Which construction type is extremely stable and more resistant to collapse due to the effects of fire?

You and your partner are first on the scene of a bleacher collapse at a local raceway. As you exit the ambulance, you note several patients seated throughout the debris from the seats. In this situation, which action would you perform first?

A) Determine the severity of injuries. B) Wait for additional units to arrive. C) Determine the number of patients. D) Notify the local hospitals of a mass-casualty incident.

What are thermosetting polymers?

a. Polymers that soften when exposed to heat but then return to their original shape when cooled b. Polymers that solidify or set irreversibly when they are heated c. Polymers that are not malleable or formable in any manner d. Polymers that spontaneously ignite