An outstanding reference manual. It also covers engineering, facility management and building services. make sure you get the 4th edition, and not the much smaller 3rd edition. Contributors include Henry Cowan, Peter Smith, W.K.Chow, Fergus Fricke, Graham Holland, Warren Julian, David Leifer, Cedric Marsh, Douglas Noble, David Rowe, Steven Szokolay, Ayca Tuzmen, JoseCarlos Damski, Hilaire Graham, Gerard O'Dwyer, Craig Pearce, and Michael Rosenman.