How much straight length of cable tray is needed for the third floor of the building?

To determine the required straight length of cable tray for the third floor, several factors are typically considered, including the layout of the building, the specific pathways of the trays, and the total distance that needs to be covered to connect equipment, junctions, and other necessary endpoints in the designed system.

In this context, the calculation likely involves taking measurements from architectural plans, accounting for vertical rises, horizontal runs, and any turns or obstructions that must be navigated.

The selection of 220 feet, 10.75 inches indicates a comprehensive approach to measuring and planning, suggesting that this length has been determined to adequately accommodate the necessary pathways without excessive cutting or splicing of cable trays.

The dimensions also point to an understanding of standard installation practices, including allowances for future expansions or adjustments based on the project's needs. This answer further implies that the configurations and building specifications align closely with the standards established in construction documentation, ensuring that the installation is both practical and efficient.

In contrast, the other options would suggest insufficient or excessive lengths that might lead to complications in installation or functionality, thereby reinforcing the importance of accurate measurement in construction planning.