Containing the Work Area
19. When I replace windows, I set up interior vertical containment barriers that extend from floor to ceiling and completely enclose the interior area in which I physically work. If these barriers are set up at a distance less than six feet from the perimeter of the work surface, must I still extend the containment on the floor beyond the vertical barrier to meet the six-foot requirement?
21. My firm removes and replaces windows from the exterior of a building or residence. To contain dust in the work area, we cover the entire interior surface of the window with impermeable plastic sheeting and affix the sheeting to the surrounding interior wall. This creates a pocket, accessible only from the exterior, from which the window is removed and replaced. All removal and replacement work is performed from the exterior, and we still apply the exterior containment measures as provided in the Rule. Does the interior containment method described meet the requirements under the Rule?
23. My firm replaces windows. Various obstacles make it difficult to set up the ten-foot exterior ground containment in a way that would enable our renovators to perform the work and still effectively contain dust. In these cases, we lay the ground containment, but also use vertical containment measures to completely enclose the area in which we work. Is this a permissible method of exterior containment? If the vertical containment is set up at a distance of less than ten feet from the work surface, must we still extend the ground containment beyond the vertical barrier to meet the ten-foot requirement?