Remodelers Handbook Remodelers Handbook, by Benjamin Williams. Carlsbad, Calif: Craftsman Book Co., 1984. 412 pages. $18.50 paperback. by Paul Hanke The subtitle of Remodelers Handbook is "A manual of professional practice for home improvement contractors," and the author makes a reasonably successful effort to touch all the bases. Despite its handy, two-page chart of space standards for residential design, however, the early chapter on planning is cursory, as is the one on repairs. On the other hand, the chapter devoted to kitchens gives about as much design advice as you could hope to find in a book by someone who is not a professional designer. The author even includes perspective charts and step-by-step instructions for those who want to take