Case Type: market sizing; growth, add capacity.
Consulting Firm: ZS Associates 2nd round job interview.
Industry Coverage: manufacturing; automotive, motor vehicles.
Case Interview Question #00317: Our client W.S. Darley & Company is a family owned and operated business in the fire and emergency apparatus manufacturing industry. Headquartered in Itasca, Illinois, the client mainly makes pumps for fire trucks. They offer portables, floating, high-lift booster, CAFS, PTO, engine driven, 
front mount, and midship pumps with flows from 60 to 2500 GPM and pressures to 1200 PSI.
Recently, the client company’s owner and management, the Darley family, wants to know if they should expand their manufacturing capacity for fire truck pumps. They have two specific questions for you, a management consultant hired to advise them: What is the market size for fire trucks in the United States? Should the client W.S. Darley & Company expand their manufacturing capacity or not? And why?
Possible Answers:
1. For the first part of the case (sizing the market for fire trucks), I started by assuming that 10,000 people are served
