I feel like everyone is doing social media marketing - or something equally useless while the world around us is breaking down. In the Bay Area, in San Francisco specifically, voters allocated funds to fix or replace every single Bart escalator. The best hope we have for completing this job is 7 years. Yes you read this correctly 7 years. The problem is we do not have enough licensed escalator mechanics to do the wor…
There are 35000 escalators in the US. If a typical escalator needs to be replaced every 35 years, that works out to about 1000 escalator replacements a year.
I can't find offhand any data on this, but I'd expect that most escalator installations are only a few escalators, and so that the demand for about 1000 replacements per year is pretty steady.
Thus, I'd expect that there would be about enough mechanics to handle 1000 per year, without much excess capacity.
BART has 175 escalators. That job is big enough that to do it in one year would take over 17% of the nation's escalator installation capacity. That seems like a job sufficiently out of the ordinary that it is not surprising that it has to be spread over a few years.
I used 35 years lifetime, which I got from the escalators in a manufacturer's brochure I found--it had one that was rated 30 years and one 35-40, so I took 35. But these were heavy duty escalators. Other sources suggested 25 years, or 15-20 years. If you use a lower average life, you get more mechanics needed per year.
Regardless of the lifetime used, I expect that the year to year demand will be pretty steady, and BART's 175 will still represent a very big spike.