How important is Surface Preparation before concrete footing.

Non-Conformance in work due to Proper compaction not done for Footing PCC.

Footing and ground structure are designed for ground with an assumed or
known ground bearing pressure, If there is a loose spot at the bottom of the excavation, It must be removed. Levels can be made up with crushed stone, sand or sometimes
low strength concrete.

We generally use concrete as blinding to seal and protect the surface of bearing stratum, this also
provides a firm base for erection, shuttering or block wall true to line and level.

And as our site is near to sea it's not worth to ignore proper compaction so we will redo it again
after proper preparation.

Dome form-work for lobby room, the construction of the centering for domes is more complicated than that of most other types of vaults. Formwork could be two way either horizontal or Radial we have a smaller dome and radial formwork will be easier for us in the picture we are making the mainframe with 21mm wooden ply, which will support two layers of ply sheet which are flexible enough to do the maths.

Dome form-work in place, reinforcement work in progress, Once reinforcement work completed a low slump concrete will be used for the casting.

Installation of Electrical conduits in Suspended Slabs

During the inspection, it was observed electrical conduits are installed directly above the form-work ply and not between the two layers of reinforcement this needs a quick fixture to proceed with casting.

Electrical conduit cover to concrete is not proper.