Now let's advance to our Level 2 piping plan, where precision becomes critical. We'll dimension this sprinkler first to establish the foundation for our entire spacing system. Type DI and measure from this wall to the center of the sprinkler—this reference point will dictate the accuracy of your entire layout.

If your initial dimension differs from mine, don't be concerned—we'll adjust it to specification. Let's create another dimension from this wall, and remember to hit TAB to maintain proper selection protocols. This systematic approach prevents costly revision cycles later in the project.

I'm setting this dimension to precisely 4 feet, 9 inches, while this adjacent dimension will be 4 feet, 4 inches. These measurements align with NFPA spacing requirements for this occupancy type. Now select the entire assembly, including that critical piece of 1-inch pipe—missing this component is a common oversight that can compromise system integrity.

We'll copy this configuration in the specified direction, maintaining our 14-foot spacing. This distance ensures optimal coverage while meeting code requirements for light hazard occupancies. Position your section carefully—accuracy here prevents alignment issues downstream.

Next, I'll select the pipe and utilize Create Similar for consistency. Watch for the dashed alignment line with that sprinkler—this visual cue confirms proper positioning. However, I'm upgrading this to 1½ inches to handle the increased flow demand, and designating it as an outlet for proper hydraulic calculations. Extend this pipe just beyond the sprinkler location to allow for final adjustments.

Transitioning to our Section view reveals our progress, but now we must address the critical connection of our sprigs. In fire protection terminology, "sprigs" refer to the short pipe segments connecting upright sprinklers to the main branch line—proper sprig installation is essential for system performance.

Let's cap this terminal end first, then verify our sprig piping is configured as outlets rather than tees. This distinction is crucial—incorrect fittings will create connection failures when interfacing with the branch line, potentially compromising the entire zone's functionality.

The selection of upright sprinklers for this application stems from the gymnasium's architectural requirements. Without a drop ceiling to conceal pendant sprinklers, uprights provide the necessary protection while maintaining the open ceiling aesthetic. Industry best practice positions these sprinklers 1 to 6 inches below the structural deck for optimal spray pattern distribution.

Now we'll connect these sprigs using a systematic approach. I'll select the branch line and choose Trim/Extend Multiple Elements—this function streamlines the connection process significantly. Each sprig requires only a minimal filler piece, but proper execution ensures watertight connections throughout the system.

With our first branch line complete, we can replicate this configuration across the remaining gymnasium area. This repetitive process demands attention to detail—each branch must maintain identical spacing and connection integrity.

Returning to our piping plan, I'll remove this temporary connection to prepare for the systematic copying process. Select the entire line assembly carefully—missing components will create gaps in coverage. We'll copy at 12-foot intervals, maintaining our established grid pattern. This spacing provides comprehensive coverage while optimizing material usage.

Ensure straight-line alignment as we progress—12, 12, 12. If you overshoot, CTRL + Z provides quick correction. Connect each branch line using the Trim/Extend Multiple Elements function, maintaining consistency with our established methodology.

Let's save our project at this critical juncture—protecting your work prevents costly reconstruction if system issues arise. Now examine our progress in the 3D Fire Sprinkler system view for comprehensive visualization.

The 3D perspective reveals the full scope of our installation. Here's a professional verification technique: hover over any pipe segment and repeatedly press Tab. If your system is properly connected, the entire network will highlight as a unified system—this connectivity check is invaluable for identifying potential isolation issues.

Performing this verification again demonstrates system integrity. Hover without clicking and cycle through Tab selections. The comprehensive highlighting confirms our installation's continuity, though I notice some pre-existing areas may require connection verification.

Our system approaches completion, requiring only final quality checks and strategic sprinkler placement in any remaining coverage gaps. This methodical approach ensures our piping plan meets both code requirements and professional installation standards.