I'm unsure of how to approach this project. Tenant is a hand cart manufacturer. They want to do some work in their warehouse which includes adding a new Modela unit (vertical storage lift) and move around some of their racking (high piled storage). Inside the warehouse they store a decent number of rubber tires on pallets or racking (un boxed), which are 12" in diameter (high hazard commodity). The addition of the vertical storage lift requires modifications to the sprinkler system. The building is of Type II construction and is fully sprinklered. They have no specs for the sprinkler system, and I doubt it was designed for storage of high hazard commodities, but they are unaware of when it was installed and under what code. What is an architect's responsibility when it comes to verifying the sprinkler system and what level commodity protection it provides? Liability is compounded by the fact that I am an employee of the contractor that is doing the work so I can't simply write on the drawings that the contractor is responsible for sprinkler system requirements.