Q.: Could you please let us know where we might obtain up-to-date information on expansion joints in concrete buildings?

A.: There is an excellent discussion in Handbook of Concrete Engineering by Mark Fintel (published by Van Nostrand Reinhold), pages 101 to 103. It discusses their purpose, places where they are used, spacings between joints as related to expected temperature range, the need to include them in the preliminary planning stage of design, how they function, factors that affect design, and joint details.