This book offers unique features such ~An Index by Function. This lists, alphabetically, all the terms in each of 23 subject areas. To get information or check your knowledge in any specific field, simply scan the list and look up unfamiliar terms. ~Frequently used formulas, charts, and tables including how to find areas and volumes of commonly used shapes, conversion factors to quickly convert feet to meters, B. T. U.'s to kilowatts, liters to gallons, etc., and standard abbreviations used on plans. ~ An up-to-date Directory of Construction Related Organizations, listing important organizations by 16 subject areas with current addresses. ~ A list of Trade Unions and the various trades they represent.