For single-row rack storage of an unencapsulated Class I commodity stored up to 15 ft high without in-rack sprinklers and with 8 ft aisles, a design density of 0.20 gpm/ft² is commonly used as a starting point in accordance with NFPA 13 guidelines for ordinary hazard occupancies.

References: NFPA 13's commodity classification and design criteria for sprinkler systems, providing guidance on design densities based on the type of storage and commodity classification.