We recently completed fabrication and installation of some hard to reach roof ladders for a customer in northeast Ohio. They were looking to access their upper roof level from their lower roof. Before contacting A-Mezz, if they were on the lower roof and wanted to access the upper roof, they needed to climb back down the roof hatch ladder, walk over to the taller building section and take an elevator to the top floor of that building. They then had to climb back up another ladder through a roof hatch. This was entirely too time consuming and a big efficiency drain.
We arrived on site and after reviewing the site conditions it was decided that an uncaged ladder was the best solution to their roof access problems.
There were a couple of things that we had to work around at the site. The first item we had to work around was that the upper most roof had a parapet wall on top.
According to the ANSI Standard A14.3-2002, the first rung of a climb has to be 14” or less from ground level (floor or roof). As the parapet was over 14” high, a crossover platform was required to allow for rungs on the rear of the parapet.
The second item we had to work around was the row of windows that went around the building. We needed to make sure that the ladder brackets cleared the window span for installation so we made sure to attach directly above and below the windows. The ladder was also painted a brown color to help it blend in with the building, making it less noticeable from the parking lot and street.
The last item we had to work around was the install location. As we were going from one roof to another roof, it was impossible to use lift equipment like scissor lifts and fork lifts to safely get the parapet ladder into place for installation. As the overhead was clear and there was a concrete pad nearby, we brought in a crane for the heavy lifting.
Actual installation time for the parapet crossover ladder was just a couple of hours, but the planning and attention to all the little details on site are what made the process go so smoothly.