For which purpose are acetylene and oxygen gases commonly used at construction sites?

Acetylene and oxygen gases are commonly utilized at construction sites specifically for hot work operations. This combination of gases is essential for processes such as welding, cutting, and brazing. The high-temperature flame produced by the burning of acetylene in oxygen allows workers to join metal parts together or cut through materials with precision. Such operations require careful handling and safety precautions due to the intense heat and potential hazards involved. Other uses, like painting or general cleanup, are not typically associated with these gases, as they do not serve the same purposes as heating or cutting.