The Assistant Building Custodian Passbook ® prepares you for your test by allowing you to take practice exams in the subjects you need to study. It provides hundreds of questions and answers in the areas that will likely be covered on your upcoming exam, including but not limited to: cleaning procedures and the use of cleaning equipment; safety and security measures; proper supervisory procedures as they relate to custodial work; proper ethical conduct; the general features of low-pressure boilers, basic plumbing, and electrical systems as used in a building; and more.