Answer the questions that come after each, based solely on the information in the passage. If a building is to be left in a safe condition, firefighters must search for hidden fires that may rekindle. Typically this process, known as overhaul, begins in the area of actual fire involvement. Before searching for hidden fires, however, firefighters must first determine the condition of the building. The fire's intensity and the amount of water used to fight the fire are both factors that affect a building. Fire can burn away floor joists and weaken roof trusses. Heat from the fire... Show more Answer the questions that come after each, based solely on the information in the passage. If a building is to be left in a safe condition, firefighters must search for hidden fires that may rekindle. Typically this process, known as overhaul, begins in the area of actual fire involvement. Before searching for hidden fires, however, firefighters must first determine the condition of the building. The fire's intensity and the amount of water used to fight the fire are both factors that affect a building. Fire can burn away floor joists and weaken roof trusses. Heat from the fire can weaken concrete and the mortar in wall joints and elongate steel roof supports. Excess water can add dangerous weight to floors and walls. Once it has been determined that it is safe to enter a building, the process of overhauling begins. A firefighter can often detect hidden fires by looking for discoloration, peeling paint, cracked plaster, and smoke emissions; by feeling walls and floors with the back of the hand; by listening for popping, cracking, and hissing sounds; and by using electronic sensors to detect heat variances. Show less
Answer the questions that come after each, based solely on the information in the passage.
If a building is to be left in a safe condition, firefighters must search for hidden fires that may rekindle. Typically this process, known as overhaul, begins in the area of actual fire involvement. Before searching for hidden fires, however, firefighters must first determine the condition of the building. The fire's intensity and the amount of water used to fight the fire are both factors that affect a building. Fire can burn away floor joists and weaken roof trusses. Heat from the fire can weaken concrete and the mortar in wall joints and elongate steel roof supports. Excess water can add dangerous weight to floors and walls. Once it has been determined that it is safe to enter a building, the process of overhauling begins. A firefighter can often detect hidden fires by looking for discoloration, peeling paint, cracked plaster, and smoke emissions; by feeling walls and floors with the back of the hand; by listening for popping, cracking, and hissing sounds; and by using electronic sensors to detect heat variances.
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