For the purposes of this chapter, the term "capital improvement" shall mean the cost of (1) erecting, repairing, equipping, remodeling and enlarging school buildings and related facilities, including, but not being limited to, gymnasiums, auditoriums, lunch rooms, vocational training buildings, libraries, teachers' homes, school barns, garages for transportation vehicles, and (2) providing necessary water, lights, heating, air conditioning and sewerage facilities for school buildings. Such term shall not include the cost of the acquisition of land whereon to construct or establish any of the facilities named above.