Hi guysThanks to those of you who helped me out with a similar question I asked a while back.When plumbing up through penetrations using laser/optical, do you guys fix the plexiglass on the floor above permanently or do you draw round it or something once positioned correctly in order to replace it in the same position when sighting down on it later on for plumbing up to the next floor?Also does the plexiglass technique work when setting out on floor above before slab has been poured.I have done this a long time ago for a couple of floors. And as I remember we just had 4 penetrations and used the plexiglass glass points as resection control.Thanks guys.See More
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