What is the continuous load path in roofing?

What is the continuous load path in roofing?

• A. Membrane → Deck → Insulation → Fasteners/Adhesive → Structural framing.
• B. Membrane → Insulation → Fasteners/Adhesive → Deck → Structural framing.
• C. Membrane → Structural framing → Deck → Insulation → Fasteners/Adhesive.
• D. Deck → Membrane → Insulation → Fasteners/Adhesive → Structural framing.

Answer: (B)

Continuous load path describes how loads start at the roof surface and move through the assembly down to the building structure, ensuring every connection carries the load to the framing. In a roof system where insulation sits between the membrane and the deck and fasteners or adhesive secure the membrane through the insulation into the deck, the uplift or gravity loads on the membrane are first transmitted into the insulation (via the adhesive or through the fastening arrangement). From there, the loads travel through the fasteners or adhesive that pass through the insulation into the deck, and then the deck transfers them to the structural framing. This sequence makes sense because the fasteners must pass through the insulation to reach the deck to anchor and transfer the forces into the building structure, with the deck serving as the immediate substrate that conveys those forces to the framing. Choices that place the deck before the insulation or place the load path in a different order don’t reflect how the materials are actually connected and how uplift is resisted in this type of assembly.

Continuous load path describes how loads start at the roof surface and move through the assembly down to the building structure, ensuring every connection carries the load to the framing. In a roof system where insulation sits between the membrane and the deck and fasteners or adhesive secure the membrane through the insulation into the deck, the uplift or gravity loads on the membrane are first transmitted into the insulation (via the adhesive or through the fastening arrangement). From there, the loads travel through the fasteners or adhesive that pass through the insulation into the deck, and then the deck transfers them to the structural framing. This sequence makes sense because the fasteners must pass through the insulation to reach the deck to anchor and transfer the forces into the building structure, with the deck serving as the immediate substrate that conveys those forces to the framing. Choices that place the deck before the insulation or place the load path in a different order don’t reflect how the materials are actually connected and how uplift is resisted in this type of assembly.