What is a needle beam?

What is a needle beam?

• A. An outrigger scaffold
• B. A beam used for load bearing
• C. A type of crane
• D. A tie rod

Answer: (A)

A needle beam is a slender beam that projects from the structure to support a scaffold platform, functioning as an outrigger. It runs out from the building to carry the scaffold deck, allowing the platform to extend beyond the face of the structure and transfer loads to the building through the projecting beam. This setup stabilizes the scaffold and provides a working area around openings or above the ground level without embedding the scaffold directly into the façade. The other options describe different components (a general load-bearing structural beam, a crane, or a tie rod) that don’t serve the purpose of creating an outrigger scaffold like a needle beam does.

A needle beam is a slender beam that projects from the structure to support a scaffold platform, functioning as an outrigger. It runs out from the building to carry the scaffold deck, allowing the platform to extend beyond the face of the structure and transfer loads to the building through the projecting beam. This setup stabilizes the scaffold and provides a working area around openings or above the ground level without embedding the scaffold directly into the façade. The other options describe different components (a general load-bearing structural beam, a crane, or a tie rod) that don’t serve the purpose of creating an outrigger scaffold like a needle beam does.