PVC Conduit Routing in As Built Drawings

Oops. If no one took measurements and notes, and no one remembers where anyone really put things, you are now in FantasyLand.

You can blow air into each pipe and see where it emerges, or push a wire through if there are no sharp turns. There also might be some sort of ultrasonic device to echolocate and trace the pipes. Good luck!

If all else fails - some people claim to be able to see electric wires in the concrete.

I actually saw it demonstrated one day - After a site meeting we went for a lunch. When we arrived there a worker was preparing to drill a hole in the wall. My friend walked up to him and warned him that he is going to drill right into the conduit.

The worker only laughed and proceeded and of course hit a power cable. (no electricity, no lunch)

How I don't know!!!

GA...

The as builts are just as important , particularly in regard to position of conduits in slabs for the design engineers to issue their final as built load carrying certificate for the slab. I have also seen the engineer condemn a slab on his evaluation of conduits that were not placed to the drawings and had therefore compromised the strength of the slab beyond his design limits.

So have fun if they are already buried in concrete. Remember it will be cheaper to hire a x-ray unit than be saddled with a law suite if things go wrong, let alone the guilt of knowing you are responsible for someone's injuries or death for not doing a simple "As Built" drawing.

Also be aware that slabs ARE often drilled and cut some time in the future when alterations and improvements are made. The engineer setting up the parameters for the cutting will be relying on your As Builts to be able to do the job safely with minimal disruption to the occupants of the building.

Your boss wants it and you feel it a waste of time - let me guess which is correct! İf one of my employees played that game it would be time for him to find new employment.

If you did not do the as built as you installed the conduit then you are in trouble. Do not guess on this ,if your boss wants them it means he was told by a PM to produce them. The best thing you can do is get the slabs X-rayed and produce the as built. This way the liability will be shared by you and the x-ray company if anything does happen down the road. Next time take a few minutes and do them if you need them or not, they are always a good referance later on.

i think that the as built drawing is important as the design and shop drawing while it is express the actual installation which already in the site so it is very helpful in the maintenance operations in the future.

and the shop drawing is will be your reference in the as built and you will only modify on it the new dimensions and the new locations