Compliance with which of the following ensures firestop systems perform effectively?

The correct answer is grounded in the critical importance of following manufacturer installation instructions to ensure the effectiveness of firestop systems. Firestop systems are specifically designed and tested for particular conditions and configurations, and manufacturers provide detailed installation instructions to ensure that these systems function as intended in case of a fire.

These instructions are based on extensive testing and are specifically crafted to address various scenarios involving fire propagation, smoke containment, and structural integrity. When installation instructions are adhered to strictly, they help to maintain the intended fire-resistance rating and ensure that the firestop performs adequately to prevent the spread of fire and smoke through penetrations and joints in walls and floors.

While local building codes are important and must be followed, they may vary by jurisdiction and may not always align directly with the specific requirements of the firestop products. Industry trends and cost management protocols can also play roles in firestop installations, but they do not provide the critical technical details necessary for ensuring proper installation and performance as outlined in manufacturer instructions.