mtlogcabin
SAWHORSE
From the article that you referenced, it is still limited to 400sf.
“Section 16.3.9.6 Nonmetallic pipe listed for light hazard occupancies shall be permitted to be installed in ordinary hazard rooms of otherwise light hazard occupancies where the room does not exceed 400 ft2 (37 m2).”
No, read it again the 400 sq ft limit is for ordinary hazard rooms within a light hazard occupancy
- Ordinary Hazard (Group 1) — This classification applies to spaces in which the combustibility of materials present is low and the quantity is moderate, with no stockpiles of combustible material exceeding 8 feet (2.4 meters). Examples of spaces with this classification might include mechanical plants, laundries, food processing facilities or other manufacturing operations in which a fire would release moderate rates of heat.
- Ordinary Hazard (Group 2) — This classification applies to spaces where the quantity and combustibility of contents are moderate to high, and which may have stockpiles of materials up to 12 feet high (3.7 meters) that could release moderate rates of heat release if ignited. Examples of this occupancy include distilleries, barns and stables, dry cleaners, libraries, machine rooms, and auto repair shops.