For what purpose are portable fueled heating devices permitted at construction sites?

Portable fueled heating devices are specifically permitted at construction sites for the purpose of construction-related curing and drying. These devices are essential for maintaining the appropriate temperature and conditions to ensure that construction materials, such as concrete or drywall, cure and dry effectively. Proper curing is crucial for achieving the desired strength and durability of the materials, which directly impacts the safety and integrity of the construction project.

While human comfort may be an important consideration at a job site, it does not align with the primary intended use of these heating devices, which is focused more on the technical aspects of the construction process. General heating is also a broader category that does not capture the specialized need for curing and drying materials. Hence, the most relevant and correct reason for the use of portable fueled heating devices at construction sites is tied directly to construction-related activities.