My company, IPS is in design/build industry. We may want to consider Richardson's Estimating books for the following categories: General Construction Mechanical Electrical Plumbing Assembly cost systems Please send us the literature at the following address. Raj Gandhi, P.E. Estimating Manager Integrated Project Services, Inc. 2001 Joshua Road Lafayette Hill, PA 19444 Tel 610-828-4090, Ext. 305 Fax 610-828-3656 Email: rgandhi@ipsdb.com