the concrete slab being constructed.
Pouring the cement evenly to the escavated site. 
A pre-mixed cement truck arrive on site.
Reinforced concrete slab seating on a polythene membrane.
The proppings are screwed onto the concrete slab for a temporary brace stiffening. The line of slots on the bottom of the tilted up panels allow the concrete slabs to join up with the panels, allowing the panels to act as a structural component to support the whole building. When this is done, the propping will be removed.
This photo shows how a tilt up panel is being lift up by a crane.
I found out that the proppings are actually installed during the lifting panels take place.
The steel bars could be allowing other joinings to be installed sometime later during the construction. Also notice the small slots in between each panels, these slots actually allow steel plates wielded to join the tilt panels together.
Tilted up pannels supported by temporary proppings.
