 |
| |||
| приведённая толщина металла (Mass factor (called also massivity, section factor or HP/A or A/V) is defined as the ratio between the perimeter of the profile exposed to fire and the section of profile.) | |||
| коэффициент поперечного сечения | |||
|
| |||
| приведённая толщина металла (Mass factor (called also massivity, section factor or HP/A or A/V) is defined as the ratio between the perimeter of the profile exposed to fire and the section of profile.) | |||
| коэффициент поперечного сечения | |||
