Final answer:
The Sagrod is the component that helps in preventing movement in trusses. It is a stiffening member used in frameworks, including trusses. Other components like Turnbuckles, Turnstiles, and Purlins have different functions in construction contexts.
Step-by-step explanation:
The component that helps in preventing or limiting movement in trusses is a Sagrod. A Sagrod is a stiffening member that reduces deformation under load or force in frameworks, including trusses. It is typically a steel rod that supports and keeps the truss in an intended shape and direction, thus preventing structural deformation or collapse.
Conversely, Turnbuckles are devices used to adjust the length or tension of ropes, cables, tie rods, and other tensioning systems, while Turnstiles are form of gate which allows one person to pass at a time, commonly seen in public transport stations or stadiums. Purlins, on the other hand, are horizontal beams used in roof structures to support the load from the roof deck or sheathing.
Therefore, while these other components have vital roles in different construction contexts, it is the Sagrod that specifically aids in controlling movement in a truss, maintaining its strength and stability under load.
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