A floor（room）in a building that temporarily protects people from fire and smoke.

Entrance to a staircase/external stairs for evacuation of people or that directly leading to internal and/or external safe places，including storey exit and final exit.

Staircase with a door at its entrance to prevent smoke and heat from entering into it.

Staircase with such facilities as smokeproof vestibule，open balcony or concave corridor（collectively named as"vestibule"）at its entrance，all the doors leading to the vestibule and staircase are fire doors，which prevent smoke and heat from entering into it.

Passageway for people to refuge temporarily and evacuate safely to the outside by providing smoke proof measures and fire partition walls with fire-resistance rating not less than 3.00h on both sides.

Under specified test conditions，the minimum temperature（determined by closed cup method）of a liquid or solid at which vapor gives off near the surface of the liquid or solid to form an ignitable mixture with air，and will flash in the presence of an ignition source.

满足公路路线测量而建立的控制测量网。

Oil products that contain water and can produce thermal wave during combustion.

A spatial separation that prevents a burning building from igniting its adjacent buildings within certain time and facilitates fire-fighting.

Note：The calculation method of fire separation distance shall comply with those specified in Appendix B of the code.

Enclosed space within a building separated from adjoining spaces by fire walls，floors and other constructions having a specified fire resistance.