What is the spacing requirement between lines for ordinary hazard if heads are spaced at 13 feet?

In determining the spacing requirement between lines for an ordinary hazard scenario, it is essential to adhere to the guidelines set forth by fire protection standards. When fire sprinkler heads are spaced at 13 feet, the spacing requirement between lines typically follows a specific rule that governs their placement to ensure effective coverage.

According to standard fire protection practices, the maximum spacing between lines when heads are installed at a distance of 13 feet is indeed 10 feet. This requirement ensures that the sprinklers can adequately provide coverage and suppress potential fire hazards within that area, considering factors such as the specific hazard classification and the required density of water application.

The reason the 10-foot spacing is correct is that it aligns with the design criteria established for ordinary hazard occupancies, which aim to minimize the risk of fire spreading while maximizing the effectiveness of the sprinklers. In this case, maintaining a 10-foot distance between lines allows for sufficient overlap of the water distribution patterns from adjacent sprinkler heads, ensuring more effective suppression in the event of a fire.