Question

The two most common corrective measure that use external wall spreaders are tie rods and joist/rafter tie plates. A _____

a) To distribute electrical wiring
b) To strengthen the roof structure
c) To correct or prevent sagging
d) To support plumbing systems

Answer 1

Tie rods and joist/rafter tie plates are used to correct or prevent sagging in buildings by reinforcing the structure and stabilizing the load-bearing walls to support the roofing system effectively.

Step-by-step explanation:

The two most common corrective measures that use external wall spreaders are tie rods and joist/rafter tie plates. These devices are employed To correct or prevent sagging of the walls and roof structure in a building. Historically, when the roof span was too large, it could push the supporting walls outward, potentially leading to collapse. To combat this, the load-bearing walls were made stronger to support the roof, but with limited openings like windows or doors to maintain structural integrity. In modern times, tie rods and joist/rafter tie plates reinforce the structure and prevent the outward movement of walls, thus ensuring the building's stability and longevity.