Fireprotection of steel
LOADBEARING STEEL BEAMS AND COLUMNS
The fire resistance requirement for a building is
defined in terms of fire resistance period and stated
in terms of minutes (15, 30, 45, 60, 75, 90, 120, etc.
up to 240 minutes).
This information is usually given in local building regulations and it depends
on the height, occupants and type of the building.
In practice it means that the building frame has to maintain its
load bearing capacity during the fire until everybody has left the burning building.
It is the responsibility of the design engineer, using design codes such as ENV1993-1-2,
to specify the appropriate limiting or failure temperature for a given section.
Different load bearing materials have different
fire resistance periods. These materials are usually
tested by using a standard fire curve which demonstrates
development of a real fire.
The temperature in a standard fire rises rather quickly and then
increases indefinitely. Fire resistance test results are expressed in
terms of time of failure against one or more of three criteria:
• Load bearing capacity (R)
• Integrity (passage of hot gases/fames) (E)
• Insulation (temperature raise on the cold side of
the structural element, usually max. 140 °C) (I)
In some building constructions all of these are
needed but for the steel frames only load bearing
capacity is required e.g. R120.
PAROC FPS 17 has a density of ~170 kg/m3.
The right product for the application will be chosen based on the system
PAROC FPS 17 has ETA approval for fire protection for steel structures.
The product is easy to handle and install for different kinds of fire applications.
This software is designed to help choosing the right thickness of
Fire protection slab PAROC FPS 17. It´s a non-combustible stone wool insulation
for use as fire protection for steel structures, chimneys, doors, furnaces and ovens.
Stone wool insulation has varying fire protection abilities that are largely
dependant on the density of the material as well as the used insulation thickness.
Generally speaking, the higher the density, the longer the fire protection time.