Steel and wood supporting formwork can be protected simply and effectively against fire and the danger of failure using gypsum blocks.
For this the blocks are bonded together offset on the fire endangered side of the supports. Up to four-sided cladding is possible.
Wood supporting formwork achieve a fire resistance of F 60-B, structures made from steel up to F 180-A depending on design.
class of the
|S T E E L S U P P O R T S I A W . D I N 1 8 8 0 0 - 1 - 2 1)|
S T E E L S U P P O R T S A S A B O V E, H O W E V E R A S
H O L L O W S E C T I O N F I L L E D W I T H C O N C R E T E 2)
|80 + 60||F 90-A|
|100 + 60||F 120-A|
|80 + 80||F 120-A|
|H O L L O W S U P P O R T S I A W D I N 1 0 5 2 - 1 3)|
1) With C/A < 300m -1 with up to four-sided exposure to fire
2) Or filled with concrete, mortar or bricked up as open section
3) At least sorting class S 10 or MS 10 iaw. DIN 4074-1