Concealed conduits in wall

Becky August 31, 2016

Before staring drop work, lay G.I. wire of 16 gauge in every conduit in the slab upto the concealed box. Keep an extra length of 15 cm.

At the time of wiring, this helps in pulling the wires.

Drop work should commence after the completion of masonry work and satisfactory curing period.

Study the drawings in detail and mark the position of switch boxes with respect to the height from F.F.I.

Do the line out on the wall by colour marking.

Start chasing of the wall with a cutting machine.

Bends in conduit pipes should not be sharp.

Provide thick conduit pipes of the approved quality in the chased portion and tie with the help of binding wires and nails.

Conduit pipe should not project out of the wall. It should be at least 5mm inside the surface of wall.

Provide an inspection box on the wall, at a suitable location.

Fix all the boxes flush to adjacent finished wall, considering the thickness of plaster.

Finish the chased portion with cement mortar. Roughen the surface.

In case of 3 or more conduits, provide a chicken mesh over conduits portion before finishing.

Cover all the boxes with dummy plates to prevent damages during plastering.

Pass G.I. wires of 16 gauge inside the conduits with additional loop length of 15 cm.

The same procedure should be followed for the mains and sub-mains in case of batten/casing capping wiring.

After completion of all plastering work, clean the concealed boxes.