If the duct won't go to the equipment, the equipment will go to the duct.
Seems like it would have been less expensive to set the equipment on the ground and run the duct up the wall than build stands for the equipment. They must have had other reasons to put the equipment up on stands. Flood zone perhaps.
"The bitterness of poor quality remains long after the sweetness of low price is forgotten". --Benjamin Franklin
"Don't argue with an idiot, they will drag you down to their level and beat you with experience". --Mark Twain http://www.campbellmechanical.com
This is stupid. The explanation that I hear from the train drivers, every time they do this, is that the fan in the package unit won't support the extra vertical lift and still maintain the required static pressure. Whatever....
If that is the case, then they need to chose the right equipment for the job.
Just bring in a front end loader and about a dozen semi loads of dirt. OR ... you could just tell the customer that those units are in a un safe condition and need a proper deck and rail around them to be properly serviced. I beleave code actually requires that.
For those of you familiar with Kemah, TX. I worked on these two a few years ago. Pretty common around here. I'd guess about 50% of the houses have access ladders.
I wouldn't have worked on those packages but then again I'm selective.
The picture in my avatar is of the Houston Ship Channel and was taken from my backyard. I like to sit outside and slap mosquitos while watching countless supertankers, barges and cargo ships of every shape and size carry all sorts of deadly toxins to and fro. It's really beautiful at times.....just don't eat the three eyed fish....