To control costs when demolition reveals unknown substrate replacement, which specification section should be included?

• A. 01 23 00 - Alternates
• B. 01 60 00 - Product Requirements
• C. 01 22 00 - Unit Prices
• D. 00 50 00 - Contracting Forms and Supplements

Answer: (C)

The key idea is to have a pricing mechanism ready for unforeseen conditions discovered during demolition. Including unit prices in the contract provides pre‑defined rates for specific work and materials, so when unknown substrate must be replaced, the extra work can be priced using those established unit rates. This supports cost control by enabling rapid, quantity-based change orders tied to actual field conditions, rather than relying on uncertain lump-sum estimates. Alternates are evaluated before award to select between design options, not to price post‑demolition discoveries. Product requirements spell out performance criteria, not pricing. Contracting forms cover paperwork, not how changes are priced. So, specifying unit prices directly addresses pricing for unforeseen substitution and helps keep costs in check.