Demographic information on Miscellaneous construction workers, including solar photovoltaic installers, septic tank servicers & sewer pipe cleaners in the US. The workforce of Miscellaneous construction workers, including solar photovoltaic installers, septic tank servicers & sewer pipe cleaners in 2017 was 56,496 people, with 3.46% woman, and 96.5% men. The average age of male Miscellaneous construction workers, including solar photovoltaic installers, septic tank servicers & sewer pipe cleaners in the workforce is 37.5 and of female Miscellaneous construction workers, including solar photovoltaic installers, septic tank servicers & sewer pipe cleaners is 38.1, and the most common race/ethnicity for Miscellaneous construction workers, including solar photovoltaic installers, septic tank servicers & sewer pipe cleaners is White.